[Repeater-Builder] Help - TPN1192B PS Doc
I was given a TPN1192B battery charger power supply to fix and then use as a backup supply for our club's repeater. It came with manual 68P81061E50-C MSR 2000 VHF Base and Repeater Stations. In this manual, the power supply instruction section is 68P81062E47-D Option C28AN Battery Charger Power Supply. The problem is that the information in this manual is for the A not the B version. What I'm looking for is information on the B version which has a TRN7404B33 Battery Charger PCB and a TRN5119B Auxiliary Regulator PCB. I searched the RB web site but no joy. Anyone have this information in a PDF file? If not, how about a publication number for a manual that has info on these PCBs? 73 and aloha, Eric KH6CQ
Re: [Repeater-Builder] Help ID'ing this board
On 8/4/2010 12:04 AM, Steve Denbow wrote: Hello Group! I have this board (the one on the RIGHT) in a high band MASTR II station operating as a 2M repeater. The board on the LEFT is out of a sister station, which I have information on. I can not find information on this board (RIGHT) doing a search of the LBI's on the RB site. A Google search only comes up with a MASTR Exec II vehicular repeater, which none of the boards in it resemble this board. It appears to have a preamp built into it, and is part of the receiver IF section, but that's about all I can figure out looking at it. Any help would be appreciated! Thanks in advance! Steve KD8BIW KD8BIW/R 224.580 PL 110.9 Sponsors: KA8GKT, KD8FTR, KD8IYX http://www.kd8biw.com My first thought was a DFE (Dual-Front End), but then I saw the crystal filters, so it is something in the IF region. Noise blanker???
Re: [Repeater-Builder] Help ID'ing this board
Don't know the LBI but the one on the right is the mixer board with noise blanker. Does the same as the one on the left except it has the noise blanker. Normally I have seen these in Lo-VHF stations but were also made for Hi-VHF. David Aug 4, 2010 04:14:25 AM, Repeater-Builder@yahoogroups.com wrote: Hello Group! I have this board (the one on the RIGHT) in a high band MASTR II station operating as a 2M repeater. The board on the LEFT is out of a sister station, which I have information on. I can not find information on this board (RIGHT) doing a search of the LBI's on the RB site. A Google search only comes up with a MASTR Exec II vehicular repeater, which none of the boards in it resemble this board. It appears to have a preamp built into it, and is part of the receiver IF section, but that's about all I can figure out looking at it. Any help would be appreciated! Thanks in advance! Steve KD8BIW KD8BIW/R 224.580 PL 110.9 Sponsors: KA8GKT, KD8FTR, KD8IYX http://www.kd8biw.com
Re: [Repeater-Builder] Help ID'ing this board
I believe it may be this: http://www.repeater-builder.com/ge/lbi-library/lbi-4982c.pdf Chuck WB2EDV - Original Message - From: Steve Denbow To: repeater-builder@yahoogroups.com Sent: Wednesday, August 04, 2010 12:04 AM Subject: [Repeater-Builder] Help ID'ing this board Hello Group! I have this board (the one on the RIGHT) in a high band MASTR II station operating as a 2M repeater. The board on the LEFT is out of a sister station, which I have information on. I can not find information on this board (RIGHT) doing a search of the LBI's on the RB site. A Google search only comes up with a MASTR Exec II vehicular repeater, which none of the boards in it resemble this board. It appears to have a preamp built into it, and is part of the receiver IF section, but that's about all I can figure out looking at it. Any help would be appreciated! Thanks in advance! Steve KD8BIW KD8BIW/R 224.580 PL 110.9 Sponsors: KA8GKT, KD8FTR, KD8IYX http://www.kd8biw.com -- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.851 / Virus Database: 271.1.1/3049 - Release Date: 08/03/10 10:22:00
RE: [Repeater-Builder] Help ID'ing this board
I did a little research last night and all I could come up with was a REMIX NB. It called for LDI-4984. The LBI is nothing like the item shown. A little more research called for LBI-4778 (which I couldn't find) and called it a 138-174 MHz Oscillator Multiplex board. Sorry I could not be of any help. Hey Steve, how is Ashland? Kenneth Cook, W8DZN W8DZN Repeaters in Bucyrus, Ohio Repeaters 147.165 PL88.5 442.525 PL88.5 _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of wd8chl Sent: Wednesday, August 04, 2010 8:56 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Help ID'ing this board On 8/4/2010 12:04 AM, Steve Denbow wrote: Hello Group! I have this board (the one on the RIGHT) in a high band MASTR II station operating as a 2M repeater. The board on the LEFT is out of a sister station, which I have information on. I can not find information on this board (RIGHT) doing a search of the LBI's on the RB site. A Google search only comes up with a MASTR Exec II vehicular repeater, which none of the boards in it resemble this board. It appears to have a preamp built into it, and is part of the receiver IF section, but that's about all I can figure out looking at it. Any help would be appreciated! Thanks in advance! Steve KD8BIW KD8BIW/R 224.580 PL 110.9 Sponsors: KA8GKT, KD8FTR, KD8IYX http://www.kd8biw.com My first thought was a DFE (Dual-Front End), but then I saw the crystal filters, so it is something in the IF region. Noise blanker???
[Repeater-Builder] help and suggestions interference issues
DSTAR is totally foreign to me. I can't think of anyone in the immediate area that even has a DSTAR capable radio. We are experiencing some interference on the input to one of our club repeaters. What baffles me is that the repeater is in PL (123.0). Is it possible that a DSTAR user in a neighboring area is inadvertently transmitting PL and getting into our machine? Also it would GREATLY help if someone had the capability of making me a short .wav clip of what DSTAR sounds like on an analog receiver. Thanks Terry wx3m.te...@gmail.com
Re: [Repeater-Builder] help and suggestions interference issues
If it is in fact D-Star...I would think the most likely cause would be someone analog-ly crossband repeating from a D-Star frequency into your input with the needed ctcss. To my knowledge, no Icom D-Star radio allows for ctcss along with the data as it would corrupt it. It could be done with a hybrid connection between digital and an analog programmed radio however I would say it would be intentionally malicious at that point as ctcss and D-Star do not mix.. Here is a link to an MP3 of what D-Star sounds like on an analog receiver. http://www.w2sjw.com/sounds/D-STAR.mp3 Doug KD8B terry_wx3m wrote: DSTAR is totally foreign to me. I can't think of anyone in the immediate area that even has a DSTAR capable radio. We are experiencing some interference on the input to one of our club repeaters. What baffles me is that the repeater is in PL (123.0). Is it possible that a DSTAR user in a neighboring area is inadvertently transmitting PL and getting into our machine? Also it would GREATLY help if someone had the capability of making me a short .wav clip of what DSTAR sounds like on an analog receiver. Thanks Terry wx3m.te...@gmail.com mailto:wx3m.terry%40gmail.com .
Re: [Repeater-Builder] help and suggestions interference issues
Yes Doug, Sent a recording off list but you have I think hit the nail on the head as am sure CTCSS is not applicable to D-Star as you say. A strong D-Star signal would get into the RX though, despite CTCSS, I think but cannot prove it as no D-Star here. Doug - GM7SVK On 04/07/2010 17:57:16, Doug Bade (k...@thebades.net) wrote: If it is in fact D-Star...I would think the most likely cause would be someone analog-ly crossband repeating from a D-Star frequency into your input with the needed ctcss. To my knowledge, no Icom D-Star radio allows for ctcss along with the data as it would corrupt it. It could be done with a hybrid connection between digital and an analog programmed radio however I would say it would be intentionally malicious at that point as ctcss and D-Star do not mix.. Here is a link to an MP3 of what D-Star sounds like on an analog receiver. http://www.w2sjw.com/sounds/D-STAR.mp3 [link: www.w2sjw.com/sounds/D- STAR.mp3] Doug KD8B terry_wx3m wrote: DSTAR is totally foreign to me. I can't think of anyone in the immediate area that even has a DSTAR capable radio. We are experiencing some interference on the input to one of our club repeaters. What baffles me is that the repeater is in PL (123.0). Is it possible that a DSTAR user in a neighboring area is inadvertently transmitting PL and getting into our machine? Also it would GREATLY help if someone had the capability of making me a short .wav clip of what DSTAR sounds like on an analog receiver. Thanks Terry wx3m.te...@gmail.com [link: mailto:
Re: [Repeater-Builder] help and suggestions interference issues
On 7/4/2010 11:25 AM, terry_wx3m wrote: DSTAR is totally foreign to me. I can't think of anyone in the immediate area that even has a DSTAR capable radio. We are experiencing some interference on the input to one of our club repeaters. What baffles me is that the repeater is in PL (123.0). Is it possible that a DSTAR user in a neighboring area is inadvertently transmitting PL and getting into our machine? Also it would GREATLY help if someone had the capability of making me a short .wav clip of what DSTAR sounds like on an analog receiver. Thanks Terry wx3m.te...@gmail.com mailto:wx3m.terry%40gmail.com DStar doesn't use CTCSS (PL) and even if it did you would not 'hear' anything on an analog radio. If your problem really involves DStar, what /could/ happen is: 1. A DStar signal with enough energy in the 123 hz decoder to trip the radio (not too likely I think.) 2. A mix that involves a DStar radio and an analog radio running CTCSS (what I would bet on.) What makes you think a DStar radio is the interference source? -- mailto:o...@ozindfw.net Oz POB 93167 Southlake, TX 76092 (Near DFW Airport)
RE: [Repeater-Builder] help and suggestions interference issues
Had an issue also with a dstar repeater. Seems that the repeater was co located with another analog repeater and when both transmitters came up I would see and hear the dstar signal on the input of my repeater. The two transmitters were mixing in a filter on the dstar antenna. Operators of the dstar repeater made adjustments to the filter and no longer see or hear the repeater. We are also using pl 123.0 and the dstar signal was keying the transmitter. Not sure why as the other transmitter is using a different pl tone. David From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of terry_wx3m Sent: Sunday, July 04, 2010 11:25 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] help and suggestions interference issues DSTAR is totally foreign to me. I can't think of anyone in the immediate area that even has a DSTAR capable radio. We are experiencing some interference on the input to one of our club repeaters. What baffles me is that the repeater is in PL (123.0). Is it possible that a DSTAR user in a neighboring area is inadvertently transmitting PL and getting into our machine? Also it would GREATLY help if someone had the capability of making me a short .wav clip of what DSTAR sounds like on an analog receiver. Thanks Terry wx3m.te...@gmail.com mailto:wx3m.terry%40gmail.com
[Repeater-Builder] help
hi can any one help on my p210 is not lettig me read it and when i try to prog it keeps saying one channel only apart from the p210 softwere is there any other progame i can try to set it back to 8 channers thanks larry
[Repeater-Builder] Help Identifying a Motorola PA
I was given a PA with a part number TLD2772A. The unit looks to be a rack mount PA with RG142 w/ n connectors for both input and output. The circuit board is unique in that it is ceramic substrate with laser etched film resistors and surface mount parts. The output transistor is a single SRF-4019. Can anyone give me information on this PA? Thanks, Corey
Re: [Repeater-Builder] Help Identifying a Motorola PA
According to my model breakdown sheet its a VHF 144-174 MHz PA. If its like the PAs we have - they would be somewhere in the neighborhood of 105W output power. John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn - Original Message - From: nativeMT To: Repeater-Builder@yahoogroups.com Sent: Wednesday, June 16, 2010 1:58 PM Subject: [Repeater-Builder] Help Identifying a Motorola PA I was given a PA with a part number TLD2772A. The unit looks to be a rack mount PA with RG142 w/ n connectors for both input and output. The circuit board is unique in that it is ceramic substrate with laser etched film resistors and surface mount parts. The output transistor is a single SRF-4019. Can anyone give me information on this PA? Thanks, Corey
[Repeater-Builder] HELP!!!! can anyone help with a CSI-32 firmware bin file
G'day all well i have a dud CSI-32 pannel and i've tracked the problem down to the firmwares 2732a going south - rare i know but... now here is the big ask does anyone have a copy of the firmware bin file so i can burn a eprom to see if this cures my woes? the pannel serial number is R7368 if that help's thanks for reading 73's Mitch
Re: [Repeater-Builder] Help Needed (Guidance and advice) tuning a DB Products Duplexer
Josh, Ed's description for tuning is right on the money. I would try moving the unit just a slight bit to get used to how it tunes before trying to move it over such a wide frequency range. Once you are comfortable with your equipment and how the duplexer tunes, then move it to the new amateur frequency. Milt N3LTQ - Original Message - From: Ed Yoho w6yj_ya...@67hz.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 29, 2010 12:09 AM Subject: Re: [Repeater-Builder] Help Needed (Guidance and advice) tuning a DB Products Duplexer Josh wrote: Ok so here's what I've got (I think) http://www.n2ckh.com/FORSALE/REPEATERS/DUPLEXERS/DB4076/DSC02678.JPG Hamvention special, 4 cavities, appears to be a DB Products 4076 family unit. My bench tools: HP 8924c w/ Spec Analyzer and Tracking Generator. My problem - existing set of cans is tuned for 460~mhz. I need to bring them down to 443/448.It was my understanding that they would have dual adjustments - one for setting the band pass frequency, one for setting the reject frequency. Sounds simple. Except under the 'covers' there is nothing else to adjust... So are they just single frequency pass or notch filters? So thats the first question - The second question is - ok , so if they're just single frequency filters, why can't I spin them 'into the right range' as easily as I thought I'd be able to do I've tuned a couple of motorola micor filters on the spec analyzer in the last couple of days, mostly made sense and was smooth as silk... However, after messing with the first can, I'm confused. Moving the adjustment certainly changes the properties of the notching - but it didnt really move the bandpass around... It mostly changed the shape and depth of the notching - not the frequency. What knowledge am I missing - I'm an amateur :) Yes I've seen the 'how to tune db products duplexor' doc - but it talks about dual controls, which apparently I don't have. Did I buy a piece of junkola? Teach me obie-wan. j Josh, The large nut tipped rods in the center of each cavity are the pass adjustments. Loosen the locking nut at the bottom of each tuning rod and turn the shafts clockwise to set the pass responses where you want. Be sure to keep them set high and low as they are labeled. Once the pass is where you want it, tighten the clamp nuts back down. Then remove the small round covers between the N connectors on each cavity and use a small screwdriver or metal tipped tuning tool to _carefully_ put the notches where they belong. Put the covers back on and enjoy. Be sure to put a termination on the side you are not tuning. Ed Yoho W6YJ Yahoo! Groups Links
Re: [Repeater-Builder] Help Needed (Guidance and advice) tuning a DB Products Duplexer
Hello Josh. Look under the caps between the coax connectors. That should be the notch adjustment. They may not go that low,but all you can do is try. Good luck. Butch, KE7FEL/r On Fri, May 28, 2010 at 6:53 PM, Josh josh.kit...@gmail.com wrote: Ok so here's what I've got (I think) http://www.n2ckh.com/FORSALE/REPEATERS/DUPLEXERS/DB4076/DSC02678.JPG Hamvention special, 4 cavities, appears to be a DB Products 4076 family unit. My bench tools: HP 8924c w/ Spec Analyzer and Tracking Generator. My problem - existing set of cans is tuned for 460~mhz. I need to bring them down to 443/448. It was my understanding that they would have dual adjustments - one for setting the band pass frequency, one for setting the reject frequency. Sounds simple. Except under the 'covers' there is nothing else to adjust... So are they just single frequency pass or notch filters? So thats the first question - The second question is - ok , so if they're just single frequency filters, why can't I spin them 'into the right range' as easily as I thought I'd be able to do I've tuned a couple of motorola micor filters on the spec analyzer in the last couple of days, mostly made sense and was smooth as silk... However, after messing with the first can, I'm confused. Moving the adjustment certainly changes the properties of the notching - but it didnt really move the bandpass around... It mostly changed the shape and depth of the notching - not the frequency. What knowledge am I missing - I'm an amateur :) Yes I've seen the 'how to tune db products duplexor' doc - but it talks about dual controls, which apparently I don't have. Did I buy a piece of junkola? Teach me obie-wan. j
RE: [Repeater-Builder] Help Needed (Guidance and advice) tuning a DB Products Duplexer
Ok so here's what I've got (I think) http://www.n2ckh.com/FORSALE/REPEATERS/DUPLEXERS/DB4076/DSC02678.JPG Hamvention special, 4 cavities, appears to be a DB Products 4076 family unit. My bench tools: HP 8924c w/ Spec Analyzer and Tracking Generator. There was a guy at the Hamvention that had several sets of Decibel four-cavity window filters, selling for $50 each, which, to the untrained eye, would look like an older DB4076. As you said, there would be nothing in the hole where the capacitor would be in a regular DB4076. In essecence, what you have are just plain-jane pass cavities. As a second means of confirming that you do, in fact, have a window filter, is there an antenna tee, or are the four cavities cabled together in cascade? If the latter, then you probably have a window filter. And as a third means of confirming, is there is a label on the front? If not, was there any signs of a label having once been there? If not, then that's yet one more indication that it isn't a DB4076. Decibel made two varieties of pass cavities used in window filters in that era. One had adjustable loops (less common), the other had fixed loops. If your loop connectors have a rectangular chrome plate around them with insertion loss calibration marks, you have the less-common adjustable ones. If you just see four philips-head screws and no chromed plate around the connectors, then yours is not adjustable. If you have the adjustable type, you could probably use them as a pass-only duplexer, but with mediocre isolation, even with the insertion loss cranked up higher than you'd like. If you have the non-adjustable ones, they have very tight coupling, so you're not going to get the isolation you'd need for a repeater. Did I buy a piece of junkola? Teach me obie-wan. Not junk, but maybe not what you were expecting... --- Jeff WN3A
[Repeater-Builder] Help Needed (Guidance and advice) tuning a DB Products Duplexer
Ok so here's what I've got (I think) http://www.n2ckh.com/FORSALE/REPEATERS/DUPLEXERS/DB4076/DSC02678.JPG Hamvention special, 4 cavities, appears to be a DB Products 4076 family unit. My bench tools: HP 8924c w/ Spec Analyzer and Tracking Generator. My problem - existing set of cans is tuned for 460~mhz. I need to bring them down to 443/448.It was my understanding that they would have dual adjustments - one for setting the band pass frequency, one for setting the reject frequency. Sounds simple. Except under the 'covers' there is nothing else to adjust... So are they just single frequency pass or notch filters? So thats the first question - The second question is - ok , so if they're just single frequency filters, why can't I spin them 'into the right range' as easily as I thought I'd be able to do I've tuned a couple of motorola micor filters on the spec analyzer in the last couple of days, mostly made sense and was smooth as silk... However, after messing with the first can, I'm confused. Moving the adjustment certainly changes the properties of the notching - but it didnt really move the bandpass around... It mostly changed the shape and depth of the notching - not the frequency. What knowledge am I missing - I'm an amateur :) Yes I've seen the 'how to tune db products duplexor' doc - but it talks about dual controls, which apparently I don't have. Did I buy a piece of junkola? Teach me obie-wan. j
Re: [Repeater-Builder] Help Needed (Guidance and advice) tuning a DB Products Duplexer
Josh wrote: Ok so here's what I've got (I think) http://www.n2ckh.com/FORSALE/REPEATERS/DUPLEXERS/DB4076/DSC02678.JPG Hamvention special, 4 cavities, appears to be a DB Products 4076 family unit. My bench tools: HP 8924c w/ Spec Analyzer and Tracking Generator. My problem - existing set of cans is tuned for 460~mhz. I need to bring them down to 443/448.It was my understanding that they would have dual adjustments - one for setting the band pass frequency, one for setting the reject frequency. Sounds simple. Except under the 'covers' there is nothing else to adjust... So are they just single frequency pass or notch filters? So thats the first question - The second question is - ok , so if they're just single frequency filters, why can't I spin them 'into the right range' as easily as I thought I'd be able to do I've tuned a couple of motorola micor filters on the spec analyzer in the last couple of days, mostly made sense and was smooth as silk... However, after messing with the first can, I'm confused. Moving the adjustment certainly changes the properties of the notching - but it didnt really move the bandpass around... It mostly changed the shape and depth of the notching - not the frequency. What knowledge am I missing - I'm an amateur :) Yes I've seen the 'how to tune db products duplexor' doc - but it talks about dual controls, which apparently I don't have. Did I buy a piece of junkola? Teach me obie-wan. j Josh, The large nut tipped rods in the center of each cavity are the pass adjustments. Loosen the locking nut at the bottom of each tuning rod and turn the shafts clockwise to set the pass responses where you want. Be sure to keep them set high and low as they are labeled. Once the pass is where you want it, tighten the clamp nuts back down. Then remove the small round covers between the N connectors on each cavity and use a small screwdriver or metal tipped tuning tool to _carefully_ put the notches where they belong. Put the covers back on and enjoy. Be sure to put a termination on the side you are not tuning. Ed Yoho W6YJ
[Repeater-Builder] Help with MASTR EXEC-II, TWO MARC-V; Option/Combo deciphering?
These 3 radios (with a 2m duplexer and a 6-ft cabinet, some misc. other gear, cable and bits) were just donated to KF6RRR for his BSA Venture Crew; we're trying to figure out what they are, and who might be able to use them, and find them a good home, return the Scouts some cash... After some searching at Repeater-Builder.com, I haven't found the right Combo lists yet to decipher them. PCS3, PC05, PC06, PC13, PC18 no joy: 1 MASTR EXECUTIVE II (UNLOCKED) SERIAL: 0385878 SPL SHIP DATE 102 COMBINATION: WVR16HS MOD STATUS * 2 3 * * * * FCC XMTR DATA XT169-A 8 9 10 11 12 13 14 15 16 FCC RCVR DATA ER89-A (UHF Connector on front, extra [rcv?] coax) 1 cable to mate with front, to 12-molex (3x4)+ DC+/-, +BNC-RCA thru pnl. combo# deciphers to: W wall-mount? V 12VDC? (still looking for the right list...) R SPL may mean Special? Oh, joy! 1 6 H S 2 GE MARC V (Wikipedia: 806-869MHz 'scan-based trunking') SERIAL: 0304202 'CLUNK' INSIDE --? (LOCKED) COMBINATION: M2YTL5ZOXX (N Conn on front) FCC XMTR DATA XT-187-A FCC RCVR DATA ER-117-A combo# deciphers to: M 2 Y T L 5 Z O X X SERIAL: 0331391(LOCKED) COMBINATION: M2YTL5M0XX (N Conn on front) FCC XMTR DATA XT-187-A (1 BENT PIN, JONES' PART OF CONNECTOR) FCC RCVR DATA ER-117-A combo# deciphers to: M 2 Y T L 5 M 0 X X As I mentioned, there's more; a 2m set of cans, a cabinet, a case of odd bits, some used heliax and RG-(8?) and 12-conductor square control cable, but knowing what these radios above are would help a buyer figure out what they want, and get some cash to Hal's crew. -- '---O=o=O---' 73, Phil Barnes-Roberts WA6DZS Mailto:pbarnrob at acm dot org Microsoft gives you Windows; Linux gives you the whole house.
RE: [Repeater-Builder] Help with MASTR EXEC-II, TWO MARC-V; Option/Combo deciphering?
I would be interested in the 2-m cans. What are the make and model? And where are they located? John AF4PD -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Philip Barnes-Roberts WA6DZS Sent: Monday, December 07, 2009 12:42 AM To: Repeater-Builder@yahoogroups.com Cc: Dr. Hal Frank KF6RRR Subject: [Repeater-Builder] Help with MASTR EXEC-II, TWO MARC-V; Option/Combo deciphering? These 3 radios (with a 2m duplexer and a 6-ft cabinet, some misc. other gear, cable and bits) were just donated to KF6RRR for his BSA Venture Crew; we're trying to figure out what they are, and who might be able to use them, and find them a good home, return the Scouts some cash... After some searching at Repeater-Builder.com, I haven't found the right Combo lists yet to decipher them. PCS3, PC05, PC06, PC13, PC18 no joy: 1 MASTR EXECUTIVE II (UNLOCKED) SERIAL: 0385878 SPL SHIP DATE 102 COMBINATION: WVR16HS MOD STATUS * 2 3 * * * * FCC XMTR DATA XT169-A 8 9 10 11 12 13 14 15 16 FCC RCVR DATA ER89-A (UHF Connector on front, extra [rcv?] coax) 1 cable to mate with front, to 12-molex (3x4)+ DC+/-, +BNC-RCA thru pnl. combo# deciphers to: W wall-mount? V 12VDC? (still looking for the right list...) R SPL may mean Special? Oh, joy! 1 6 H S 2 GE MARC V (Wikipedia: 806-869MHz 'scan-based trunking') SERIAL: 0304202 'CLUNK' INSIDE --? (LOCKED) COMBINATION: M2YTL5ZOXX (N Conn on front) FCC XMTR DATA XT-187-A FCC RCVR DATA ER-117-A combo# deciphers to: M 2 Y T L 5 Z O X X SERIAL: 0331391(LOCKED) COMBINATION: M2YTL5M0XX (N Conn on front) FCC XMTR DATA XT-187-A (1 BENT PIN, JONES' PART OF CONNECTOR) FCC RCVR DATA ER-117-A combo# deciphers to: M 2 Y T L 5 M 0 X X As I mentioned, there's more; a 2m set of cans, a cabinet, a case of odd bits, some used heliax and RG-(8?) and 12-conductor square control cable, but knowing what these radios above are would help a buyer figure out what they want, and get some cash to Hal's crew. -- '---O=o=O---' 73, Phil Barnes-Roberts WA6DZS Mailto:pbarnrob at acm dot org Microsoft gives you Windows; Linux gives you the whole house. Yahoo! Groups Links __ NOD32 4671 (20091208) Information __ This message was checked by NOD32 antivirus system. http://www.eset.com
[Repeater-Builder] Help Identifying UHF Duplexer
I have a 4 can duplexer that was removed from service. I presently have no use for this item, so I would like to sell it, unfortunately, there are no markings as to its origin. It may be a home brew, but I seem to remember Motorola selling something similar and I believe the model started with a T, but I cannot find any info. If anyone can supply me with some info on this duplexer, I would appreciate the help, and also if anyone is interested, I will accept offers. Pictures of the duplexer may be found in the Photo Section of this group in my album BBFMRF. They are the first 2 pictures labed AA UHFDuplxerFront and AA UHFDuplxerrear FYI The frequency markings on the repeater are correct and the unit should presently be tuned as marked. Replies may be posted to the group or sent directly to me at bbfmrf at yahoo.com Thanks for all your help.
Re: [Repeater-Builder] Help Identifying UHF Duplexer
Motorola T1500-series with the notches, so it is pass-notch as opposed to bandpass. Matthew Kaufman
Re: [Repeater-Builder] Help Identifying UHF Duplexer
Motorola T1504. Just tuned one last weekend and average 81dbm reject with probably 0.1uV pass loss. Good for 250W and 406-512. Lots of good documentation on the Repeater-Builder page: http://www.repeater-builder.com/motorola/t1500.html Good Luck. Bought my last set for around $140. Tony bbfmrf wrote: I have a 4 can duplexer that was removed from service. I presently have no use for this item, so I would like to sell it, unfortunately, there are no markings as to its origin. It may be a home brew, but I seem to remember Motorola selling something similar and I believe the model started with a T, but I cannot find any info. If anyone can supply me with some info on this duplexer, I would appreciate the help, and also if anyone is interested, I will accept offers. Pictures of the duplexer may be found in the Photo Section of this group in my album BBFMRF. They are the first 2 pictures labed AA UHFDuplxerFront and AA UHFDuplxerrear FYI The frequency markings on the repeater are correct and the unit should presently be tuned as marked. Replies may be posted to the group or sent directly to me at bbfmrf at yahoo.com Thanks for all your help.
Re: [Repeater-Builder] Help Identifying UHF Duplexer
At 02:07 PM 10/23/2009, Tony KT9AC wrote: Motorola T1504. Just tuned one last weekend and average 81dbm reject with probably 0.1uV pass loss. Good for 250W and 406-512. Lots of good documentation on the Repeater-Builder page: Last 2 T1504A's I did exceeded 100 dB isolation (typically 108 dB). 81 may be spec but the ones I have certainly exceed that! Ken -- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net We don't just make 'em. We use 'em!
RE: [Repeater-Builder] help icom f121s
-Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Carlos Quinones Sent: Friday, October 09, 2009 8:15 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] help icom f121s need help i have icom f121s for repeater use i have every thing setup use cat controller but i turn on the rx exo to on and turn off the delay timer off but when i check the horn cable i does not do nothing stays to ground no changes of voltage as cor or cos can any one help me please. Carlos, I am not an expert but I don't see that you have received a reply to your request, so let me offer a suggestion. I am using F121S's and F221S's in a repeater application. I believe you have the RX EXO set correctly. I believe that the horn output will either be ground or floating. You will need to use a pull up resister or voltage divider resisters to obtain a COS logic state. Hopefully one of the experts will come onboard and offer a more authoritive answer to your question. If not, let me know. I can suggest someone who will help. Best good luck to you. John AF4PD This message was checked by NOD32 antivirus system. http://www.eset.com
RE: [Repeater-Builder] help icom f121s
thank you John i will be happy for your help no one neve reply my request the controller that i am going to use is the Cat controler but have no luck on it. Carlos wp4mxb On Tue, 2009-10-20 at 21:10 -0400, John Transue wrote: -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Carlos Quinones Sent: Friday, October 09, 2009 8:15 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] help icom f121s need help i have icom f121s for repeater use i have every thing setup use cat controller but i turn on the rx exo to on and turn off the delay timer off but when i check the horn cable i does not do nothing stays to ground no changes of voltage as cor or cos can any one help me please. Carlos, I am not an expert but I don't see that you have received a reply to your request, so let me offer a suggestion. I am using F121S's and F221S's in a repeater application. I believe you have the RX EXO set correctly. I believe that the horn output will either be ground or floating. You will need to use a pull up resister or voltage divider resisters to obtain a COS logic state. Hopefully one of the experts will come onboard and offer a more authoritive answer to your question. If not, let me know. I can suggest someone who will help. Best good luck to you. John AF4PD This message was checked by NOD32 antivirus system. http://www.eset.com
[Repeater-Builder] Help, please.
Greetings all, I joined this group because since earning my license I've wanted to set up a repeater. I think I'm getting close to that now. Let me tell you what I have and what I think I need. I ask that all of you smart, experienced repeater owners would help me along in my path. Please keep in mind, this is my first attempt at a repeater and really am not sure of all of the detail associated with this project. I guess I should start with my operating budget on this project. With a YL, a X-XYL, and a child, I'm not able to go out and buy much new stuff, commerically manufactured stuff, or specailized equipment. I'm am able, though, to read a schematic and am not afraid of a soldering iron/gun. I know that I can't get a 2m frequency so that is out. It would be the easiest since I have a 2m Motorola repeater in my garage that needs to be converted to the Ham band. I have a 440 one too. Again, it was state surplus and needs converted to the Ham bands. It is also Motorola. I only took the repeaters because the price was right. Free (hi hi). I am interested in 6m, but I'm not set on any frequency yet. Which is good. The only repeaters I can find for 6m in the local area are paper ones. At least, I haven't been able to key a repeater up that the ARRL repeater guide says exists with the tones that the guide says are being used. So, I am assuming they are paper repeaters. That said, I have a pair of Midland 70-0351c radios. They have already been converted to the Ham bands and I use them for what little 6m FM work I do. I bought them thinking that I'd like to build the repeater out of them. They seem to be plentiful and cheap. Two great qualities that I was looking for in a radio. I have a repeater controller (actually 3 of them). The one I'm most interested in using didn't come out of a Motorola built repeater. It is actually a generic controller that was given to me (well us as I have 2 other hams my age that are interested in the project, but I'm the most interested so I'm nugging the project along). The controller was bought originally our Elmer, Don Lemley W8DL, to build a 440 repeater out of Motorola mobile units. He had purchased everything and then decided that he didn't want to have interference in his 440 work so he didn't put the project together. I might want to add that the controller that didn't come with a repeater is a black box right now. I put it in a box in the shack and would have to find it again before I could even tell you the make or model of it. I know it is new and hasn't been used. Like I said earlier, there are actually 3 of us that have talked/worked on this idea over the last 4 years. I don't have access to the 440 radios or antenna that was purchased years ago by our Elmer. For an antenna, assuming that I will be on 6m, I was thinking that J-Poles would be fine. I don't expect much use on the repeater other than eventually I'd like to link it with the local clubs nets so that I could at least use 6m myself. 6m isn't real popular in the general area, but I have faith if I build it, they will come. Besides, this project is only being done for my learning and technology advancement in ham radio. So, assuming the radios are up to par, so to speak, I have 2 radios, 2 antennas, a controller, and the feedline. The only major things I am missing are a location, or locations, and/or a set of cans. Now, if I had 2 locations (1 for the transmitter and 1 for the receiver), I know that I wouldn't need the duplexers. I also know those locations should be at least 25 miles apart. I'm thinking that the receiver could go at my house and I'm working on being able to put a transmitter at work which is about 28 miles away. If that happens, the question becomes linking the 2 sites together. I know the traditional way is to use radios. Any suggestions on makes/models? Keep in mind that I like the cheap, readily available, and easy to get into the ham bands. Another thought would be to use Echolink. It would be harder to get that through work's firewall, but has anyone used Echolink that way? Pros/Cons? Another suggestion from a ham that knows quite a bit about networking infrastructure was to use Skype to set up a call between the receiver and the transmitter. Anyone thought of that or, even better, using it? If I go about using Echolink as the linking process, I have 1 rigblaster nomic. I will go about getting another one. I know that something like that would be needed to interface the radios with the workstations that will be running Echolink. If I can't separate the transmitter and receiver, anyone know how to go about getting a set of duplexers? I'm not above trying to build them, but I would be I'd need to be looking at designs that I can find the materials for. I would also need tons of help trying to get them tuned to work correctly for me. By reading over this message, is there any assumptions that I'm missing? Anything you think I need to
Re: [Repeater-Builder] Help, please.
Eric, right off, I'll challenge the assumption that you need 25 miles separation. You'll have too many users who can her the output but not get in, and vice versa. A mile or two should be plenty. Linking via the internet can be done, but making a ham repeater reliant on two internet connections is controversial. Is the transmitter on that Midland capable of 100% duty cycle? Most mobiles are not. 73, Paul, AE4KR - Original Message - From: Eric Mynes To: Repeater-Builder@yahoogroups.com Sent: Friday, October 09, 2009 10:43 PM Subject: [Repeater-Builder] Help, please. Greetings all, I joined this group because since earning my license I've wanted to set up... .
Re: [Repeater-Builder] Help, please.
Eric - Have you been to the Repeater Builder website yet? There are lots of articles there to assist you in learning more. 25 miles separation for 6 meters is way too much, however, I'm not sure what the minimum recommended separation is for a split site. This is somewhat dependant on the radios being used and the front end of the receiver. You will not find too many people familiar with Midland radios - at least for repeater use. There are probably better choices. My favorite is the GE Mastr II, but a GE Exec II or GE MVP will work. They are easier than some of the Motorola's and have a good front end in them. Mobiles are not rated for 100% duty cycle like a Mastr II station is. You can easily burn up a mobile if not careful. Duplexer - good luck finding one. They are not easy to locate unless you purchase new (and you are not going to like the price). You can build a Heliax notch duplexer, but they are not very stable. Been there, done that. I'm running a 4-can duplexer on my 6-meter machine. Expect that you will spend way more money than you'd ever imagine on the project. Even homebrewing and scavenging won't be cheap. And it will be frustrating at times. You won't believe some of the problems that will crop up - but they will. Users? Don't expect too much there. Build and they will come is NOT typical for repeaters. You could have one or two users for years. Then there's test equipment. You'll need some or someone to help you that does have some. You cannot align a receiver without at least a signal generator. An analog VOM is best for alignment of the TX and RX. A good wattmeter and dummy load will also be needed. I don't want to sound negative - just pointing out some things to consider. Hopefully someone else will jump in here and add to my comments. Chuck WB2EDV - Original Message - From: Eric Mynes To: Repeater-Builder@yahoogroups.com Sent: Saturday, October 10, 2009 12:43 AM Subject: [Repeater-Builder] Help, please. Greetings all, I joined this group because since earning my license I've wanted to set up a repeater. I think I'm getting close to that now. Let me tell you what I have and what I think I need. I ask that all of you smart, experienced repeater owners would help me along in my path. Please keep in mind, this is my first attempt at a repeater and really am not sure of all of the detail associated with this project. I guess I should start with my operating budget on this project. With a YL, a X-XYL, and a child, I'm not able to go out and buy much new stuff, commerically manufactured stuff, or specailized equipment. I'm am able, though, to read a schematic and am not afraid of a soldering iron/gun. I know that I can't get a 2m frequency so that is out. It would be the easiest since I have a 2m Motorola repeater in my garage that needs to be converted to the Ham band. I have a 440 one too. Again, it was state surplus and needs converted to the Ham bands. It is also Motorola. I only took the repeaters because the price was right. Free (hi hi). I am interested in 6m, but I'm not set on any frequency yet. Which is good. The only repeaters I can find for 6m in the local area are paper ones. At least, I haven't been able to key a repeater up that the ARRL repeater guide says exists with the tones that the guide says are being used. So, I am assuming they are paper repeaters. That said, I have a pair of Midland 70-0351c radios. They have already been converted to the Ham bands and I use them for what little 6m FM work I do. I bought them thinking that I'd like to build the repeater out of them. They seem to be plentiful and cheap. Two great qualities that I was looking for in a radio. I have a repeater controller (actually 3 of them). The one I'm most interested in using didn't come out of a Motorola built repeater. It is actually a generic controller that was given to me (well us as I have 2 other hams my age that are interested in the project, but I'm the most interested so I'm nugging the project along). The controller was bought originally our Elmer, Don Lemley W8DL, to build a 440 repeater out of Motorola mobile units. He had purchased everything and then decided that he didn't want to have interference in his 440 work so he didn't put the project together. I might want to add that the controller that didn't come with a repeater is a black box right now. I put it in a box in the shack and would have to find it again before I could even tell you the make or model of it. I know it is new and hasn't been used. Like I said earlier, there are actually 3 of us that have talked/worked on this idea over the last 4 years. I don't have access to the 440 radios or antenna that was purchased years ago by our Elmer. For an antenna, assuming that I will be on 6m, I was thinking that J-Poles would be fine. I don't expect much use on the repeater other than
[Repeater-Builder] help icom f121s
need help i have icom f121s for repeater use i have every thing setup use cat controller but i turn on the rx exo to on and turn off the delay timer off but when i check the horn cable i does not do nothing stays to ground no changes of voltage as cor or cos can any one help me please.
[Repeater-Builder] Help IDing a circulator
I don't recognize the logo. http://www.ah6le.net/circulator.jpg Obviously it's a 2 stage one and the label says it's a Model CD-460S with tuned-to freq. of 462.975 mHz. I'm after some spec's on the thing. Ken -- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net We don't just make 'em. We use 'em!
[Repeater-Builder] Help with Vertex vxr7000 on ham bands
Hi Gang Has any one had success in programming a vertex VXR-7000 U in to the Ham band 440-450 Mhz. What soft ware did you use? I have the CE27 that works on my old DOS lap top. It will not let me put in freq. like 446. Mhz. Any help would be appreciated. 73 Dick WB6DNX
[Repeater-Builder] Help specifications or tuning instructions for WP-747L3 / WP-447L1 cavities
Has anyone seen / modified any Wacom Preselector cavities model WP-747L3 / WP-447L1 for use in the 222 / 224 Amateur Band Split? I have purchased a set of these cavities (they are still in the UPS truck) and I was trying to find any tuning information for them. So far all I can find is some very limited description on the Telwave / Wacom sites for model numbers close to these but not exactly the same. WP-447L2SPECIAL Preselector 220-222 WP-747L6TPCP-22612 Preselector, 800 khz BW 220-222 Any specifications or tuning instructions for the WP-747L3 / WP-447L1 cavities or information from anyone that has successfully adapted these cavities as a repeater duplexer in the amateur band would be appreciated. Thank you, Steve - KA1RCI
Re: [Repeater-Builder] Help with a CSI TP 154 Tone Panel
Hi Dick, I have a bunch of these on the air and noted same problem when I used my ICOM U 16 a while back. Check that the *123456* turns on the display. Then do the *123456# and watch closely that each key press shows up on the display. You might have one tone that is not decoded correctly. Try another device and see what happens. I Used a GE PCS and a Motorola GP 68 and they worked fine. I later tried re-tuning the repeater IF stage later on since I knew that radio worked before, and Whala, I had access again on my U16. So seems it might be a sensitivity to the tones that is going on there. I have 5 of my Mastr II stations on the TP-154's, 1 is on the TP-163. My other 2 stations that don't have the PLL exciters are using the CSI Supper 32 and the old TP-38. All of these things have been stable for many years. My First TP-154 I purchased in 1993. Its been on the air ever since. Good luck, BTW I have a Motorola Motrac Repeater I would love to wire up for the TP-154 if I could just get the manual on it. I have had it on the air on GMRS on its single PL of 103.5 for nearly TEN years. Anyone wired one of these up, I am a GE guy and not had much dealing with the Motrac other than when its 10 ton PA gave out. (Its seems to run fine on just the exciter) Regards Richard From: rabre...@sbcglobal.net rabre...@sbcglobal.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, June 27, 2009 9:38:48 PM Subject: [Repeater-Builder] Help with a CSI TP 154 Tone Panel Hi Gang I need some help with a CSI Tone Panel #154. Most of the programming works from the touch tone telephone jack in the back. What I can not get to work is programming over the air. I am using the factory pass word *123456# , I can see the digits on the display when I punch them in from a talkie. It never goes into program mode. It will however put the unit into PL display by pushing *123456* Any answers for my problem Thanks 73 Dick
[Repeater-Builder] Help with a CSI TP 154 Tone Panel
Hi Gang I need some help with a CSI Tone Panel #154. Most of the programming works from the touch tone telephone jack in the back. What I can not get to work is programming over the air. I am using the factory pass word *123456# , I can see the digits on the display when I punch them in from a talkie. It never goes into program mode. It will however put the unit into PL display by pushing *123456* Any answers for my problem Thanks 73 Dick
[Repeater-Builder] Help with Duplexer
I dont usually post on the forum but rcv the emails everyday and follow all posts. I recently purchased a 4 can set of Sinclair Q020G cavities not knowing until I had them tuned and connected to the MSR2000 that they are Bandpass only. Needless to say that desense will not permit the rcv of weak signals at all say 5 miles away. Does anyone know of a good place to acquire a couple of the notch cavities with the cables to go with this set or of a good set of BP/BR cavities at a reasonable price to complete this repeater installation. We are located in South GA and are locating this repeaer on 146.715 mhz. All help is appreciated. Ron/N4SFU
RE: [Repeater-Builder] Help with Duplexer
Ron, If you really have a Q202G (I'm guessing that Q020G was a typo) cavity set, they are not bandpass. What suggests that they are bandpass? The standard Q202G BpBr duplexer has only one loop per can, and a blank plate is installed where a second loop would be. A tiny threaded cap next to each loop connector covers the notch adjustment. Be aware that a Q202G duplexer that was in commercial service will probably have the high-split harness that measures about 12 between the centers of each tee, and will not tune down to the 2m band. The harness drawing is found here: www.repeater-builder.com/sinclair/sinclair-q202-g-cable-harness.pdf 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of n4sfu Sent: Saturday, June 27, 2009 7:13 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Help with Duplexer I dont usually post on the forum but rcv the emails everyday and follow all posts. I recently purchased a 4 can set of Sinclair Q020G cavities not knowing until I had them tuned and connected to the MSR2000 that they are Bandpass only. Needless to say that desense will not permit the rcv of weak signals at all say 5 miles away. Does anyone know of a good place to acquire a couple of the notch cavities with the cables to go with this set or of a good set of BP/BR cavities at a reasonable price to complete this repeater installation. We are located in South GA and are locating this repeaer on 146.715 mhz. All help is appreciated. Ron/N4SFU
Re: [Repeater-Builder] Help with Duplexer
I have a set of sinclair Q202GR and a set of Q202G on 2m and they work great. I wouldn't take anything for them. My company sells a lot or Telewave TPRD-1554 cans, but the sinclairs seem to be much better. My guess is size has a lot to do with it. One of the sinclair sets I have has the trimmer caps for the notch. The other two sets I have are the kinds with the clear plastic rods you slide in and out for the notch. Excellent units! 73 de N5NPO - Original Message - From: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com To: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com Sent: Sat Jun 27 21:29:46 2009 Subject: RE: [Repeater-Builder] Help with Duplexer Ron, If you really have a Q202G (I'm guessing that Q020G was a typo) cavity set, they are not bandpass. What suggests that they are bandpass? The standard Q202G BpBr duplexer has only one loop per can, and a blank plate is installed where a second loop would be. A tiny threaded cap next to each loop connector covers the notch adjustment. Be aware that a Q202G duplexer that was in commercial service will probably have the high-split harness that measures about 12 between the centers of each tee, and will not tune down to the 2m band. The harness drawing is found here: www.repeater-builder.com/sinclair/sinclair-q202-g-cable-harness.pdf 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of n4sfu Sent: Saturday, June 27, 2009 7:13 PM To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: [Repeater-Builder] Help with Duplexer I dont usually post on the forum but rcv the emails everyday and follow all posts. I recently purchased a 4 can set of Sinclair Q020G cavities not knowing until I had them tuned and connected to the MSR2000 that they are Bandpass only. Needless to say that desense will not permit the rcv of weak signals at all say 5 miles away. Does anyone know of a good place to acquire a couple of the notch cavities with the cables to go with this set or of a good set of BP/BR cavities at a reasonable price to complete this repeater installation. We are located in South GA and are locating this repeaer on 146.715 mhz. All help is appreciated. Ron/N4SFU
[Repeater-Builder] Help ID Fan Control Board Kit
Some time ago I purchased a fan control board kit on eBay. Now that I want to put it together, I find that I don't have a schematic or parts list to help me sort out what goes where on the board. The PCB is about 1 1/8 x 2 3/4, and the circuit uses an LM393 dual comparator. I've found a lot of interesting things looking for it on the net, but at this point I'm really hoping that someone will recognize it and bail me out. Jeff W6JK
[Repeater-Builder] Help Identifying Matrix in Mastr II
Hi all, I recently acquired an E case Mastr II VHF mobile with two receivers. Combination EX76KKS66A, KT74-A, ER64-A. It has a number of ICOMS plugged into each receiver, plus several more in the transmitter. Underneath an *extra high* (not flat) top cover is a ~4x6 in. box with several dozen feedthru caps on the side with same number of wires going to a board deep in the case. The number on the box is 19B233115G1. Inside the box are several ICs and a pin matrix with wires plugged onto some of them. I've searched the RB site for any reference to the above numbers with only the KT74 showing but no help. Does anyone have further info on this radio and what the box does? A scanning receiver(s) maybe? Thanks! Laryn K8TVZ
RE: [Repeater-Builder] Help Identifying Matrix in Mastr II
Laryn, The combination number EX76KKS66A is your basic E-case VHF mobile radio, and the part number 19B233115G1 appears to be a box rather than a component. Please advise the frequencies of the ICOMs, along with their positions in the radio. I suspect that you have an IMTS or MTS mobile telephone drawer, but the frequencies will provide valuable information. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Laryn Lohman Sent: Monday, May 25, 2009 8:05 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Help Identifying Matrix in Mastr II Hi all, I recently acquired an E case Mastr II VHF mobile with two receivers. Combination EX76KKS66A, KT74-A, ER64-A. It has a number of ICOMS plugged into each receiver, plus several more in the transmitter. Underneath an *extra high* (not flat) top cover is a ~4x6 in. box with several dozen feedthru caps on the side with same number of wires going to a board deep in the case. The number on the box is 19B233115G1. Inside the box are several ICs and a pin matrix with wires plugged onto some of them. I've searched the RB site for any reference to the above numbers with only the KT74 showing but no help. Does anyone have further info on this radio and what the box does? A scanning receiver(s) maybe? Thanks! Laryn K8TVZ
[Repeater-Builder] Help with power supply
I purchased a Uniden 28 volt power supply today on ebay. It lookes like the Astron LSRM-25A or 35A both front and back (I assume Astron made it). With out seeing it I assume it works OK (cost $2.00 + shipping). Has anyone converted one of these to 12 volts? I have no schematics for it and can not find one on the net. If converted what would be the available current? Charles, NM4V
Re: [Repeater-Builder] Help with power supply
--- On Wed, 5/20/09, Charles Lowery clow...@va.net wrote: From: Charles Lowery clow...@va.net Subject: [Repeater-Builder] Help with power supply To: Repeater-Builder@yahoogroups.com Date: Wednesday, May 20, 2009, 1:27 PM I purchased a Uniden 28 volt power supply today on ebay. It lookes like the Astron LSRM-25A or 35A both front and back (I assume Astron made it). With out seeing it I assume it works OK (cost $2.00 + shipping). Has anyone converted one of these to 12 volts? I have no schematics for it and can not find one on the net. If converted what would be the available current? Charles, NM4V It is usually easy to make a 28 volt suply put out 12 volts if it has the 723 voltage regulator in it. The problem is unless you can change the transformer wiring or whole transformer to put out about half the origional voltage you can only draw about 1/4 the origional current and even at that it will not be very efficiant. You want to put about 3 to 5 volts more into the pass transistors than the output voltage. If you just adjust the resistor values the transistors will have to dissiapate much more heat. Thank of it as you orgionally will have about 32 to 36 volts going to the transistors. That is 4 to 8 volts you have to drop. At 10 amps this is 40 to 80 watts. If you do not lower this voltage and go to 12 volts output then you dissipate about 200 to 240 watts. This will probably be much more than the transistor/heatsink combination can dissipate.
[Repeater-Builder] Help ID'ing component!
Good morning, Was recently given some equipment, formally used for paging systems. Much of it, I know what it is, and whether I can do anything with it! But, I have one component, that band range and purpose has not presented itself! Identification markings: TX RX Systems 89-88-95482 It was in a box with some 450 mhz equipment! Any help would be appreciated! Louis
Re: [Repeater-Builder] Help ID'ing component!
898895482 900 Band, 928-941 MHZ, PRESELECTORS Best Regards, Chris Carruba Co-Admin irc.spidernet.org http://www.spidernet.org CompuTec Data Systems Custom Written Software, Networking, Forensic Data Recovery From: Louis k1...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Sunday, April 5, 2009 10:47:37 AM Subject: [Repeater-Builder] Help ID'ing component! Good morning, Was recently given some equipment, formally used for paging systems. Much of it, I know what it is, and whether I can do anything with it! But, I have one component, that band range and purpose has not presented itself! Identification markings: TX RX Systems 89-88-95482 It was in a box with some 450 mhz equipment! Any help would be appreciated! Louis
RE: [Repeater-Builder] Help ID'ing component!
Louis, My TX-RX catalog provides the following information: 89 = Preselector 88 = 890-960 MHz 95482 = Not listed, probably a custom product 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Louis Sent: Sunday, April 05, 2009 7:48 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Help ID'ing component! Good morning, Was recently given some equipment, formerly used for paging systems. Much of it, I know what it is, and whether I can do anything with it! But, I have one component, that band range and purpose has not presented itself! Identification markings: TX RX Systems 89-88-95482 It was in a box with some 450 MHz equipment! Any help would be appreciated! Louis
[Repeater-Builder] HELP Midland 10 meter Z-273 program
Please I have a 10 meter band midland Radio, I need who can program the Z-273 module. Thanks Carlos Padro wp4mjp 787-379-0062
Re: [Repeater-Builder] HELP Midland 10 meter Z-273 program
I have a Midland Z-273 programmer, how can I help? -Jon - WB0VTM (You can reach me directly at wb0...@earthlink.net ) - Original Message - From: Carlos Padro To: Repeater-Builder@yahoogroups.com Sent: Monday, March 16, 2009 6:16 PM Subject: [Repeater-Builder] HELP Midland 10 meter Z-273 program Please I have a 10 meter band midland Radio, I need who can program the Z-273 module. Thanks Carlos Padro wp4mjp 787-379-0062
[Repeater-Builder] Help with N1274A VHF amplifier please
I have very cheaply acquired a Motorola N1274A amplifier and would like to use it on 2 meters. My first question, is, since this amplifier was originally designed for 150-174MHz do I need to do any retuning. I assume the answer would be yes. On the board, on the far left and the far right I see two components that appear to be tuning capacitors. They are marked Johanson 9612. (Looking them up on the net confirmed they were tuning caps) Are these what I need to adjust? If so, what is the procedure? Tune for max power? Min SWR? Any assistance would be appreciated. Also, what tool is used for this? I kind of looks like a tiny hex head, but I haven't looked at it under a magnifier yet. Secondly, I was wondering if anyone has a schematic for the amplifier. I looked on the net but turned up nothing. There is one component inside the amplifier that appears what used to be a capacitor. It obviously suffered a catastrophic failure and the magic smoke came out quite rapidly. It is located on the board next to a large 1 ohm power resistor. I obviously need to replace this component and could possibly need to replace others. Again, any schematic or parts list info anyone could share with me would be greatly appreciated. Thanks Albert
RE: [Repeater-Builder] Help with N1274A VHF amplifier please
Albert, Yes, you must tune the amplifier for the narrow range of frequencies that you will be using. The N1274A amplifier was used with MT500 and MX300 Converta-Com Consoles to boost the output of the Handie-Talkie in mobile service. The unit has a sensor to detect the transmit signal and switch the amplifier into the circuit, The manual which covers this specific amplifier is 6881020C90- which, unfortunately, is NLA from Motorola Parts. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Albert Sent: Tuesday, March 10, 2009 11:04 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Help with N1274A VHF amplifier please I have very cheaply acquired a Motorola N1274A amplifier and would like to use it on 2 meters. My first question, is, since this amplifier was originally designed for 150-174MHz do I need to do any retuning. I assume the answer would be yes. On the board, on the far left and the far right I see two components that appear to be tuning capacitors. They are marked Johanson 9612. (Looking them up on the net confirmed they were tuning caps) Are these what I need to adjust? If so, what is the procedure? Tune for max power? Min SWR? Any assistance would be appreciated. Also, what tool is used for this? I kind of looks like a tiny hex head, but I haven't looked at it under a magnifier yet. Secondly, I was wondering if anyone has a schematic for the amplifier. I looked on the net but turned up nothing. There is one component inside the amplifier that appears what used to be a capacitor. It obviously suffered a catastrophic failure and the magic smoke came out quite rapidly. It is located on the board next to a large 1 ohm power resistor. I obviously need to replace this component and could possibly need to replace others. Again, any schematic or parts list info anyone could share with me would be greatly appreciated. Thanks Albert
Re: [Repeater-Builder] Help with intermod between repeaters.
wa5luy wrote: Bare with me this is a bit long. Our repeater is on 146.76TX / 146.16RX. In the next town the repeater having the problem is on 147.36TX / 147.96RX. Both repeaters are Motorola Micors. Had the same exact situation with 146.745 and 147.345 years ago. Both MICOR's, not that it matters. It can happen with any repeater spacing that is 600 kiloHertz from one another, and the resulting mix lands on the repeater input. You'll need to install a circulator or isolator on the repeater that is causing the mix. If both repeaters are mixing, then both will need a circulator. This has nothing to do with whether or not the MICOR's were originally built for repeater duty or not. It's a mix that is happening in the repeater PA's. Kevin Custer
[Repeater-Builder] Help with intermod between repeaters.
Bare with me this is a bit long. Our repeater is on 146.76TX / 146.16RX. In the next town the repeater having the problem is on 147.36TX / 147.96RX. Both repeaters are Motorola Micors. Our repeater is a 100 watt PA running about 60watts with a single band pass cavity between TX and a 4 cavity BPBR duplexer connected to 250 feet of 7/8 hard line and a DB224 antenna. The distance between repeaters is about 18 miles line of sight with no obstructions. The other repeater is running a smaller PA driver with an output of 25 watts. I am not sure of the full power capability of this driver. This PA then drives a ¼ KW tube type final set at about 90 watts. This is connected to a 4 cavity BPBR duplexer, 200 feet of ½ hard line, and a DB224 antenna. The problem is when the our repeater 146.76 is in transmit and someone keys the 147.36 repeater a loop condition is set up locking on the 147.36 on until the 146.76 drops. Also audio feedback is heard on the 146.36 repeater. This is typical receiver transmitter intermod. Here is what I have done so for. I checked the 146.76 repeater and there is no signal on it on 147.96 or any other frequency other than 146.76. I then drove to the 146.36 repeater location and from my car in front of the repeater building duplicated the problem by transmitting on 146.76. As we used to say in the phone business, the trouble is leaving here OK. Next I put a calibrated receiver on the TX port of their BPBR duplexer and measured about -50DB when the 146.76 repeater was on. Also I could not squelch out the .76 signal by holding my hands over the antenna of my handheld radio in the building. There is lots of.76 signal down there so I suspect transmitter mixing of the 146.76 with 147.36 in the .36 PA. But where? I disconnected the ¼ KW PA and hooked the driver up directly to the duplexer and the mixing signal on 147.96 is worse. I then put one band pass 147.36, band reject 147. 76 cavity between the PA driver and the duplexer. To my surprise the mixing signal on 147.96 is even higher! I also tried a single band pass cavity with about the same results. Having run out of cavity's I came back home. I realize their PA driver most likely needs to be checked. If the driver PA is ok they will need 30 to 50 DB of isolation between the 147.36 final and the duplexer which will be at least two cavities. I was able to duplicate this mixing with a couple of 2 meter radios, a lossy T connector and a signal generator. I took two high pass cavities out of a duplexer tuning then to pass 147.36 and reject 146.76. I ended up with around 70DB of rejection and 2DB in the pass. I recorded the amount of signal needed to cause the mixing. I then put the cavities between the signal generator and transmitter. To my surprise the amount of signal to start mixing was about the same. The cavities are the type with a T on one port and a compression capacitor for the reject tuning. Some questions I have for the group are: 1. What is the best type of cavity filter to use in this situation and where should it be placed? 2. Has anyone else seen that, been there, done that, and what was your solution? Any information or ideas will be appreciated.
Re: [Repeater-Builder] Help with intermod between repeaters.
You need to reject the opposite TX on each repeater. Your BP filters were set wrong. You rejected the RX on the TX side - something the duplexer should be doing already. You need to install them in the repeater and reject the other TX. IOW, install a filter in the .16 repeater and notch the .36 TX. A good duplexer should do this as well, but many don't. Joe M. On Sat 14/02/09 6:34 PM , wa5luy wa5...@cablelynx.com sent: Bare with me this is a bit long. Our repeater is on 146.76TX / 146.16RX. In the next town the repeater having the problem is on 147.36TX / 147.96RX. Both repeaters are Motorola Micors. Our repeater is a 100 watt PA running about 60watts with a single band pass cavity between TX and a 4 cavity BPBR duplexer connected to 250 feet of 7/8 hard line and a DB224 antenna. The distance between repeaters is about 18 miles line of sight with no obstructions. The other repeater is running a smaller PA driver with an output of 25 watts. I am not sure of the full power capability of this driver. This PA then drives a ¼ KW tube type final set at about 90 watts. This is connected to a 4 cavity BPBR duplexer, 200 feet of ½ hard line, and a DB224 antenna. The problem is when the our repeater 146.76 is in transmit and someone keys the 147.36 repeater a loop condition is set up locking on the 147.36 on until the 146.76 drops. Also audio feedback is heard on the 146.36 repeater. This is typical receiver transmitter intermod. Here is what I have done so for. I checked the 146.76 repeater and there is no signal on it on 147.96 or any other frequency other than 146.76. I then drove to the 146.36 repeater location and from my car in front of the repeater building duplicated the problem by transmitting on 146.76. As we used to say in the phone business, the trouble is leaving here OK. Next I put a calibrated receiver on the TX port of their BPBR duplexer and measured about -50DB when the 146.76 repeater was on. Also I could not squelch out the .76 signal by holding my hands over the antenna of my handheld radio in the building. There is lots of.76 signal down there so I suspect transmitter mixing of the 146.76 with 147.36 in the .36 PA. But where? I disconnected the ¼ KW PA and hooked the driver up directly to the duplexer and the mixing signal on 147.96 is worse. I then put one band pass 147.36, band reject 147. 76 cavity between the PA driver and the duplexer. To my surprise the mixing signal on 147.96 is even higher! I also tried a single band pass cavity with about the same results. Having run out of cavity's I came back home. I realize their PA driver most likely needs to be checked. If the driver PA is ok they will need 30 to 50 DB of isolation between the 147.36 final and the duplexer which will be at least two cavities. I was able to duplicate this mixing with a couple of 2 meter radios, a lossy T connector and a signal generator. I took two high pass cavities out of a duplexer tuning then to pass 147.36 and reject 146.76. I ended up with around 70DB of rejection and 2DB in the pass. I recorded the amount of signal needed to cause the mixing. I then put the cavities between the signal generator and transmitter. To my surprise the amount of signal to start mixing was about the same. The cavities are the type with a T on one port and a compression capacitor for the reject tuning. Some questions I have for the group are: 1. What is the best type of cavity filter to use in this situation and where should it be placed? 2. Has anyone else seen that, been there, done that, and what was your solution? Any information or ideas will be appreciated. Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ Your email settings: Individual Email | Traditional To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join(Yahoo! ID required) To change settings via email: repeater-builder-dig...@yahoogroups.com repeater-builder-fullfeatu...@yahoogroups.com To unsubscribe from this group, send an email to: repeater-builder-unsubscr...@yahoogroups.com Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Help with intermod between repeaters.
The first question that enters my mind is, were both Micor stations originally built as repeaters, with the extra filters and shielding plates, or are one or both base stations that have been converted to repeaters? It is important that the extra shield plates provided with repeater stations are securely in place, with all screws installed. The second question is, are either or both repeaters equipped with ferrite isolators? Thank you for performing some outstanding troubleshooting, and for providing detailed information about your findings! 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of wa5luy Sent: Saturday, February 14, 2009 3:35 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Help with intermod between repeaters. Bear with me this is a bit long. Our repeater is on 146.76TX / 146.16RX. In the next town the repeater having the problem is on 147.36TX / 147.96RX. Both repeaters are Motorola Micors. Our repeater is a 100 watt PA running about 60watts with a single band pass cavity between TX and a 4 cavity BPBR duplexer connected to 250 feet of 7/8 hard line and a DB224 antenna. The distance between repeaters is about 18 miles line of sight with no obstructions. The other repeater is running a smaller PA driver with an output of 25 watts. I am not sure of the full power capability of this driver. This PA then drives a ¼ kW tube type final set at about 90 watts. This is connected to a 4 cavity BPBR duplexer, 200 feet of ½ hard line, and a DB224 antenna. The problem is when the our repeater 146.76 is in transmit and someone keys the 147.36 repeater a loop condition is set up locking on the 147.36 on until the 146.76 drops. Also audio feedback is heard on the 146.36 repeater. This is typical receiver transmitter intermod. Here is what I have done so for. I checked the 146.76 repeater and there is no signal on it on 147.96 or any other frequency other than 146.76. I then drove to the 146.36 repeater location and from my car in front of the repeater building duplicated the problem by transmitting on 146.76. As we used to say in the phone business, the trouble is leaving here OK. Next I put a calibrated receiver on the TX port of their BPBR duplexer and measured about -50dB when the 146.76 repeater was on. Also I could not squelch out the .76 signal by holding my hands over the antenna of my handheld radio in the building. There is lots of .76 signal down there so I suspect transmitter mixing of the 146.76 with 147.36 in the .36 PA. But where? I disconnected the ¼ kW PA and hooked the driver up directly to the duplexer and the mixing signal on 147.96 is worse. I then put one band pass 147.36, band reject 147. 76 cavity between the PA driver and the duplexer. To my surprise the mixing signal on 147.96 is even higher! I also tried a single band pass cavity with about the same results. Having run out of cavities, I came back home. I realize their PA driver most likely needs to be checked. If the driver PA is ok they will need 30 to 50 dB of isolation between the 147.36 final and the duplexer which will be at least two cavities. I was able to duplicate this mixing with a couple of 2 meter radios, a lossy T connector and a signal generator. I took two high pass cavities out of a duplexer tuning then to pass 147.36 and reject 146.76. I ended up with around 70 dB of rejection and 2 dB in the pass. I recorded the amount of signal needed to cause the mixing. I then put the cavities between the signal generator and transmitter. To my surprise the amount of signal to start mixing was about the same. The cavities are the type with a T on one port and a compression capacitor for the reject tuning. Some questions I have for the group are: 1. What is the best type of cavity filter to use in this situation and where should it be placed? 2. Has anyone else seen that, been there, done that, and what was your solution? Any information or ideas will be appreciated.
Re: [Repeater-Builder] Help with intermod between repeaters.
I hate to tell you, a definite way to eliminate the problem, is a frequency change so that the output of the two transmitters are no longer not 600 khz apart. It is possible that the mixing is occurring in one of the PA's. If the problem is a mix in the TX, an isolator on the offending TX should solve it. I like the Sinclair isolators. 2A-B Most likely a 3rd order intermod product 146.76 X 2 = 293.52 293.52 - 147.36 = 146.16 Bad place for it to end up on. I have run into this problem several times. Telco : I think you meant to say, the trouble must be on your end, it is leaving here ok... I can't use that excuse, my SXS office does not talk to the outside world yet... Good Luck John At 06:34 PM 2/14/2009, you wrote: Bare with me this is a bit long. Our repeater is on 146.76TX / 146.16RX. In the next town the repeater having the problem is on 147.36TX / 147.96RX. Both repeaters are Motorola Micors. Our repeater is a 100 watt PA running about 60watts with a single band pass cavity between TX and a 4 cavity BPBR duplexer connected to 250 feet of 7/8 hard line and a DB224 antenna. The distance between repeaters is about 18 miles line of sight with no obstructions. The other repeater is running a smaller PA driver with an output of 25 watts. I am not sure of the full power capability of this driver. This PA then drives a ¼ KW tube type final set at about 90 watts. This is connected to a 4 cavity BPBR duplexer, 200 feet of ½ hard line, and a DB224 antenna. The problem is when the our repeater 146.76 is in transmit and someone keys the 147.36 repeater a loop condition is set up locking on the 147.36 on until the 146.76 drops. Also audio feedback is heard on the 146.36 repeater. This is typical receiver transmitter intermod. Here is what I have done so for. I checked the 146.76 repeater and there is no signal on it on 147.96 or any other frequency other than 146.76. I then drove to the 146.36 repeater location and from my car in front of the repeater building duplicated the problem by transmitting on 146.76. As we used to say in the phone business, the trouble is leaving here OK. Next I put a calibrated receiver on the TX port of their BPBR duplexer and measured about -50DB when the 146.76 repeater was on. Also I could not squelch out the .76 signal by holding my hands over the antenna of my handheld radio in the building. There is lots of.76 signal down there so I suspect transmitter mixing of the 146.76 with 147.36 in the .36 PA. But where? I disconnected the ¼ KW PA and hooked the driver up directly to the duplexer and the mixing signal on 147.96 is worse. I then put one band pass 147.36, band reject 147. 76 cavity between the PA driver and the duplexer. To my surprise the mixing signal on 147.96 is even higher! I also tried a single band pass cavity with about the same results. Having run out of cavity's I came back home. I realize their PA driver most likely needs to be checked. If the driver PA is ok they will need 30 to 50 DB of isolation between the 147.36 final and the duplexer which will be at least two cavities. I was able to duplicate this mixing with a couple of 2 meter radios, a lossy T connector and a signal generator. I took two high pass cavities out of a duplexer tuning then to pass 147.36 and reject 146.76. I ended up with around 70DB of rejection and 2DB in the pass. I recorded the amount of signal needed to cause the mixing. I then put the cavities between the signal generator and transmitter. To my surprise the amount of signal to start mixing was about the same. The cavities are the type with a T on one port and a compression capacitor for the reject tuning. Some questions I have for the group are: 1. What is the best type of cavity filter to use in this situation and where should it be placed? 2. Has anyone else seen that, been there, done that, and what was your solution? Any information or ideas will be appreciated. Yahoo! Groups Links
RE: [Repeater-Builder] Help with intermod between repeaters.
We had same problem with 146.940/340 and 146.640/040 few years ago, ( distance between repeaters same as yours); tried as many situations as you mentioned, we ended in using in our repeater 146.940 two separated antennas, one for RX and other for TX and the duplexer, a WP-629 used just as filters, this solved the problem 100%. Juan Tellez, XE2SI From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of John Sichert Sent: Saturday, February 14, 2009 5:13 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Help with intermod between repeaters. I hate to tell you, a definite way to eliminate the problem, is a frequency change so that the output of the two transmitters are no longer not 600 khz apart. It is possible that the mixing is occurring in one of the PA's. If the problem is a mix in the TX, an isolator on the offending TX should solve it. I like the Sinclair isolators. 2A-B Most likely a 3rd order intermod product 146.76 X 2 = 293.52 293.52 - 147.36 = 146.16 Bad place for it to end up on. I have run into this problem several times. Telco : I think you meant to say, the trouble must be on your end, it is leaving here ok... I can't use that excuse, my SXS office does not talk to the outside world yet... Good Luck John At 06:34 PM 2/14/2009, you wrote: Bare with me this is a bit long. Our repeater is on 146.76TX / 146.16RX. In the next town the repeater having the problem is on 147.36TX / 147.96RX. Both repeaters are Motorola Micors. Our repeater is a 100 watt PA running about 60watts with a single band pass cavity between TX and a 4 cavity BPBR duplexer connected to 250 feet of 7/8 hard line and a DB224 antenna. The distance between repeaters is about 18 miles line of sight with no obstructions. The other repeater is running a smaller PA driver with an output of 25 watts. I am not sure of the full power capability of this driver. This PA then drives a ¼ KW tube type final set at about 90 watts. This is connected to a 4 cavity BPBR duplexer, 200 feet of ½ hard line, and a DB224 antenna. The problem is when the our repeater 146.76 is in transmit and someone keys the 147.36 repeater a loop condition is set up locking on the 147.36 on until the 146.76 drops. Also audio feedback is heard on the 146.36 repeater. This is typical receiver transmitter intermod. Here is what I have done so for. I checked the 146.76 repeater and there is no signal on it on 147.96 or any other frequency other than 146.76. I then drove to the 146.36 repeater location and from my car in front of the repeater building duplicated the problem by transmitting on 146.76. As we used to say in the phone business, the trouble is leaving here OK. Next I put a calibrated receiver on the TX port of their BPBR duplexer and measured about -50DB when the 146.76 repeater was on. Also I could not squelch out the .76 signal by holding my hands over the antenna of my handheld radio in the building. There is lots of.76 signal down there so I suspect transmitter mixing of the 146.76 with 147.36 in the .36 PA. But where? I disconnected the ¼ KW PA and hooked the driver up directly to the duplexer and the mixing signal on 147.96 is worse. I then put one band pass 147.36, band reject 147. 76 cavity between the PA driver and the duplexer. To my surprise the mixing signal on 147.96 is even higher! I also tried a single band pass cavity with about the same results. Having run out of cavity's I came back home. I realize their PA driver most likely needs to be checked. If the driver PA is ok they will need 30 to 50 DB of isolation between the 147.36 final and the duplexer which will be at least two cavities. I was able to duplicate this mixing with a couple of 2 meter radios, a lossy T connector and a signal generator. I took two high pass cavities out of a duplexer tuning then to pass 147.36 and reject 146.76. I ended up with around 70DB of rejection and 2DB in the pass. I recorded the amount of signal needed to cause the mixing. I then put the cavities between the signal generator and transmitter. To my surprise the amount of signal to start mixing was about the same. The cavities are the type with a T on one port and a compression capacitor for the reject tuning. Some questions I have for the group are: 1. What is the best type of cavity filter to use in this situation and where should it be placed? 2. Has anyone else seen that, been there, done that, and what was your solution? Any information or ideas will be appreciated. Yahoo! Groups Links __ Información de ESET Smart Security, versión de la base de firmas de virus 3846 (20090211) __ ESET Smart Security ha comprobado este mensaje. http://www.eset.com
Re: [Repeater-Builder] Help with intermod between repeaters.
There used to be a couple of high power paging transmitters in town 600 KHz apart in the 152 MHz range that used to raise hell with several ham repeaters, glad they are gone now. tom [Original Message] From: John Snitcher jo...@sxsco.com To: Repeater-Builder@yahoogroups.com Date: 2/14/2009 8:05:38 PM Subject: Re: [Repeater-Builder] Help with intermod between repeaters. I hate to tell you, a definite way to eliminate the problem, is a frequency change so that the output of the two transmitters are no longer not 600 khz apart. It is possible that the mixing is occurring in one of the PA's. If the problem is a mix in the TX, an isolator on the offending TX should solve it. I like the Sinclair isolators. 2A-B Most likely a 3rd order intermod product 146.76 X 2 = 293.52 293.52 - 147.36 = 146.16 Bad place for it to end up on. I have run into this problem several times. Telco : I think you meant to say, the trouble must be on your end, it is leaving here ok... I can't use that excuse, my SXS office does not talk to the outside world yet... Good Luck John At 06:34 PM 2/14/2009, you wrote: Bare with me this is a bit long. Our repeater is on 146.76TX / 146.16RX. In the next town the repeater having the problem is on 147.36TX / 147.96RX. Both repeaters are Motorola Micors. Our repeater is a 100 watt PA running about 60watts with a single band pass cavity between TX and a 4 cavity BPBR duplexer connected to 250 feet of 7/8 hard line and a DB224 antenna. The distance between repeaters is about 18 miles line of sight with no obstructions. The other repeater is running a smaller PA driver with an output of 25 watts. I am not sure of the full power capability of this driver. This PA then drives a ¼ KW tube type final set at about 90 watts. This is connected to a 4 cavity BPBR duplexer, 200 feet of ½ hard line, and a DB224 antenna. The problem is when the our repeater 146.76 is in transmit and someone keys the 147.36 repeater a loop condition is set up locking on the 147.36 on until the 146.76 drops. Also audio feedback is heard on the 146.36 repeater. This is typical receiver transmitter intermod. Here is what I have done so for. I checked the 146.76 repeater and there is no signal on it on 147.96 or any other frequency other than 146.76. I then drove to the 146.36 repeater location and from my car in front of the repeater building duplicated the problem by transmitting on 146.76. As we used to say in the phone business, the trouble is leaving here OK. Next I put a calibrated receiver on the TX port of their BPBR duplexer and measured about -50DB when the 146.76 repeater was on. Also I could not squelch out the .76 signal by holding my hands over the antenna of my handheld radio in the building. There is lots of.76 signal down there so I suspect transmitter mixing of the 146.76 with 147.36 in the .36 PA. But where? I disconnected the ¼ KW PA and hooked the driver up directly to the duplexer and the mixing signal on 147.96 is worse. I then put one band pass 147.36, band reject 147. 76 cavity between the PA driver and the duplexer. To my surprise the mixing signal on 147.96 is even higher! I also tried a single band pass cavity with about the same results. Having run out of cavity's I came back home. I realize their PA driver most likely needs to be checked. If the driver PA is ok they will need 30 to 50 DB of isolation between the 147.36 final and the duplexer which will be at least two cavities. I was able to duplicate this mixing with a couple of 2 meter radios, a lossy T connector and a signal generator. I took two high pass cavities out of a duplexer tuning then to pass 147.36 and reject 146.76. I ended up with around 70DB of rejection and 2DB in the pass. I recorded the amount of signal needed to cause the mixing. I then put the cavities between the signal generator and transmitter. To my surprise the amount of signal to start mixing was about the same. The cavities are the type with a T on one port and a compression capacitor for the reject tuning. Some questions I have for the group are: 1. What is the best type of cavity filter to use in this situation and where should it be placed? 2. Has anyone else seen that, been there, done that, and what was your solution? Any information or ideas will be appreciated. Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * Your email settings: Individual Email | Traditional * To change settings online go to: http://groups.yahoo.com/group/Repeater-Builder/join (Yahoo! ID required) * To change settings via email: mailto:repeater-builder-dig...@yahoogroups.com mailto:repeater-builder-fullfeatu
Re: [Repeater-Builder] Help with intermod between repeaters.
We have a similar problem in the Twin Cities in Minnesota where we have two AM broadcasting stations that are 600 Khz apart. One is a 50,000 watt station on 1500 Khz and the other is a 10,000 watt station on 900 Khz. They are located about 5 miles apart. qs both stations are on-the-air 24 hours per day the 600 Khz signal is constantly on. Ever tried to build a filter for 1500 or 900 Khz to notch them out ? We have found (and located) this 600 Khz carrier on the high voltage power lines (500,000 V) that run close (within 1/2 mile) to the 50,000 watt station. You can hear the 600 Khz signal (with audio from both stations) from the stations on a AM car radio within 10 miles all along the power lines.. We have had to go to split site 2 meter repeaters within 15 mile radius of the two stations. Paul K0LAV - Original Message - From: Thomas Oliver tsoli...@tir.com To: Repeater-Builder@yahoogroups.com Sent: Saturday, February 14, 2009 7:34:55 PM GMT -06:00 US/Canada Central Subject: Re: [Repeater-Builder] Help with intermod between repeaters. There used to be a couple of high power paging transmitters in town 600 KHz apart in the 152 MHz range that used to raise hell with several ham repeaters, glad they are gone now. tom [Original Message] From: John Snitcher jo...@sxsco.com To: Repeater-Builder@yahoogroups.com Date: 2/14/2009 8:05:38 PM Subject: Re: [Repeater-Builder] Help with intermod between repeaters. I hate to tell you, a definite way to eliminate the problem, is a frequency change so that the output of the two transmitters are no longer not 600 khz apart. It is possible that the mixing is occurring in one of the PA's. If the problem is a mix in the TX, an isolator on the offending TX should solve it. I like the Sinclair isolators. 2A-B Most likely a 3rd order intermod product 146.76 X 2 = 293.52 293.52 - 147.36 = 146.16 Bad place for it to end up on. I have run into this problem several times. Telco : I think you meant to say, the trouble must be on your end, it is leaving here ok... I can't use that excuse, my SXS office does not talk to the outside world yet... Good Luck John At 06:34 PM 2/14/2009, you wrote: Bare with me this is a bit long. Our repeater is on 146.76TX / 146.16RX. In the next town the repeater having the problem is on 147.36TX / 147.96RX. Both repeaters are Motorola Micors. Our repeater is a 100 watt PA running about 60watts with a single band pass cavity between TX and a 4 cavity BPBR duplexer connected to 250 feet of 7/8 hard line and a DB224 antenna. The distance between repeaters is about 18 miles line of sight with no obstructions. The other repeater is running a smaller PA driver with an output of 25 watts. I am not sure of the full power capability of this driver. This PA then drives a � KW tube type final set at about 90 watts. This is connected to a 4 cavity BPBR duplexer, 200 feet of � hard line, and a DB224 antenna. The problem is when the our repeater 146.76 is in transmit and someone keys the 147.36 repeater a loop condition is set up locking on the 147.36 on until the 146.76 drops. Also audio feedback is heard on the 146.36 repeater. This is typical receiver transmitter intermod. Here is what I have done so for. I checked the 146.76 repeater and there is no signal on it on 147.96 or any other frequency other than 146.76. I then drove to the 146.36 repeater location and from my car in front of the repeater building duplicated the problem by transmitting on 146.76. As we used to say in the phone business, the trouble is leaving here OK. Next I put a calibrated receiver on the TX port of their BPBR duplexer and measured about -50DB when the 146.76 repeater was on. Also I could not squelch out the .76 signal by holding my hands over the antenna of my handheld radio in the building. There is lots of.76 signal down there so I suspect transmitter mixing of the 146.76 with 147.36 in the .36 PA. But where? I disconnected the � KW PA and hooked the driver up directly to the duplexer and the mixing signal on 147.96 is worse. I then put one band pass 147.36, band reject 147. 76 cavity between the PA driver and the duplexer. To my surprise the mixing signal on 147.96 is even higher! I also tried a single band pass cavity with about the same results. Having run out of cavity's I came back home. I realize their PA driver most likely needs to be checked. If the driver PA is ok they will need 30 to 50 DB of isolation between the 147.36 final and the duplexer which will be at least two cavities. I was able to duplicate this mixing with a couple of 2 meter radios, a lossy T connector and a signal generator. I took two high pass cavities out of a duplexer tuning then to pass 147.36 and reject 146.76. I ended up with around 70DB of rejection and 2DB in the pass. I
RE: [Repeater-Builder] Help with Motorola amp
It's not clear (literally) which component in the pictures is suspect. However, the N1254A amplifier was never intended, nor is it suitable, for repeater service. It was designed as an accessory for the MX300 ConvertaCom, where its duty cycle was very low, and it was fed just 4 to 5 watts. The fact that it lasted as long as it did is probably luck, and possibly a testament to its good design. The instruction manual for the N1254A amplifier is 6881013C30 which, unfortunately, is NLA from Motorola. There are a few of these amplifiers and manuals listed on one of the auction sites. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of The Marlins Sent: Thursday, February 05, 2009 9:31 AM To: repeater-builder@yahoogroups.com Subject: [Repeater-Builder] Help with Motorola amp Hello group, The Fessenden Club on Hatteras Island has a Motorola brick mobile type amp on our Two Meter repeater. We have had this thing for years. we feed it about 7 watts and it faithfully puts out about sixty into our Sinclair duplexer and up to a DB 224 at about 180 ft. This amp has crashed and one of our fellow club members is repairing it (AA3ID).But we cant find any information about it anywhere. HELP ! K4HAT down Cape Hatteras way. Amp is a Motorola N1254A, VHF Board is the main power amp board, 84E84361B01 Unknown component is either a diode or resistor. Photos attached
Re: [Repeater-Builder] Help with Motorola amp
A photo of the entire PA may help someone identify it better. Looks like a resistor. If it's one of the resistors I'm thinking of, it might be cheaper to replace the entire board because the final transistors may be blown. But, it can't be certain without more information. And I'm not that much of a Motorola guy. Chuck WB2EDV - Original Message - From: The Marlins To: repeater-builder@yahoogroups.com Sent: Thursday, February 05, 2009 12:30 PM Subject: [Repeater-Builder] Help with Motorola amp Hello group, The Fessenden Club on Hatteras Island has a Motorola brick mobile type amp on our Two Meter repeater. We have had this thing for years. we feed it about 7 watts and it faithfully puts out about sixty into our Sinclair duplexer and up to a DB 224 at about 180 ft. This amp has crashed and one of our fellow club members is repairing it (AA3ID).But we cant find any information about it anywhere. HELP ! K4HAT down Cape Hatteras way. Amp is a Motorola N1254A, VHF Board is the main power amp board, 84E84361B01 Unknown component is either a diode or resistor. Photos attached
[Repeater-Builder] Help: Cushman Service Monitor AC Power Supply
Folks, I need your counsel on repairing a Cushman CE-5100 Service Monitor (similar to CE-50 and CE-5110). The AC power switching supply stopped working (no fuses blown) and I understand that this is a common problem. It functions normally on DC when using an external power supply. Has anyone had experience working on the 90030 AC switching power supply board? I have a partial (~150pp) CE-5100 service manual with schematics, and am wondering about any unusual anomalies or difficult-to-find parts (ie: switcher IC). Not too much info about Cushman (except scooters) on Google. Thanks - Bill N4LG
Re: [Repeater-Builder] HELP! 2nd try GE Mastr II 900Mhz
On Thu, 11 Sep 2008, Dan wrote: I have in my possesion a true 900Mhz Mastr II repeater. I was so surprized to find it I didnt look around for any manuals. Does ANYONE have information on this rare bird??? It has what looks to be a IDA controller and some kind of secondary board mounted on top of the cabinet. It is all true GE in the gold anodized cabinet, card cage, drawer unit. Anyone?? help? point me to the info, would love to get this war horse working! You might try asking AR902: http://groups.yahoo.com/group/AR902Mhz/ -- Kris Kirby, KE4AHR [EMAIL PROTECTED] But remember, with no superpowers comes no responsibility. --rly
Re: [Repeater-Builder] HELP! 2nd try GE Mastr II 900Mhz
Dan; I can be of some assistance... I am not aware of anything actually called a 900 mastr II it was called a GE Net 900 station and was a business format similar to edacs... There were 900 mhz stations called Mastr Prism as well...but sounds like you have the former. It requires an external ref osc connection of something like 17.64 mhz... to run the tx and rx. The system controller is called a GETC and provides for all analog and digital processing at 4800 baud over the air control data rate. it is a 1u slide out rack unit directly atop the station. The station will work fine for 900 ham if you take control of the PLL and disable freq control from GETC and/or local binary switches attached on top of the synthesized exciter inside the door. In both instalations I am aware of the GETC was completely disconnected, but from what I now know, that would not really be necessary especially if you wanted to use the digital capability of the station it is mixed mode by default I know of 2 others on the air for ham, I directly contributed to the pll control of one and made my design from notes from the first. I have some atmel code for a controller to do the freq load and control. I never really wrote it up as they are so scarce in the market. Depending on your level of building, it is quite a nice find, and I will be glad to contribute what I can. Many of the LBI's are available on repeater builder and I have pdf's of those that are missing.. search under Ge Net feel free to contact me direct for more info.. Doug KD8B At 10:43 PM 9/10/2008, you wrote: I have in my possesion a true 900Mhz Mastr II repeater. I was so surprized to find it I didnt look around for any manuals. Does ANYONE have information on this rare bird??? It has what looks to be a IDA controller and some kind of secondary board mounted on top of the cabinet. It is all true GE in the gold anodized cabinet, card cage, drawer unit. Anyone?? help? point me to the info, would love to get this war horse working! Dan/NØFPE
Re: [Repeater-Builder] HELP! 2nd try GE Mastr II 900Mhz
Gene on AR902 did some of those, he should be able to help.
Re: [Repeater-Builder] HELP! 2nd try GE Mastr II 900Mhz
Actually Gene W7UVH did a conversion of 800 Mastr II's to 900... The 900 station is equivalent to a late Mastr II Edacs station... just before MIIe... They are synthesized already with a synthesizer similar to the late 800 GMarc V trunking stationsbut controlled by a GETC shelf, probably a turbo GETC.. but yes we are on the AR902mhz list...and I just try not to beat folks up with that all the time :-) Doug KD8B At 12:50 PM 9/13/2008, you wrote: Gene on AR902 did some of those, he should be able to help.
[Repeater-Builder] HELP!! 900Mhz
I have aquired a 900MHZ MastrII. Yes thats right a 900mhz MtrII. I need any and all information I can get on this thing to see if its even worth the time and effort to play with it. At this point it looks like it has a IDA controller and another outboard control or interface on top of the unit. It is all true GE. As far as the little checking I have done it looks to have NO mods. Any one out there in Mastr II land have any information or at least point me to the places to look?? I have a Motorola MSF-5000 900mhz on the air but would LOVE to make this GE work! Thanks in advance! Dan/NØFPE
[Repeater-Builder] HELP! 2nd try GE Mastr II 900Mhz
I have in my possesion a true 900Mhz Mastr II repeater. I was so surprized to find it I didnt look around for any manuals. Does ANYONE have information on this rare bird??? It has what looks to be a IDA controller and some kind of secondary board mounted on top of the cabinet. It is all true GE in the gold anodized cabinet, card cage, drawer unit. Anyone?? help? point me to the info, would love to get this war horse working! Dan/NØFPE
[Repeater-Builder] Help needed on PD-526 UHF duplexer
I picked up a PD-526 UHF duplexer as part of a rebuild of a local community college repeater (W6BAB). See these two photos : http://www.repeater-builder.com/wa6ilq/pd526-duplexer/duplexer.jpg http://www.repeater-builder.com/wa6ilq/pd526-duplexer/rg-8.jpg As visible in the photos this duplexer is missing the center section of the harness, plus it's so old that it has RG-8 jumpers between the cavities,and the outer jacket of that RG-8 is cracking. I'd like to replace the entire harness with modern cable but need some length measurements of the harness. Does anybody have one that they can measure? Any suggestions as to cable, or a vendor ? My current plan is to use RG-393 and new Kings or Amphenol N Connectors. (Why 393? Well, it's going on a 60 watt repeater right now, and RG142 would be fine, but down the road the duplexer will probably end up on the output of a 250 w Micor, and if you are going to make up a harness that will be used for the next 30 years why impose limits on yourself ? Besides RG142 is LOSSY) Mike WA6ILQ
Re: [Repeater-Builder] Help needed on PD-526 UHF duplexer
Physician, heal thyself! Did YOU look on www.repeater-builder.com? I know there's a cut chart (PDF file) that lists several models, including the 526 using RG214 coax. Probably in the Antenna section. Do you know how good it feels to tell the great one to look in his own back yard for a change?!?!?! Sorry, I couldn't resist! Bob M. == --- On Tue, 9/2/08, Mike Morris WA6ILQ [EMAIL PROTECTED] wrote: From: Mike Morris WA6ILQ [EMAIL PROTECTED] Subject: [Repeater-Builder] Help needed on PD-526 UHF duplexer To: Repeater-Builder@yahoogroups.com Date: Tuesday, September 2, 2008, 4:26 PM I picked up a PD-526 UHF duplexer as part of a rebuild of a local community college repeater (W6BAB). See these two photos : http://www.repeater-builder.com/wa6ilq/pd526-duplexer/duplexer.jpg http://www.repeater-builder.com/wa6ilq/pd526-duplexer/rg-8.jpg As visible in the photos this duplexer is missing the center section of the harness, plus it's so old that it has RG-8 jumpers between the cavities,and the outer jacket of that RG-8 is cracking. I'd like to replace the entire harness with modern cable but need some length measurements of the harness. Does anybody have one that they can measure? Any suggestions as to cable, or a vendor ? My current plan is to use RG-393 and new Kings or Amphenol N Connectors. (Why 393? Well, it's going on a 60 watt repeater right now, and RG142 would be fine, but down the road the duplexer will probably end up on the output of a 250 w Micor, and if you are going to make up a harness that will be used for the next 30 years why impose limits on yourself ? Besides RG142 is LOSSY) Mike WA6ILQ
Re: [Repeater-Builder] Help needed on PD-526 UHF duplexer
This model is now manufactured by EMR in Phoenix, AZ. http://www.emrcorp.com/brochures/23/RFS%20Brochure_526%20Series.pdf EMR may be able to make a new harness for you. Cables should be an electrical 1/4 wave, so it depends on the coax. I am currently refurbishing one and planning on using RG-142, It has less loss than RG-223, And 4.5 is about .025dB . On Tue, Sep 2, 2008 at 3:49 PM, Bob M. [EMAIL PROTECTED] wrote: Physician, heal thyself! Did YOU look on www.repeater-builder.com? I know there's a cut chart (PDF file) that lists several models, including the 526 using RG214 coax. Probably in the Antenna section. Do you know how good it feels to tell the great one to look in his own back yard for a change?!?!?! Sorry, I couldn't resist! Bob M. == --- On Tue, 9/2/08, Mike Morris WA6ILQ [EMAIL PROTECTED] wrote: From: Mike Morris WA6ILQ [EMAIL PROTECTED] Subject: [Repeater-Builder] Help needed on PD-526 UHF duplexer To: Repeater-Builder@yahoogroups.com Date: Tuesday, September 2, 2008, 4:26 PM I picked up a PD-526 UHF duplexer as part of a rebuild of a local community college repeater (W6BAB). See these two photos : http://www.repeater-builder.com/wa6ilq/pd526-duplexer/duplexer.jpg http://www.repeater-builder.com/wa6ilq/pd526-duplexer/rg-8.jpg As visible in the photos this duplexer is missing the center section of the harness, plus it's so old that it has RG-8 jumpers between the cavities,and the outer jacket of that RG-8 is cracking. I'd like to replace the entire harness with modern cable but need some length measurements of the harness. Does anybody have one that they can measure? Any suggestions as to cable, or a vendor ? My current plan is to use RG-393 and new Kings or Amphenol N Connectors. (Why 393? Well, it's going on a 60 watt repeater right now, and RG142 would be fine, but down the road the duplexer will probably end up on the output of a 250 w Micor, and if you are going to make up a harness that will be used for the next 30 years why impose limits on yourself ? Besides RG142 is LOSSY) Mike WA6ILQ Yahoo! Groups Links
RE: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer
No, you will only see the peak and skirts of the generated signal, you need to terminate all the duplexer ports with 3db 50 ohm pads and tune for pass first, lock those down them tune the reject path Bottom of first link is a sketch. 73 Don W5DK http://www.repeater-builder.com/wacom/wp6xx-vhf-tuning-instructions.pdf http://www.repeater-builder.com/antenna/ant-sys-index.html#duplexers From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Joel Sent: Thursday, June 26, 2008 10:54 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer Can someone in the group give me a sketch diagram of the setup, for tuning a duplexer with the following equipment I have?. I have two (2) service monitors (Marconi 2955/A), and a spectrum analyzer (Avcom PSA-65A, no built-in tracking generator) Q...Will I be able to see the response graph of the duplexer, as when I use a spectrum analyzer with a built-in tracking generator? All comments will be appreciated, and set aside for the radio club here archive. v44kai.Joel.
Re: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer
Got you Don, thanks for responding. But I'm looking for something more specific as to, how one may hook up, the aforementioned equipment to do what the spectrum analyzer/with the TG does to obtain a set of duplexer tuned to a specific frequency. v44kai.Joel. - Original Message - From: de W5DK To: Repeater-Builder@yahoogroups.com Sent: Thursday, June 26, 2008 11:40 AM Subject: RE: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer No, you will only see the peak and skirts of the generated signal, you need to terminate all the duplexer ports with 3db 50 ohm pads and tune for pass first, lock those down them tune the reject path Bottom of first link is a sketch. 73 Don W5DK http://www.repeater-builder.com/wacom/wp6xx-vhf-tuning-instructions.pdf http://www.repeater-builder.com/antenna/ant-sys-index.html#duplexers From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Joel Sent: Thursday, June 26, 2008 10:54 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer Can someone in the group give me a sketch diagram of the setup, for tuning a duplexer with the following equipment I have?. I have two (2) service monitors (Marconi 2955/A), and a spectrum analyzer (Avcom PSA-65A, no built-in tracking generator) Q...Will I be able to see the response graph of the duplexer, as when I use a spectrum analyzer with a built-in tracking generator? All comments will be appreciated, and set aside for the radio club here archive. v44kai.Joel. -- No virus found in this incoming message. Checked by AVG. Version: 8.0.101 / Virus Database: 270.4.1/1519 - Release Date: 6/25/2008 4:13 PM
RE: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer
Joel, it will be almost the same, but instead of seeing the “waves” of the peak/pass and dip/notch., you will only see the vertical “spike” of the generated signal. Just like if you hooked the generator directly to the S/A. you will only be able to adjust for max pass of the desired freq (tallest spike)and min pass (shortest spike)of the reject/notch freq. Hook the s/a to the antenna port, a dummy to one side of the duplexer while generating into the side you are adjusting. Then switch sides. I used to have to do exactly this till I got a tracking gen s/a. --then I re-visited some of my work and it couldn’t be improved. Made me wonder why I spent the extra money on the new service monitor. hi 73 Don W5DK From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Joel Sent: Thursday, June 26, 2008 1:14 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer Got you Don, thanks for responding. But I'm looking for something more specific as to, how one may hook up, the aforementioned equipment to do what the spectrum analyzer/with the TG does to obtain a set of duplexer tuned to a specific frequency. v44kai.Joel. - Original Message - From: de W5DK mailto:[EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Thursday, June 26, 2008 11:40 AM Subject: RE: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer No, you will only see the peak and skirts of the generated signal, you need to terminate all the duplexer ports with 3db 50 ohm pads and tune for pass first, lock those down them tune the reject path Bottom of first link is a sketch. 73 Don W5DK http://www.repeater-builder.com/wacom/wp6xx-vhf-tuning-instructions.pdf http://www.repeater-builder.com/antenna/ant-sys-index.html#duplexers From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Joel Sent: Thursday, June 26, 2008 10:54 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Help! Duplexer setup = with two service monitors and a spectrum analyzer Can someone in the group give me a sketch diagram of the setup, for tuning a duplexer with the following equipment I have?. I have two (2) service monitors (Marconi 2955/A), and a spectrum analyzer (Avcom PSA-65A, no built-in tracking generator) Q...Will I be able to see the response graph of the duplexer, as when I use a spectrum analyzer with a built-in tracking generator? All comments will be appreciated, and set aside for the radio club here archive. v44kai.Joel. _ No virus found in this incoming message. Checked by AVG. Version: 8.0.101 / Virus Database: 270.4.1/1519 - Release Date: 6/25/2008 4:13 PM
[Repeater-Builder] HELP!!!!
In an effort to expand radio coverage for an event coming up- we have done the following: System is a 7330 port 1- Local Micor repeater port 2- Link radio half duplex to another repeater port 3- link radio half duplex to another repeater System is normally port 1 2 and it works great. Port 3 is the new addition. No matter what I do- kerchunk delay, anything I try I cannot get 23 to stop bouncing between them. Both systems on 23 are running real minimal, no ID's, no curt beeps, 1 sec hangtime. I would write a macro to turn off rx3 for 4 sec after rx1 or 2 unkeys, but I wold need the Pause feature of a macro which does not exist yet according to the manual. I'm out of ideas- anyone have any? Thanks!! Tom W9SRV Brian WD9HSY
RE: [Repeater-Builder] HELP!!!!
Set the tail time to 0. They are seeing each others tails. You could set the repeaters connecting to port 1 and 2 to PL on COR then set the half duplex link radios to pl decode. Rob. KS4EC Sent by Good Messaging (www.good.com) -Original Message- From: tgundo2003 [mailto:[EMAIL PROTECTED] Sent: Friday, June 20, 2008 05:16 PM Eastern Standard Time To: Repeater-Builder@yahoogroups.com Subject:[Repeater-Builder] HELP In an effort to expand radio coverage for an event coming up- we have done the following: System is a 7330 port 1- Local Micor repeater port 2- Link radio half duplex to another repeater port 3- link radio half duplex to another repeater System is normally port 1 2 and it works great. Port 3 is the new addition. No matter what I do- kerchunk delay, anything I try I cannot get 23 to stop bouncing between them. Both systems on 23 are running real minimal, no ID's, no curt beeps, 1 sec hangtime. I would write a macro to turn off rx3 for 4 sec after rx1 or 2 unkeys, but I wold need the Pause feature of a macro which does not exist yet according to the manual. I'm out of ideas- anyone have any? Thanks!! Tom W9SRV Brian WD9HSY Since 1974, the award-winning Alpert JFCS has helped families of all faiths throughout most of Palm Beach County, FL, via counseling, seniors services, residences for the disabled, mentoring children, support groups and a lot more. SOLUTIONS FOR LIVING www.JFCSonline.com Please take note of our new website and E-Mail Addresses. Please update your contacts ASAP. NOTICE: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer.
RE: [Repeater-Builder] HELP!!!!
Thanks- Found one more tail i missed on one machine- all good now!!! Tom W9SRV --- On Fri, 6/20/08, Robert Pease [EMAIL PROTECTED] wrote: From: Robert Pease [EMAIL PROTECTED] Subject: RE: [Repeater-Builder] HELP To: Repeater-Builder@yahoogroups.com Date: Friday, June 20, 2008, 4:24 PM RE: [Repeater-Builder] HELP Set the tail time to 0. They are seeing each others tails. You could set the repeaters connecting to port 1 and 2 to PL on COR then set the half duplex link radios to pl decode. Rob. KS4EC Sent by Good Messaging (www.good.com) -Original Message- From: tgundo2003 [mailto:[EMAIL PROTECTED] Sent: Friday, June 20, 2008 05:16 PM Eastern Standard Time To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] HELP In an effort to expand radio coverage for an event coming up- we have done the following: System is a 7330 port 1- Local Micor repeater port 2- Link radio half duplex to another repeater port 3- link radio half duplex to another repeater System is normally port 1 2 and it works great. Port 3 is the new addition. No matter what I do- kerchunk delay, anything I try I cannot get 23 to stop bouncing between them. Both systems on 23 are running real minimal, no ID's, no curt beeps, 1 sec hangtime. I would write a macro to turn off rx3 for 4 sec after rx1 or 2 unkeys, but I wold need the Pause feature of a macro which does not exist yet according to the manual. I'm out of ideas- anyone have any? Thanks!! Tom W9SRV Brian WD9HSY Since 1974, the award-winning Alpert JFCS has helped families of all faiths throughout most of Palm Beach County , FL , via counseling, seniors services, residences for the disabled, mentoring children, support groups and a lot more. SOLUTIONS FOR LIVING (R) www.JFCSonline.com Please take note of our new website and E-Mail Addresses. Please update your contacts ASAP. NOTICE: This e-mail message and all attachments transmitted with it are intended solely for the use of the addressee and may contain legally privileged and confidential information. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution, copying, or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by replying to this message and please delete it from your computer.
[Repeater-Builder] Help with a GE mstr II
I have a GE mstr II rack repeater. Uhf version. I am installing an rc210 controller. I have all the cards out accept the 10 v regulator card plus I have the guard tone board and the encode board installed. These are original boards. I have found receive flat audio, transmit audio, PTT, and cos. The problem I have is finding a good source for decode logic for the controller. The RUS and the CAS all work on carrier no problem. I need to have decode and encode working on the repeater. I tried a lot of different ways. I have the jumpers on the 10v board at 3-9 and 4-2 seems to work ok but I still have problems. Does anyone know the right jumpers on the system board and the jumpers on the 10 v control board? Any help would be great . I found a voltage drop on the system board pin 3 j 908 on the code board label is cg disable 6.8 volt with tone .77 . At this point I don't have audio through the repeater. The id works , I have it key up with no audio. The contoller is in ctss mode . If I have it carrier mode works great . All the information I have found is about aftermarket decode/encode boards. I need help with the original boards. It is something simple I have not found it yet
[Repeater-Builder] Help: Info needed on feed harness to DB-230 low band antenna.
The factory provided feed harness was lost for our Decibel Products DB- 230, 3 element Yagi, that is being refurbished for 6 meters. The driven element on this antenna has a T-match as shown in the rough photo/diagram on page 23 of Catalog No. 16. Can anyone please describe how this particular feed works and how it is configured? I will probably find what was removed in my coax junk box. I just can't remember what it looked like when it was taken off of the tower a number of years ago. Thanks, Jim
Re: [Repeater-Builder] Help with HP 8924C
Hi Paul the only way i found to dec. and enc. pl/ctcss is from tx and rx side. u need to go on tx and make af gen 1 to 300Hz to filter the ctcss and tx from radio don't make noise all athers to 1khz or 1.5khz from the rx side just insert pl/ctcss in af gen 1 and send signal from amplitude and send 1 khz for tone finaly go shift save and save the settings 73's John 9H5IC On 10/4/2008, Paul Holm [EMAIL PROTECTED] wrote: Hello, I've been working with my 8924C trying to learn each of the functions. I've been following the manual for an 8920B in order to focus on the analog functions vs. CDMA. I'm hoping other users out there could offer advice. I'm not picking up on how the unit deals with PL/CTCSS tones in encode or decode. The goal is to be able to see what tones are being put out by a TX and/or being sensed by a RX. The nearest thing I see in the menus is Func Gen. All others are CDCSS, Digi Page, Tone Seq, DTMF, LTR, EDACS, etc. Am I on the right track for PL by looking in Func Gen? Or should I be in a different Signal Decoder Mode? And then, when I've got this part straight, what should I be able to see displayed(tone freq? tone mod level?) when I monitor off-air signals? Thanks. 73 Paul - KC0HST
[Repeater-Builder] Help with Zetron 45/48 interconnect.
Hi group, Im planning to build a new project and I need information about Zetron 45/48. First, the controller is Zetron 45B but I swap the firmware U3 and U4 to transform into model 48. My firmware version is 6.93 and I can do DCS, SMDR Print, SMDR Storage, DTMF, 2 Tone, 5 Tone and 325 Users. I want to activate the SMDR Storage option and program date and hour into the unit. Into Z48 manual, Zetron recommend to Change U5 IC to SMDR Memory IC, maybe somebody on the group know the number of this IC? Maybe it is just a Smart Socket like U6 with a real clock IC. The Smart Socket on U6 is a DS1213C. At this moment U5 number is Toshiba TC5565ALP15 and if I go to the Test Option and run Test Memory Z48 respond BAD:SMDR Another question, can we bypass the back-up battery into the Smart Socket like DS1213 with other external battery? Zetron sell the Smart socket ±70$ and I saw on Maxim web site for ±15$. It is very appreciated if somebody of you have hint to bypass the expensive Zetron kit option. You can contact me off list at this address (mour at sympatico dot ca) Thank you and 73 Eric
RE: [Repeater-Builder] Help with Sinclair Q-202G
At 09:32 PM 02/24/08, you wrote: Collin, Simply replace your existing harness that has 12 center-to-center lengths with an identical harness that has 14 center-to-center lengths. The two end pieces, the ones that connect to the receiver and transmitter, can be any length that fits. Please use RG-214/U double-shielded cable, in lieu of single-shielded RG-213/U cable. You won't regret it! Since you mention eight pieces of coax, I wonder if perhaps you have the earlier version of the Q-202G duplexer. All of the Q-202G duplexers that I have converted had four cavities, and the cable harness comprised five tee connectors and two male N plugs for a total of six pieces of cable. Don't get wrapped up with wavelengths, because Sinclair wasn't that concerned about it; the high-split (150-174 MHz) harness had 12 spacing, and the low-split (138-150 MHz) harness had 14 spacing. 73, Eric Lemmon WB6FLY And a fast test is to add a right angle adapter to each end of the existing cable pieces. The average right angle adapter adds about an inch, so adding one to each end will lengthen the cable to 14 inches, plus or minus... Now, I wouldn't use adapters for a long term solution, but it works for testing. Mike WA6ILQ
Re: [Repeater-Builder] Help with Sinclair Q-202G
Collin, it depends on what vintage Q-202G you have. I have four duplexers that have the rexolite rod caps to adjust the notch frequency on each cavity, and I brought them down into the ham band by increasing the length of the jumper cable that connects directly to the cavity from 10.5 inches to 12.5 inches. I also came up with a manual and Eric Lemmon scanned it into a PDF file and posted the manual on the repeater-builder site. http://www.repeater-builder.com/sinclair/q202-208-218-tuning.pdf The manual explains how to tune the duplexer to a new frequency. What you have to keep in mind is that the first piece of cable connecting to each cavity is part of the notch circuit and that piece of cable in conjunction with the variable setting of the dialectric rod determines the frequency of the notch. Also keep in mind that this circuit produces a notch above and below the center frequency the cavity is tuned to, and the high and low sides of the duplexer have identical circuitry. 73 - Jim W5ZIT [EMAIL PROTECTED] wrote: Dear Friends, I am working on retuning a Sinclair Q-202G duplexer to 144.810/145.410. The question I have is about the new cables I will need. First will I need all new cables? What I mean is there are actually eight pieces in all. These need to be 1/4 wave each? Also when measuring these I know the measurement is from the center of the T connector. When measuring to a connection on a stub where is the measurement taken from? I have some RG-213 cables which measure 12 from T center to T center. Anyone that can help would be greatly appreciated. Thanks, Collin - Never miss a thing. Make Yahoo your homepage.
[Repeater-Builder] Help with Sinclair Q-202G
Dear Friends, I am working on retuning a Sinclair Q-202G duplexer to 144.810/145.410. The question I have is about the new cables I will need. First will I need all new cables? What I mean is there are actually eight pieces in all. These need to be 1/4 wave each? Also when measuring these I know the measurement is from the center of the T connector. When measuring to a connection on a stub where is the measurement taken from? I have some RG-213 cables which measure 12 from T center to T center. Anyone that can help would be greatly appreciated. Thanks, Collin More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com
Re: [Repeater-Builder] Help with Sinclair Q-202G
At 04:38 PM 2/24/2008, you wrote: Dear Friends, I am working on retuning a Sinclair Q-202G duplexer to 144.810/145.410. The question I have is about the new cables I will need. First will I need all new cables? ---It depends on where the duplexer was originally. I run a Q-202G (six cavity) and didn't need to replace a thing when it was retuned down from the 150 region Ken -- President and CTO - Arcom Communications Makers of repeater controllers and accessories. http://www.arcomcontrollers.com/ Authorized Dealers for Kenwood and Telewave and we offer complete repeater packages! AH6LE/R - IRLP Node 3000 http://www.irlp.net We don't just make 'em. We use 'em!
Re: [Repeater-Builder] Help with Sinclair Q-202G
The cavities will probably go, the harness may not. What is the frequency on the label ? Unless someone has replaced the harness that is a good indicator as to which one you have (there were two). Mike WA6ILQ At 04:38 PM 02/24/08, you wrote: Dear Friends, I am working on retuning a Sinclair Q-202G duplexer to 144.810/145.410. The question I have is about the new cables I will need. First will I need all new cables? What I mean is there are actually eight pieces in all. These need to be 1/4 wave each? Also when measuring these I know the measurement is from the center of the T connector. When measuring to a connection on a stub where is the measurement taken from? I have some RG-213 cables which measure 12 from T center to T center. Anyone that can help would be greatly appreciated. Thanks, Collin More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com Yahoo! Groups Links
RE: [Repeater-Builder] Help with Sinclair Q-202G
Collin, Simply replace your existing harness that has 12 center-to-center lengths with an identical harness that has 14 center-to-center lengths. The two end pieces, the ones that connect to the receiver and transmitter, can be any length that fits. Please use RG-214/U double-shielded cable, in lieu of single-shielded RG-213/U cable. You won't regret it! Since you mention eight pieces of coax, I wonder if perhaps you have the earlier version of the Q-202G duplexer. All of the Q-202G duplexers that I have converted had four cavities, and the cable harness comprised five tee connectors and two male N plugs for a total of six pieces of cable. Don't get wrapped up with wavelengths, because Sinclair wasn't that concerned about it; the high-split (150-174 MHz) harness had 12 spacing, and the low-split (138-150 MHz) harness had 14 spacing. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Sunday, February 24, 2008 4:39 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Help with Sinclair Q-202G Dear Friends, I am working on retuning a Sinclair Q-202G duplexer to 144.810/145.410. The question I have is about the new cables I will need. First will I need all new cables? What I mean is there are actually eight pieces in all. These need to be 1/4 wave each? Also when measuring these I know the measurement is from the center of the T connector. When measuring to a connection on a stub where is the measurement taken from? I have some RG-213 cables which measure 12 from T center to T center. Anyone that can help would be greatly appreciated. Thanks, Collin
[Repeater-Builder] HELP - 3x Mitreks will Not Tune up for Repeater RX on 10mtrs.
Hi All, I am now in need a some big HELP. I have been trying to get our groups 10mtr repeater up and running, and it seems to want to block me at each point. I am very grateful for the help that has been given so far, and this has got us to the point where we have 50% of the repeater running. But as I said above, it appears that I have hit a block again. I can not get the RX to tune anywhere down to the specs the radio says of .3uV. The best I can do is 1.9uV. And this is the same for all 3 radios I have. The radio were originally fitted with 33Mhz ICOMS, and I have now fitted them with 29.540 ICOMS. They are tuning up, but not as good as I would expect. Our work radio techinian is even baffled as to the problem, and he has 3 decades+ experiance. Checking the schmatic I notice there is no pre-amp on the RF input. I could add a pre-amp here, and this would help. But before I go this route I am asking if there is anything else I can do to get it (them) working better. FYI, I am using our companies radio workshop which has all the required tuning and testing equipment for the aligniment. Be it not the Motorola gear, but it does the job. I can't remember the model numbers, radios are still at work, but they correspond to 60w, single channel, with extender fitted. My understanding from others within this group, these radios will tune down to 29.540 without any trouble. So, am I doing something wrong? (Not famillar with Mitreks here in NZ, never made it this far downunder). Are all 3 radios faulty? I can't see why, but maybe. Are there mods that are required that I have overlooked in all the information I have onhand, from the many web-pages? Do I need to go to another type of radio? And if so, which one/s? Then does anyone have one available? Or come to that, does someone have a tuned Mitrek they can spare to sell (or donate). I will also post this on the repeater-builders user group just in case they can help also. Thanks for any input, and if you wish to contact me directly, please e-mail me at [EMAIL PROTECTED] Please remove the - in the gmail account, I try and limit the spam I get. With the increase of 10mtr activity down here, have a listen for ZL1HK on 29.64Mhz Regards Kevin, ZL1KFM.
[Repeater-Builder] HELP! KENWOOD TKR 720-low Rx sensitivity.
We have a standby Repeater Kenwood TKR 720, whenever we replace this to our old Yaesu FTR 2410 the outer foot prints are lost and no access to weak station even at the lowest power of 15watts. The equipment is very less used. Came to us as a new one. No mods done. How about connecting a separate RX ? Any mods? please help us ... ( TKR 750K2 is different with good ears-we tried) PETER VU2PJP.
[Repeater-Builder] Help needed re contacting W. C. Cloniger K3OF
Repeater builder is trying to get permission to reprint an old article. Does anybody have an email address for W. C. Cloniger K3OF, last address in Gainesville, Georgia ?? Mike WA6ILQ
Re: [Repeater-Builder] Help: need to ID part on PSC-1422 Pwr. Sup.
Disregard the earlier request message. The part is a diode and a 3A 400PIV Rat Shack replacement fixed the problem . -- Doug N3DAB/WPRX486/WPJL709 n3dab [EMAIL PROTECTED] wrote: = Can anyone ID CR101 on the regulator board of a Wilson PSC-1422 Power Supply. What ever it was, it is completly burnt up, and I don't have a manual or schematic to look it up. Thanks Doug N3DAB
Re: [Repeater-Builder] HELP NEEDED - Programming Motorola GR-1225 repeater accessory port
I had similair problems when I tried to interface mine to a NHRC controller. My solution was to call the local Motorola dealer where I bought it from and tell him the two controlers would not play together. ( The repeater has a built in controller ). His solution was to shut off the repeat function, using software. Problem solved. Sorry, I can't help more, and I don't know what commands he used. Now I have a separate transmitter and receiver, at least as far as the controller is concerned. On Dec 6, 2007 4:12 PM, ve7ltd [EMAIL PROTECTED] wrote: I am trying to help an IRLP owner interface his GR-1225 repeater to an IRLP system. Mind you I am 1000 miles away, and can only help over the phone. The problem occurs when he tries to operate full duplex. The repeater works fine on its own, and works fine when the node is operating in half duplex. But as soon as the External PTT is asserted on Pin 3 of the accessory jack, the RX Audio from Pin 11 is being muted. I have been looking through the help file for the WinRSS that runs the 1225 series, but for the life of me I can not figure out why a full duplex repeater would do this. The audio from pin 11 needs to be squelch muted, but why is it also being muted when the external PTT is applied? Can anyone come up with a solution? How would you ever be able to configure this repeater to use an external controller? Dave Cameron - VE7LTD IRLP System Designer --- Ken
[Repeater-Builder] HELP NEEDED - Programming Motorola GR-1225 repeater accessory port
I am trying to help an IRLP owner interface his GR-1225 repeater to an IRLP system. Mind you I am 1000 miles away, and can only help over the phone. The problem occurs when he tries to operate full duplex. The repeater works fine on its own, and works fine when the node is operating in half duplex. But as soon as the External PTT is asserted on Pin 3 of the accessory jack, the RX Audio from Pin 11 is being muted. I have been looking through the help file for the WinRSS that runs the 1225 series, but for the life of me I can not figure out why a full duplex repeater would do this. The audio from pin 11 needs to be squelch muted, but why is it also being muted when the external PTT is applied? Can anyone come up with a solution? How would you ever be able to configure this repeater to use an external controller? Dave Cameron - VE7LTD IRLP System Designer
[Repeater-Builder] Help: need to ID part on PSC-1422 Pwr. Sup.
Can anyone ID CR101 on the regulator board of a Wilson PSC-1422 Power Supply. What ever it was, it is completly burnt up, and I don't have a manual or schematic to look it up. Thanks Doug N3DAB
Re: [Repeater-Builder] help with repeater
It would be very helpful to know where my area is Randy WB0VHB I am looking for some one in my area to help build a Vhf repeater. The help would need to be hands-on.Any one that can help please let me know.
Re: [Repeater-Builder] Help with dead msf 5000
I checked and found these cables intact. I wonder what voltages should be at the 5 pin plug under the control pc board. I have 14vdc on the red and black but nothing on any of the other wires. all fuses on the ps are good. Still dead in the water. - Original Message - From: Andrew G. To: Repeater-Builder@yahoogroups.com Sent: Monday, November 12, 2007 9:33 AM Subject: Re: [Repeater-Builder] Help with dead msf 5000
Re: [Repeater-Builder] Help with dead msf 5000
Do you have a diagnostic panel? Also, there is a cable with a molex connector on it that goes to the PS.. Is that firmly pluged in? Jim Miller WB5OXQ in Waco wrote: I checked and found these cables intact. I wonder what voltages should be at the 5 pin plug under the control pc board. I have 14vdc on the red and black but nothing on any of the other wires. all fuses on the ps are good. Still dead in the water. - Original Message - *From:* Andrew G. mailto:[EMAIL PROTECTED] *To:* Repeater-Builder@yahoogroups.com mailto:Repeater-Builder@yahoogroups.com *Sent:* Monday, November 12, 2007 9:33 AM *Subject:* Re: [Repeater-Builder] Help with dead msf 5000 -- Jay Urish W5GM ex. KB5VPS ARRL Life MemberDenton County ARRL VEC N5ERS VP/Trustee Monitoring 444.850 PL-88.5 146.92 PL-110.9
Re: [Repeater-Builder] Help with dead msf 5000
At 09:05 PM 11/11/07, you wrote: I bought a msf 5000 cxb vhf station for my club to build a repeater. this unit was rack mounted along with several public safety repeaters so I did not get it in the original cabinet. I was shipped the power supply, the pa and the rf deck with controller. Before shipping the seller removed a secure board because hams do not usually need them and we dont. I reasembled the unit in a 4' GE cabinet and connected all the cables that were sent to me as best as i could figure out without any instructions. When i plug the station in the 12 vdc cooling fans come on but the control deck is dead. I found 1 cable that came from the power supply and plugged it into a jack on the rear of the rf deck and another cable that went to the pa from the rf deck. I also found and connected the rf cables as needed. There are still some left over connecter pins on the pc board at the rear of the rf deck that I do not know what is supposed to be connected to. Inside the control deck I see what looks like a 5 pin connector coming from the rf deck and it does contain 13.2 vdc on the red and black wires. Something must be missing causing the controler not to light up at all. Cam anyone supply me a interconnect diagram so I can see if i have a missing cable. WB5OXQ. Look here: http://www.repeater-builder.com/motorola/msf/msf-secure-board-removal.html Mike
Re: [Repeater-Builder] Help with dead msf 5000
I do not have the test device for this model. the connecter from the power supply to the rf deck is intact at both ends. I believe this unit was working when removed from service but after the seller removed the secure audio board I suspect some jumper or cable of some kind much have been left out accidentally. I cant imagine what though. I hate to take it to the Motorola shop at 95.00 per hour. I am real sad that this wont work because I thought it would make a real good 2 meter repeater for our club. the seller says he is sorry but things happen and that is why he sold it as is. I just wish there was a ham who would help within a reasonable driving distance of Waco, TX and I would take the unit to him for help. - Original Message - From: Jay Urish To: Repeater-Builder@yahoogroups.com Sent: Tuesday, November 13, 2007 11:48 AM Subject: Re: [Repeater-Builder] Help with dead msf 5000 Do you have a diagnostic panel? Messages | Files | Photos | Links | Members Change settings via the Web (Yahoo! ID required) Change settings via email: Switch delivery to Daily Digest | Switch format to Traditional Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe Recent Activity a.. 25New Members b.. 18New Photos c.. 1New Files Visit Your Group Moderator Central Yahoo! Groups Join and receive produce updates. Biz Resources Y! Small Business Articles, tools, forms, and more. Endurance Zone A Yahoo! Group Learn how to increase endurance. .
[Repeater-Builder] Help with dead msf 5000
I bought a msf 5000 cxb vhf station for my club to build a repeater. this unit was rack mounted along with several public safety repeaters so I did not get it in the original cabinet. I was shipped the power supply, the pa and the rf deck with controller. Before shipping the seller removed a secure board because hams do not usually need them and we dont. I reasembled the unit in a 4' GE cabinet and connected all the cables that were sent to me as best as i could figure out without any instructions. When i plug the station in the 12 vdc cooling fans come on but the control deck is dead. I found 1 cable that came from the power supply and plugged it into a jack on the rear of the rf deck and another cable that went to the pa from the rf deck. I also found and connected the rf cables as needed. There are still some left over connecter pins on the pc board at the rear of the rf deck that I do not know what is supposed to be connected to. Inside the control deck I see what looks like a 5 pin connector coming from the rf deck and it does contain 13.2 vdc on the red and black wires. Something must be missing causing the controler not to light up at all. Cam anyone supply me a interconnect diagram so I can see if i have a missing cable. WB5OXQ.
