[Repeater-Builder] Rack Receiver
Looking for a Micro Control Specialties Receiver Rack Mount. This is the one that has a speaker, volume and squelch control and two switch meters in the front.Blue in color. Rack is what I really want, But if it has a uhf receiver will also be good. Receiver is not required though as rack mount is what is really wanted here. Anyone have one of these under the bench they want to sell?? Please let me know. Thank you
Re: [Repeater-Builder] Re: Mastr II Mobile Repeater?
Perry Mason. As I said, it was the OLD mobile telephone service. Some cities only had one channel and everybody had to wait their turn, like the old party line telephones. You could turn off CTCSS and monitor everyone's calls. Signaling was done (at least in my area) with dual tone sequential paging tones. The service was full duplex and there were channels on both UHF and VHF. I guess this may be showing my age. :-) Bill N4XIR From: Chris Curtis demo...@rollanet.org To: Repeater-Builder@yahoogroups.com Sent: Tue, August 3, 2010 8:32:52 PM Subject: RE: [Repeater-Builder] Re: Mastr II Mobile Repeater? Perry mason or Ironside? kb0wlf -Original Message- From: bil.isom bil.i...@yahoo.com Sent: Tuesday, August 03, 2010 7:25 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Mastr II Mobile Repeater? RCC = Radio Common Carrier. The OLD mobile telephone service. Before IMTS (Improved Mobile Telephone Service) and long before cell. BTW Perry Mason used RCC Bill N4XIR --- In Repeater-Builder@yahoogroups.com, La Rue Communications laruec...@... wrote: Gentlemen (And Ladies) I have a MASTR II Exec mobile here, I think its a UHF Repeater. I want to confirm with you - but I am curious what RCC stands for. Comb number YS55SSXX88A. Nothing comes up on Google and not sure which Comb spec sheet to look this up with Hall Electronics or here on RB Archives. Thanks for your input! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn Yahoo! Groups Links
Re: [Repeater-Builder] Re: Mastr II Mobile Repeater?
hello mobile operator. -- Original Message -- Received: Wed, 04 Aug 2010 02:00:02 AM PDT From: Bill Isom bil.i...@yahoo.com To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Mastr II Mobile Repeater? Perry Mason. As I said, it was the OLD mobile telephone service. Some cities only had one channel and everybody had to wait their turn, like the old party line telephones. You could turn off CTCSS and monitor everyone's calls. Signaling was done (at least in my area) with dual tone sequential paging tones. The service was full duplex and there were channels on both UHF and VHF. I guess this may be showing my age. :-) Bill N4XIR From: Chris Curtis demo...@rollanet.org To: Repeater-Builder@yahoogroups.com Sent: Tue, August 3, 2010 8:32:52 PM Subject: RE: [Repeater-Builder] Re: Mastr II Mobile Repeater? Perry mason or Ironside? kb0wlf -Original Message- From: bil.isom bil.i...@yahoo.com Sent: Tuesday, August 03, 2010 7:25 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Mastr II Mobile Repeater? RCC = Radio Common Carrier. The OLD mobile telephone service. Before IMTS (Improved Mobile Telephone Service) and long before cell. BTW Perry Mason used RCC Bill N4XIR --- In Repeater-Builder@yahoogroups.com, La Rue Communications laruec...@... wrote: Gentlemen (And Ladies) I have a MASTR II Exec mobile here, I think its a UHF Repeater. I want to confirm with you - but I am curious what RCC stands for. Comb number YS55SSXX88A. Nothing comes up on Google and not sure which Comb spec sheet to look this up with Hall Electronics or here on RB Archives. Thanks for your input! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn Yahoo! Groups Links
[Repeater-Builder] Re: Mastr II drift problem
I am using a PLL exciter with a 5C Icom. I am going to check the 10 volt supply. I have a couple of 10 volt cards that I will swap out if needed. Thank you Steve --- In Repeater-Builder@yahoogroups.com, Mike Morris wa6...@... wrote: At 03:33 PM 08/03/10, you wrote: Hello all, I have having a severe drift problem on my GE Mastr II 2 meter repeater. The transmit freq will drift nearly 2 KHZ over a 5-10 minute period. I have changed exciters and used a different ICOM but no improvement. The building that I am in is not ventilated and is very very hot. I put a high/low thermometer in and one day the high temp in the building was 114 degrees. Is this the problem? Thanks for any help. Steve W4SEF Can you elaborate on the situation? Is it an FM exciter or a phase mod exciter? Is it an EC, a 5C, or 2C Icom? Have you read http://www.repeater-builder.com/ge/m2icoms.html especially the paragraph that starts with Any voltage change on the +10vDC power supply line will change the frequency on the Icom... ?? You will also what to read the page at http://www.repeater-builder.com/tech-info/temperature-compensation.html. An idea on cooled down a building before you set the frequency... I once took a couple of cheapie box fans and setting one to blow in (at floor level) and the second stacked above it to blow out (at the top of the door level), and with a piece of cardboard in between them as an air dam. The cardboard was cut from the side of a large cardboard box that was used to ship a washing machine (ask for one at any appliance store). You could do something similar for the time period needed to set the frequency - your target is 75 to 80 degrees F for about an hour. Look at page 5 of this: http://www.repeater-builder.com/ge/lbi-library/lbi-38505a.pdf Yes, it's a receiver LBI, and you have a drifting transmitter, but the temperature notes apply. Mike WA6ILQ
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] Mastr II Mobile Repeater?
As pointed out by earlier posts.. it is a UHF EXEC II 450-470 Synthesized TX and RX, DUPLEX RCC Mobile telephone chassis. Circa 1980-85 ish. Approx 35 watts into the duplexer, 25 out. The RCC version was RX on 454.025 and 11 steps up from there on 25 khz centers.. paired 5 mhz offset for TX We had a bunch of them. As RCC phones they were normally paired with Secode or Glenayre Control units of various signaling formats over time.. In the days of the EXEC II synthesized unit it was probably SMART SECODE signaling .. a parallel but similarly automated technology like IMTS which was the Bell system equivalent. Like any other Exec II YS55 is the family and power level . SSXX means synthesized ( it not channel limited per-se) range 88 was the UHF 450-470 split.. Channel selection was in Binary. not ground per channel like most Exec II's..although the binary was grounds.. It is most definitely not designed as a repeater.but it was duplex.. There were 2 channel block in those bands for such. one was assigned to TELCO's only ( all the Bell's at that time) and the other block was for private operators ( now generally referred to as CMRS ) that were RADIO COMMON CARRIERS or RCC's for short.. VHF and UHF versions of duplex Exec II's can be found. as they were used by both Bell System and RCCS.. I probably have a manual around in the archives somewhere.. Doug KD8B I'm sure Harris in Lynchburg VA will have that combination breakdown. They purchased MACOM, previously purchased Ericcson, GE, etc... Gentlemen (And Ladies) I have a MASTR II Exec mobile here, I think its a UHF Repeater. I want to confirm with you - but I am curious what RCC stands for. Comb number YS55SSXX88A. Nothing comes up on Google and not sure which Comb spec sheet to look this up with Hall Electronics or here on RB Archives. Thanks for your input! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn
[Repeater-Builder] ID on GE Board
Re-sending because I never saw my post come through. You may see it twice. Chuck WB2EDV 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
[Repeater-Builder] Re: Mastr II drift problem
I have having a severe drift problem on my GE Mastr II 2 meter repeater. The transmit freq will drift nearly 2 KHZ over a 5-10 minute period. I have changed exciters and used a different ICOM but no improvement. Different ICOM, but same crystal? Might be the crystal itself wandering. I'm just learning about Mastr II systems, but I understand the various types of ICOMs have varying capabilities and functions. 1C - 1ppm internally compensated 2C - 2ppm internally compensated EC - Externally compensated 5C - 5ppm , internally compensated, and capable of also controlling ECs in the same rig. So if you have an EC, it may need a 5C (any freq, doesn't matter) in one of the other channel positions to handle the temp compensation. Steve WD8DAS sbjohns...@aol.com http://www.wd8das.net/ Radio is your best entertainment value.
Re: [Repeater-Builder] Re: Mastr II drift problem
Sometimes troubles like this are hard to find because you can't be there when it is happening. I have found that a Radio Shack Digital Voltmeter that I have and an old laptop have been handy for such times. I bought an RS DVM with the RS-232 interface on sale a few years ago. I connected it to an old laptop that I have via the RS-232 port and run the simple program that came with the DVM. It records readings over time and stores them to a file. You can then look at the file and see if things have changed over a period of time. I've used it to record AC voltage at sites where I suspected drops in voltage levels and it was helpful to get things fixed. Definitely not lab quality equipment, but very helpful in troubleshooting. This setup could easily watch the 10 volt line or the compensation voltage line. Just thought I'd pass this idea along. 73, Joe, K1ike On 8/4/2010 8:11 AM, steve wrote: I am using a PLL exciter with a 5C Icom. I am going to check the 10 volt supply. I have a couple of 10 volt cards that I will swap out if needed. Thank you Steve
Re: [Repeater-Builder] Re: Mastr II drift problem
On 8/4/2010 9:18 AM, Joe wrote: Sometimes troubles like this are hard to find because you can't be there when it is happening. I have found that a Radio Shack Digital Voltmeter that I have and an old laptop have been handy for such times. I bought an RS DVM with the RS-232 interface on sale a few years ago. I connected it to an old laptop that I have via the RS-232 port and run the simple program that came with the DVM. It records readings over time and stores them to a file. You can then look at the file and see if things have changed over a period of time. I've used it to record AC voltage at sites where I suspected drops in voltage levels and it was helpful to get things fixed. Definitely not lab quality equipment, but very helpful in troubleshooting. This setup could easily watch the 10 volt line or the compensation voltage line. Just thought I'd pass this idea along. 73, Joe, K1ike Really??? What's the model of that DMM? We could use that here! Jim
Re: [Repeater-Builder] Re: 420Mhz Radio for Voter?
Hello Butch, If you have sent pictures I did not get them. -- Tim :wq On Jul 30, 2010, at 9:24 PM, Glenn (Butch) Kanvick wrote: Hello Tim. Yes, it is the 402-430 Mhz. split radio. I have a coupleoftheMicorsandafew GEMastr II's. The TX is on 419.3750 and the RX is on 414.4750 I will get you pictures probably tommorrow afternoon. Butch, KE7FEL/r On Fri, Jul 30, 2010 at 6:02 PM, Tim - WD6AWP tisaw...@gmail.com wrote: I just need the rx, tx and pa. I can use the DC cables too. I don't need the ps or cabinet. Pictures would be nice if you can send them. And you're sure it's UHF low split 406-420? --- In Repeater-Builder@yahoogroups.com, Glenn (Butch) Kanvick hotl...@... wrote: Hello Tim. This message made it through. Do you need just the transmitter, receiver and the card cage or do you want the complete radio with power supply and cabinet? Do you need pictures of the repeater? Thanks, Butch, KE7FEL/r On Fri, Jul 30, 2010 at 5:03 PM, Tim - WD6AWP tisaw...@... wrote: Butch, I replied to you off list but maybe your spam filter got me. I'm interested so please check your email. -- Tim --- In Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com, Glenn (Butch) Kanvick hotlrv1@ wrote: Hello Tim. I just looked in my storage site and I found a Micor Base/Repeater which is on the band split of 402-430 MHz. I do not have channel elements for it. I know it was working when it came out of service a few years ago, and the PA can be used as a digital station, as it takes the four pin channel elements. It is the complete base repeater which is designed for continious duty as it has the large pa heatsinks. Let me know if you would like pictures of it. I have $200.00 into it and it weighs alot so I am sure shipping via ground would be around $50.00. If you need the cabinet and power supply it would be $400.00 plus actual shipping. Butch, KE7FEL/r On Thu, Jul 29, 2010 at 1:33 PM, Tim - WD6AWP tisawyer@ wrote: Those CDM radios are a bit pricy at $550 each. But I appreciate the suggestion. And you've given me some ideas. I still like the idea of building an out of band repeater for the remote receive site from a Micor chassis. I would need a 406-420 exciter, bandpass filter and trippler. If anybody on the list has those or can help me find them I'd really appreciate it. --- In Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com Repeater-Builder%40yahoogroups.com, James Adkins adkins.james@ wrote: I am using the Motorola CDM series of radios for 420-425 MHz links from voting sites. They make a low-split UHF split that covers 403-470 MHz out of the box, no mods needed. On the transmit sites, you will want to use a fan for cooling. We mount the RX radio and a UHF TX radio on a 1U rack shelf, use a 4 hole saw and drill a hole under the UHF TX radio, and purchase a nice Dayton 24vdc fan that is actually a ball bearing fan that you can count on for years of use, and let it go. Have not had any problems to date with these rigs over a 4 year span. at W6KGBs article on moving 450-470 Mastr IIs to 420-450. It's on the GE Mastr II page at repeater-builder. You could use a Mastr II UHF mobile with the receiver, exciter and IPA converted to 420, then use the receiver in an aux receiver chassis at the voter site. You wouldn't need to convert the PA, the IPA (driver) and a beam would be enough for a point-to-point link. Bob Meister WA1MIK did an article on converting the multiplier chains so that the UHF Micor receivers could hear down as low as 435 MHz (where the front ends run out of tuning range). Mike WA6ILQ At 05:10 PM 07/27/10, you wrote: Thanks Jeff, I'll keep looking around for those low split UHF Micor receivers. What about the transmit side? Maybe I should look for a unified chassis low split UHF repeater. Swap out the UHF receiver for a VHF high band receiver and use that for my remote receiver site. Then use the low split UHF receiver on the other end of the link. That make sense? --- In Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com Repeater-Builder%40yahoogroups.com Repeater-Builder%40yahoogroups.com, Jeff DePolo jd0@ wrote: When you say low split, are you talking about the Motorola TRE1201/TRE8031 406-420 Mhz receivers? I don't have a manual in front of me, but yes, 406-420 receivers, they'll
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???
Re: [Repeater-Builder] Re: Mastr II drift problem
Radio Shack Cat No 22-812, I don't know if they even sell them anymore. Joe On 8/4/2010 9:50 AM, wd8chl wrote: Really??? What's the model of that DMM? We could use that here! Jim
[Repeater-Builder] Hygain in Starkville MS
Has anyone heard any scuttlebutt about Hygain Industries? Every time I try to call the line is busy and I have tried for three days. I ordered some parts from them a few weeks back and have never received them. With the economy the way it is I was wondering if they went belly up. I sure hope not but no customer service is usually one of the first signs of trouble in a company. Randy
[Repeater-Builder] Hygain in Starkville MS
Didn't MFJ buy them? Seems when I was working on my Ham IV, they were one of the places I could order parts from. Tim
RE: {Disarmed} [Repeater-Builder] Hygain in Starkville MS
They have their own web site at www.hygain.com
Randy
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tim
Sent: Wednesday, August 04, 2010 11:03 AM
To: Repeater-Builder@yahoogroups.com
Subject: {Disarmed} [Repeater-Builder] Hygain in Starkville MS
Didn't MFJ buy them?
Seems when I was working on my Ham IV, they were one of the
places I could order parts from.
Tim
RE: {Disarmed} [Repeater-Builder] Hygain in Starkville MS
Sorry, I think that is www.hy-gain.com
RB
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tim
Sent: Wednesday, August 04, 2010 11:03 AM
To: Repeater-Builder@yahoogroups.com
Subject: {Disarmed} [Repeater-Builder] Hygain in Starkville MS
Didn't MFJ buy them?
Seems when I was working on my Ham IV, they were one of the
places I could order parts from.
Tim
Re: [Repeater-Builder] Re: Mastr II drift problem
Is the Icom an EC model? If so you need to have at least a 5C plugged in to compensate it. Preferably a 2C on transmit. EC = External Compensation. 5C=5 ppm stability and 2C= 2 ppm. You can also check the pins on the exciter board, they have a history of being cold soldered or breaking loose. As a matter of course, I'd resolder all of them while you are in there. Bill From: Stanley Stanukinos ka5...@swbell.net To: Repeater-Builder@yahoogroups.com Sent: Tue, August 3, 2010 8:06:53 PM Subject: RE: [Repeater-Builder] Re: Mastr II drift problem Next thing look at the comp voltage going to the tcxo it comes off of the 10v reg card. Have you checked or swapped it yet? From:Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of steve Sent: Tuesday, August 03, 2010 8:06 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Mastr II drift problem Hi Stan, Yes I sent the crystals to International. I have 3 fans running full time on the heat sink. Thanks for any help! Steve --- In Repeater-Builder@yahoogroups.com, Stanley Stanukinos ka5...@... wrote: Did you just buy the crystals and insert them in the ICOMs or did you send them in to the crystal MFG to be compensated. If you did them yourself the compensation is probably now messed up. The best way to fix it is to send them in to the crystal MFG for compensation. Stan From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of steve Sent: Tuesday, August 03, 2010 5:33 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Mastr II drift problem Hello all, I have having a severe drift problem on my GE Mastr II 2 meter repeater. The transmit freq will drift nearly 2 KHZ over a 5-10 minute period. I have changed exciters and used a different ICOM but no improvement. The building that I am in is not ventilated and is very very hot. I put a high/low thermometer in and one day the high temp in the building was 114 degrees. Is this the problem? Thanks for any help. Steve W4SEF
Re: [Repeater-Builder] Re: Mastr II drift problem
Thanks Doug and everyone else! THe thing that tipped me off, was the sharpie note on it as RCC UHF - up until yesterday I had never encountered one of these. The topside half of the internal workings are what made me stop and pause when I took the cover off. Quite different from the other MASTR II's I was accustomed to seeing. The 7 rows in the channel element area all squished together, as well as the ICOMs installed in there. Someone asked to check for the crystals, and they are indeed there, the RX is 454.025 but whats unusual is that the TX elements do not have the frequencies listed on them. They do not appear to have been erased by hand, or scraped off - is that commonplace for units like these? Having fun learning about this now - makes me want to fire it up and toy around with it some! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn - Original Message - From: wd8chl To: Repeater-Builder@yahoogroups.com Sent: Wednesday, August 04, 2010 6:50 AM Subject: Re: [Repeater-Builder] Re: Mastr II drift problem On 8/4/2010 9:18 AM, Joe wrote: Sometimes troubles like this are hard to find because you can't be there when it is happening. I have found that a Radio Shack Digital Voltmeter that I have and an old laptop have been handy for such times. I bought an RS DVM with the RS-232 interface on sale a few years ago. I connected it to an old laptop that I have via the RS-232 port and run the simple program that came with the DVM. It records readings over time and stores them to a file. You can then look at the file and see if things have changed over a period of time. I've used it to record AC voltage at sites where I suspected drops in voltage levels and it was helpful to get things fixed. Definitely not lab quality equipment, but very helpful in troubleshooting. This setup could easily watch the 10 volt line or the compensation voltage line. Just thought I'd pass this idea along. 73, Joe, K1ike Really??? What's the model of that DMM? We could use that here! Jim
[Repeater-Builder] MTR-2000 mic jac
is the mic jack pin-out the same on the MTR-2000 repeater as it is on a Maxtrac or GM300 or M1225? Thanks Norm N5NPO
RE: [Repeater-Builder] RCC Exec II
Seems you crossed a few threads there.. RCC Exec II's came as synthesized or crystalled. The crystalled version had a 10 ?? channel board for elements.. the synthesized only had 2 but the rf parts were very different under the duplexer. The Crystalled version looked like a multi freq Exec II with a duplexer added on top. If the elements were erased, they were probably re-stuffed at some point.. maybe not original. The synthesized on had elements that looked like Mastr II Elements.. on large one and one smaller one as I recall. Doug From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of La Rue Communications Sent: Wednesday, August 04, 2010 11:40 AM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Mastr II drift problem Thanks Doug and everyone else! THe thing that tipped me off, was the sharpie note on it as RCC UHF - up until yesterday I had never encountered one of these. The topside half of the internal workings are what made me stop and pause when I took the cover off. Quite different from the other MASTR II's I was accustomed to seeing. The 7 rows in the channel element area all squished together, as well as the ICOMs installed in there. Someone asked to check for the crystals, and they are indeed there, the RX is 454.025 but whats unusual is that the TX elements do not have the frequencies listed on them. They do not appear to have been erased by hand, or scraped off - is that commonplace for units like these? Having fun learning about this now - makes me want to fire it up and toy around with it some! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202
Re: [Repeater-Builder] Hygain in Starkville MS
I'm almost positive Mfj bought them. When I placed a catalog order hygain was one of the catalogs I received. NIMS: 100 200 300 400 700 800 Arrl Extra Class VE HAZ MAT- A O sent from my blackberry mobile device -Original Message- From: Tim tahr...@swtexas.net Sender: Repeater-Builder@yahoogroups.com Date: Wed, 04 Aug 2010 08:02:45 To: Repeater-Builder@yahoogroups.com Reply-To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Hygain in Starkville MS Didn't MFJ buy them? Seems when I was working on my Ham IV, they were one of the places I could order parts from. Tim
Re: [Repeater-Builder] Hygain in Starkville MS
Yes, MFJ bought Hygain. WA Brown - Original Message - From: Gary W. Gibbs To: Repeater-Builder@yahoogroups.com Sent: Wednesday, August 04, 2010 1:53 PM Subject: Re: [Repeater-Builder] Hygain in Starkville MS I'm almost positive Mfj bought them. When I placed a catalog order hygain was one of the catalogs I received. NIMS: 100 200 300 400 700 800 Arrl Extra Class VE HAZ MAT- A O sent from my blackberry mobile device -- From: Tim tahr...@swtexas.net Sender: Repeater-Builder@yahoogroups.com Date: Wed, 04 Aug 2010 08:02:45 -0700 To: Repeater-Builder@yahoogroups.com ReplyTo: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Hygain in Starkville MS Didn't MFJ buy them? Seems when I was working on my Ham IV, they were one of the places I could order parts from. Tim
Re: [Repeater-Builder] Hygain in Starkville MS
http://hamwave.com/cgi-bin/index.cgi?action=printtopicid=2243 Doug On 04/08/2010 18:53:26, Gary W. Gibbs (ke5...@yahoo.com) wrote: I'm almost positive Mfj bought them.When I placed a catalog order hygain was one of the catalogs I received. NIMS: 100 200 300 400 700 800 Arrl Extra Class VE HAZ MAT- A O sent from my blackberry mobile device From: Tim tahr...@swtexas.net Sender: Repeater-Builder@yahoogroups.com Date: Wed, 04 Aug 2010 08:02:45 -0700 To: Repeater-Builder@yahoogroups.com ReplyTo: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Hygain in Starkville MS Didn't MFJ buy them? Seems when I was working on my Ham IV, they were one of the places I could order parts from. Tim [Image] Your email settings: Individual Email|Traditional Change settings via the Web [link: groups.yahoo.com/group/Repeater- Builder/join;_ylc=X3oDMTJlNmZmdTl0BF9TAzk3NDc2NTkwBGdycElkAzEwNDE2OARncnBzcElkAzE3MDUwNjMxMDgEc2VjA2Z0cgRzbGsDc3RuZ3MEc3RpbWUDMTI4MDk0NDQyNw- -] (Yahoo! ID required) Change settings via email: Switch delivery to Daily Digest [link: mailto:repeater-builder-dig...@yahoogroups.com?subject=email Delivery: Digest] | Switch to Fully Featured [link: mailto:Repeater-Builder- fullfeatu...@yahoogroups.com?subject=change Delivery Format: Fully Featured] Visit Your Group [link: groups.yahoo.
[Repeater-Builder] Re: Desoldering MSR-2000 Rcvr and PA PC Boards
Eric Grabowski ejgrabow...@... wrote: I'm not sure about the MSR2000 ... Motorola uses multi-layer PC boards in most of their radios. Yep, they do in the newer ones, especially the portables. I've had experience with 4 and 6 layer boards but this one looks to be just a plain vanilla 2 layer board. The VHF MSR-2000 CD PA PC Board is a 2 layer board. Wattage is of less importance than tip temperature and size. I tend to agree but for soldering/desoldering components to/from large groundplanes wattage does come into play. Well... not really. You need enough wattage to heat the right size tip. A large tip 35/40 watt iron can be kind of a popcorn fart. Like formatting an old MFM Hard Drive, you'd better have some serious extra wait time available. Personally, I've found that I get better results using a little hotter iron for a shorter period of time. The joints look better and the components stay cooler than if I had used a cooler iron for a longer time. Depends on technique... but fast and hot (enough) on/off soldering ( removal) should work pretty well. Others have good luck with the grill and kill sometimes excessive time-on the PC Board soldering technique. YMMV. I think I may have first heard about this technique from building Heathkits back in the day. Also, I believe Skipp mentioned this technique in one of his responses (maybe not on this particular thread though). This is the only thread I've replied to... :-) Skipp wrote: Yes (Motorola used a higher temperature solder on the MSR2000 units) Well, ok then. Since I've got a few more MSR2000 receiver and exciter boards to fix, I guess I'll start hunting for a tool more suitable for the job, i.e., one with a higher temperature and more mass. Thanks to all who responded. 73 and aloha, Eric KH6CQ Cheers Eric, I can use the same large vintage iron for different types of solder and temps if contamination (purity) of the solder is not an issue. It doesn't have to be excessive in size, just enough, for the city. s.
[Repeater-Builder] Re: Help ID'ing this board
Chuck, That's it! Thanks for your help everyone! --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote: 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
[Repeater-Builder] Coax length
Does the length of coax connecting cable between repeater and filters matter? Doug
RE: [Repeater-Builder] Hygain in Starkville MS
MFJ bought both Cushcraft and Hy-GAIN.too bad the didn't grab Telrex before they went under ;-( _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Tommy Dow Sent: Wednesday, August 04, 2010 2:44 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Hygain in Starkville MS MFJ bought Cushcraft. Tom Subject: Re: [Repeater-Builder] Hygain in Starkville MS Yes, MFJ bought Hygain. WA Brown
Re: [Repeater-Builder] MTR-2000 mic jac
No... The mobiles use a RIB box, the MTR is serial direct to the radio. Here's a link to the pinout http://batlabs.com/mtr2kcab.html Dave From: NORM KNAPP nkn...@twowayradio.net To: repeater-builder@yahoogroups.com Sent: Wed, August 4, 2010 12:51:00 PM Subject: [Repeater-Builder] MTR-2000 mic jac is the mic jack pin-out the same on the MTR-2000 repeater as it is on a Maxtrac or GM300 or M1225? Thanks Norm N5NPO
Re: [Repeater-Builder] MTR-2000 mic jac
Norm's question was in reference to the mic jack not the RSS jack. Norm, the MTR2000 mic jack will work fine with most of Motorola's mobile mics except for a select few. Can't give you a concrete answer without knowing which mic you're concerned about. Gary Dave Clausen nn...@yahoo.com wrote: No... The mobiles use a RIB box, the MTR is serial direct to the radio. Here's a link to the pinout http://batlabs.com/mtr2kcab.html Dave From: NORM KNAPP nkn...@twowayradio.net To: repeater-builder@yahoogroups.com Sent: Wed, August 4, 2010 12:51:00 PM Subject: [Repeater-Builder] MTR-2000 mic jac is the mic jack pin-out the same on the MTR-2000 repeater as it is on a Maxtrac or GM300 or M1225? Thanks Norm N5NPO
Re: [Repeater-Builder] Hygain in Starkville MS
Telrex didn't fall into the Mighty Fine Junk category! de Lee K4LJP 73 On Wed, Aug 4, 2010 at 3:21 PM, David Jordan wa3...@comcast.net wrote: MFJ bought both Cushcraft and Hy-GAIN…too bad the didn’t grab Telrex before they went under ;-( -- *From:* Repeater-Builder@yahoogroups.com [mailto: repeater-buil...@yahoogroups.com] *On Behalf Of *Tommy Dow *Sent:* Wednesday, August 04, 2010 2:44 PM *To:* Repeater-Builder@yahoogroups.com *Subject:* Re: [Repeater-Builder] Hygain in Starkville MS MFJ bought Cushcraft. Tom *Subject:* Re: [Repeater-Builder] Hygain in Starkville MS Yes, MFJ bought Hygain. WA Brown -- Always drink upstream from the herd.
[Repeater-Builder] Re: UHF Isolator Wanted
How many do you needI have several to handle up to 300 watts in a triple config with 300 watt dummy loads . bill w4oo . --- In Repeater-Builder@yahoogroups.com, K5IN k...@... wrote: Ok, one last try. I need a UHF isolator and thought I would ask here again. Brian, K5IN
Re: [Repeater-Builder] MTR-2000 mic jac
I am not concerned with programming. I was interested from a PTT and mic audio input stand point, Thanks - Original Message - From: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com To: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com Sent: Wed Aug 04 14:23:44 2010 Subject: Re: [Repeater-Builder] MTR-2000 mic jac No... The mobiles use a RIB box, the MTR is serial direct to the radio. Here's a link to the pinout http://batlabs.com/mtr2kcab.html http://batlabs.com/mtr2kcab.html Dave From: NORM KNAPP nkn...@twowayradio.net To: repeater-builder@yahoogroups.com Sent: Wed, August 4, 2010 12:51:00 PM Subject: [Repeater-Builder] MTR-2000 mic jac is the mic jack pin-out the same on the MTR-2000 repeater as it is on a Maxtrac or GM300 or M1225? Thanks Norm N5NPO
RE: [Repeater-Builder] Hygain in Starkville MS
HAHA, Did you ever have one? The elements used to wear a hole in the boom and fall out at the most un opportune times ;-) _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Lee Pennington Sent: Wednesday, August 04, 2010 3:43 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Hygain in Starkville MS Telrex didn't fall into the Mighty Fine Junk category! de Lee K4LJP 73 On Wed, Aug 4, 2010 at 3:21 PM, David Jordan wa3...@comcast. mailto:wa3...@comcast.net net wrote: MFJ bought both Cushcraft and Hy-GAIN.too bad the didn't grab Telrex before they went under ;-(
Re: [Repeater-Builder] Hygain in Starkville MS
Ouch... D On 04/08/2010 20:42:43, Lee Pennington (localjunkpedd...@gmail.com) wrote: Telrex didn't fall into the Mighty Fine Junk category! de Lee K4LJP 73 On Wed, Aug 4, 2010 at 3:21 PM, David Jordan wa3...@comcast.net [link: mailto:wa3...@comcast.net] wrote: MFJ bought both Cushcraft and Hy-GAIN…too bad the didn’t grab Telrex before they went under ;-( - From: Repeater-Builder@yahoogroups.com [mailto:Repeater-Builder@yahoogroups.com [link: mailto:repeater-buil...@yahoogroups.com]] On Behalf Of Tommy Dow Sent: Wednesday, August 04, 2010 2:44 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Hygain in Starkville MS MFJ bought Cushcraft. Tom Subject: Re: [Repeater-Builder] Hygain in Starkville MS Yes, MFJ bought Hygain. WA Brown -- Always drink upstream from the herd. [Image] Your email settings: Individual Email|Traditional%0 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/
[Repeater-Builder] Re: GMRS Radio
Garbage. Power is limited to 50 watts out of the transmitter. Absolutely no ERP limitations. WalterH WPXP269 Re: [Repeater-Builder] Re: GMRS Radio Bear in mind that GMRS XMT power is limited to 40 watts ERP. Dick
[Repeater-Builder] Re: Mastr II Mobile Repeater?
Close but no cigar. What you describe is MTS, Mobile Telephone Service. All calls were handled by a Bell operator. This was replaced by IMTS, Improved Mobile Telephone Service. These channels had 2 letter designations, like YL or JS. [Interesting note; there used to be a low band phone service, too.] RCC refers to the private entities [non-Bell] that provided mobile telephone service. I worked for one in central NH. That particular one was 454/459 MHz with 2805 Hz overdial. I also did service on another provider's hi-band system. In the 80's, some were fully automatic like the one I worked for, and some still had operators to handle the calls. They were all RCC's. All those systems went away with the advent of cell phones. And the frequencies put up for auction. WalterH --- In Repeater-Builder@yahoogroups.com, bil.isom bil.i...@... wrote: RCC = Radio Common Carrier. The OLD mobile telephone service. Before IMTS (Improved Mobile Telephone Service) and long before cell. BTW Perry Mason used RCC Bill N4XIR --- In Repeater-Builder@yahoogroups.com, La Rue Communications LaRueComm@ wrote: Gentlemen (And Ladies) I have a MASTR II Exec mobile here, I think its a UHF Repeater. I want to confirm with you - but I am curious what RCC stands for. Comb number YS55SSXX88A. Nothing comes up on Google and not sure which Comb spec sheet to look this up with Hall Electronics or here on RB Archives. Thanks for your input! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn
[Repeater-Builder] Re: UHF Isolator Wanted
Single? Dual? Frequency [not just band] Power ratings? Connectors? WalterH --- In Repeater-Builder@yahoogroups.com, K5IN k...@... wrote: Ok, one last try. I need a UHF isolator and thought I would ask here again. Brian, K5IN
Re: [Repeater-Builder] Coax length
Doug Hutchison specialq@ntlworld.com wrote: Does the length of coax connecting cable between repeater and filters matter? Doug As long as the filters are working correctly, the cable length from the duplexers to the radios tx and rx does not matter. Having said that, remember that the shortest length of double shielded coax or HELIAX cable that will reach without kinks or physcial loads (binds) on the connectors should be used. This has nothing to do with impedeance matching, but rather cross talk thru cable leakage. On this same note (and knowing I'm going to stur up a hornets nest) I strongly advise against using the LMR type cables for ANY full duplex system. Any double sheilded cable which uses dissimular metals in the 2 (or more) shields will eventually cause rf noise . Jeff N5SXQ
Re: [Repeater-Builder] Coax length
Doug Hutchison wrote: Does the length of coax connecting cable between repeater and filters matter? Yes - and no. Please read the note about cabling lengths between the repeater and the duplexer in the section on page 4 of the following document: http://www.repeater-builder.com/wacom/wp6xx-vhf-tuning-instructions-remec.pdf Watch for word wrap... Kevin Custer
Re: [Repeater-Builder] Hygain in Starkville MS
At 01:44 PM 8/4/2010, you wrote: MFJ bought Cushcraft. MFJ also owns Hy-Gain, Ameritron, Mirage and Vectronics as well as their brand-name items. Larry Wagoner - N5WLW PRCARC Training Officer PIC - MS SECT ARRL
Re: [Repeater-Builder] Coax length
I will do sir, thank you Kevin. Doug On 04/08/2010 23:04:07, Kevin Custer (kug...@kuggie.com) wrote: Doug Hutchison wrote: Does the length of coax connecting cable between repeater and filters matter? Yes - and no. Please read the note about cabling lengths between the repeater and the duplexer in the section on page 4 of the following document: http://www.repeater-builder.com/wacom/wp6xx-vhf-tuning-instructions-remec. pdf Watch for word wrap... Kevin Custer Yahoo! Groups Links
Re: [Repeater-Builder] Re: Mastr II Mobile Repeater?
And where I lived, channels that did not have a crystal oven installed were designated MT, presumably meaning those channels were empty. --- On Wed, 8/4/10, Walter H walter.howard...@gmail.com wrote: From: Walter H walter.howard...@gmail.com Subject: [Repeater-Builder] Re: Mastr II Mobile Repeater? To: Repeater-Builder@yahoogroups.com Date: Wednesday, August 4, 2010, 11:04 AM Close but no cigar. What you describe is MTS, Mobile Telephone Service. All calls were handled by a Bell operator. This was replaced by IMTS, Improved Mobile Telephone Service. These channels had 2 letter designations, like YL or JS. [Interesting note; there used to be a low band phone service, too.] RCC refers to the private entities [non-Bell] that provided mobile telephone service. I worked for one in central NH. That particular one was 454/459 MHz with 2805 Hz overdial. I also did service on another provider's hi-band system. In the 80's, some were fully automatic like the one I worked for, and some still had operators to handle the calls. They were all RCC's. All those systems went away with the advent of cell phones. And the frequencies put up for auction. WalterH --- In Repeater-Builder@yahoogroups.com, bil.isom bil.i...@... wrote: RCC = Radio Common Carrier. The OLD mobile telephone service. Before IMTS (Improved Mobile Telephone Service) and long before cell. BTW Perry Mason used RCC Bill N4XIR --- In Repeater-Builder@yahoogroups.com, La Rue Communications LaRueComm@ wrote: Gentlemen (And Ladies) I have a MASTR II Exec mobile here, I think its a UHF Repeater. I want to confirm with you - but I am curious what RCC stands for. Comb number YS55SSXX88A. Nothing comes up on Google and not sure which Comb spec sheet to look this up with Hall Electronics or here on RB Archives. Thanks for your input! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202 http://tinyurl.com/2dtngmn
Re: [Repeater-Builder] MTR-2000 mic jac
Sorry Norm... I was deep in programming other stuff when I posted back to you. Must have affected my recognition of plain English text. Dave From: NORM KNAPP nkn...@twowayradio.net To: Repeater-Builder@yahoogroups.com Sent: Wed, August 4, 2010 3:50:08 PM Subject: Re: [Repeater-Builder] MTR-2000 mic jac I am not concerned with programming. I was interested from a PTT and mic audio input stand point, Thanks - Original Message - From: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com To: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com Sent: Wed Aug 04 14:23:44 2010 Subject: Re: [Repeater-Builder] MTR-2000 mic jac No... The mobiles use a RIB box, the MTR is serial direct to the radio. Here's a link to the pinout http://batlabs.com/mtr2kcab.html http://batlabs.com/mtr2kcab.html Dave From: NORM KNAPP nkn...@twowayradio.net To: repeater-builder@yahoogroups.com Sent: Wed, August 4, 2010 12:51:00 PM Subject: [Repeater-Builder] MTR-2000 mic jac is the mic jack pin-out the same on the MTR-2000 repeater as it is on a Maxtrac or GM300 or M1225? Thanks Norm N5NPO
Re: [Repeater-Builder] Re: UHF Isolator Wanted
Hi Walter, Thank you for the response but I purchased one through Jeff Depolo on the repeater builders list. 73 and tnx - Original Message - From: Walter H To: Repeater-Builder@yahoogroups.com Sent: Wednesday, August 04, 2010 2:14 PM Subject: [Repeater-Builder] Re: UHF Isolator Wanted Single? Dual? Frequency [not just band] Power ratings? Connectors? WalterH --- In Repeater-Builder@yahoogroups.com, K5IN k...@... wrote: Ok, one last try. I need a UHF isolator and thought I would ask here again. Brian, K5IN
Re: [Repeater-Builder] Re: UHF Isolator Wanted
Hi Bill, thank you for the response. Jeff Depolo from the list sold me one. If he had not contacted me I certainly would have been in contgact with you. 73 and tnx again. Brian - Original Message - From: Bill To: Repeater-Builder@yahoogroups.com Sent: Wednesday, August 04, 2010 12:41 PM Subject: [Repeater-Builder] Re: UHF Isolator Wanted How many do you needI have several to handle up to 300 watts in a triple config with 300 watt dummy loads . bill w4oo . --- In Repeater-Builder@yahoogroups.com, K5IN k...@... wrote: Ok, one last try. I need a UHF isolator and thought I would ask here again. Brian, K5IN
Re: [Repeater-Builder] Re: Mastr II drift problem
Steve. Make sure you check the jumpers, if you switch the cards. Butch, KE7FEL/r On Wed, Aug 4, 2010 at 6:11 AM, steve w4...@localnet.com wrote: I am using a PLL exciter with a 5C Icom. I am going to check the 10 volt supply. I have a couple of 10 volt cards that I will swap out if needed. Thank you Steve --- In Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com, Mike Morris wa6...@... wrote: At 03:33 PM 08/03/10, you wrote: Hello all, I have having a severe drift problem on my GE Mastr II 2 meter repeater. The transmit freq will drift nearly 2 KHZ over a 5-10 minute period. I have changed exciters and used a different ICOM but no improvement. The building that I am in is not ventilated and is very very hot. I put a high/low thermometer in and one day the high temp in the building was 114 degrees. Is this the problem? Thanks for any help. Steve W4SEF Can you elaborate on the situation? Is it an FM exciter or a phase mod exciter? Is it an EC, a 5C, or 2C Icom? Have you read http://www.repeater-builder.com/ge/m2icoms.html especially the paragraph that starts with Any voltage change on the +10vDC power supply line will change the frequency on the Icom... ?? You will also what to read the page at http://www.repeater-builder.com/tech-info/temperature-compensation.html . An idea on cooled down a building before you set the frequency... I once took a couple of cheapie box fans and setting one to blow in (at floor level) and the second stacked above it to blow out (at the top of the door level), and with a piece of cardboard in between them as an air dam. The cardboard was cut from the side of a large cardboard box that was used to ship a washing machine (ask for one at any appliance store). You could do something similar for the time period needed to set the frequency - your target is 75 to 80 degrees F for about an hour. Look at page 5 of this: http://www.repeater-builder.com/ge/lbi-library/lbi-38505a.pdf Yes, it's a receiver LBI, and you have a drifting transmitter, but the temperature notes apply. Mike WA6ILQ
Re: [Repeater-Builder] Coax length
At 8/4/2010 14:37, you wrote: Doug Hutchison specialq@ntlworld.com wrote: Does the length of coax connecting cable between repeater and filters matter? Doug As long as the filters are working correctly, the cable length from the duplexers to the radios tx and rx does not matter. Having said that, remember that the shortest length of double shielded coax or HELIAX cable that will reach without kinks or physcial loads (binds) on the connectors should be used. This has nothing to do with impedeance matching, but rather cross talk thru cable leakage. Double-shielded cables aren't going to leak enough to be a concern. You do want to keep the length short to minimize loss. BTW, I once measured the isolation between a pair of ordinary RG-58 cables on a VNA from 50 to 500 MHz. Unless the cables were twisted together, I didn't see any coupling between them down to at least -90 dB. When they were twisted together, I think there was ONE frequency around 500 MHz where there was -65 dB coupling. On this same note (and knowing I'm going to stur up a hornets nest) I strongly advise against using the LMR type cables for ANY full duplex system. Any double sheilded cable which uses dissimular metals in the 2 (or more) shields will eventually cause rf noise . No argument here. Bob NO6B
Re: [Repeater-Builder] Coax length
Keep in mind that duplexer manufacturers used to routinely use single shielded (RG-213) cables to make up harnesses. They worked. So Bob's testing doesn't surprise me. Chuck WB2EDV - Original Message - From: n...@no6b.com To: Repeater-Builder@yahoogroups.com Sent: Wednesday, August 04, 2010 10:22 PM Subject: Re: [Repeater-Builder] Coax length At 8/4/2010 14:37, you wrote: Doug Hutchison specialq@ntlworld.com wrote: Does the length of coax connecting cable between repeater and filters matter? Doug As long as the filters are working correctly, the cable length from the duplexers to the radios tx and rx does not matter. Having said that, remember that the shortest length of double shielded coax or HELIAX cable that will reach without kinks or physcial loads (binds) on the connectors should be used. This has nothing to do with impedeance matching, but rather cross talk thru cable leakage. Double-shielded cables aren't going to leak enough to be a concern. You do want to keep the length short to minimize loss. BTW, I once measured the isolation between a pair of ordinary RG-58 cables on a VNA from 50 to 500 MHz. Unless the cables were twisted together, I didn't see any coupling between them down to at least -90 dB. When they were twisted together, I think there was ONE frequency around 500 MHz where there was -65 dB coupling. On this same note (and knowing I'm going to stur up a hornets nest) I strongly advise against using the LMR type cables for ANY full duplex system. Any double sheilded cable which uses dissimular metals in the 2 (or more) shields will eventually cause rf noise . No argument here. Bob NO6B
Re: [Repeater-Builder] MTR-2000 mic jac
No problem. I was trying to connect an ID-8 up to the mic jack instead of going through the rear connector... Anyway, I got the task completed and all is well. Thanks Norm - Original Message - From: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com To: Repeater-Builder@yahoogroups.com Repeater-Builder@yahoogroups.com Sent: Wed Aug 04 19:49:32 2010 Subject: Re: [Repeater-Builder] MTR-2000 mic jac Sorry Norm... I was deep in programming other stuff when I posted back to you. Must have affected my recognition of plain English text. Dave From: NORM KNAPP nkn...@twowayradio.net To: Repeater-Builder@yahoogroups.com Sent: Wed, August 4, 2010 3:50:08 PM Subject: Re: [Repeater-Builder] MTR-2000 mic jac I am not concerned with programming. I was interested from a PTT and mic audio input stand point, Thanks - Original Message - From: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com To: Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Repeater-Builder@yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Sent: Wed Aug 04 14:23:44 2010 Subject: Re: [Repeater-Builder] MTR-2000 mic jac No... The mobiles use a RIB box, the MTR is serial direct to the radio. Here's a link to the pinout http://batlabs.com/mtr2kcab.html http://batlabs.com/mtr2kcab.html http://batlabs.com/mtr2kcab.html http://batlabs.com/mtr2kcab.html Dave From: NORM KNAPP nkn...@twowayradio.net mailto:nknapp%40twowayradio.net To: repeater-builder@yahoogroups.com mailto:repeater-builder%40yahoogroups.com Sent: Wed, August 4, 2010 12:51:00 PM Subject: [Repeater-Builder] MTR-2000 mic jac is the mic jack pin-out the same on the MTR-2000 repeater as it is on a Maxtrac or GM300 or M1225? Thanks Norm N5NPO
[Repeater-Builder] Re: Mastr II drift problem
Hi I checked the 10 volt reg and it was a bit squirrleyI replaced it and it seemed better. But now I can not transmit my tone! I guess I have a jumper not connected. I am trying to find the drawing for the right jumper settings and connections on the 10 volt card. I have the #1 socket grounded. I read that putting a 5C element in any socket will help the stability. Any ideas? Steve --- In Repeater-Builder@yahoogroups.com, Glenn (Butch) Kanvick hotl...@... wrote: Steve. Make sure you check the jumpers, if you switch the cards. Butch, KE7FEL/r On Wed, Aug 4, 2010 at 6:11 AM, steve w4...@... wrote: I am using a PLL exciter with a 5C Icom. I am going to check the 10 volt supply. I have a couple of 10 volt cards that I will swap out if needed. Thank you Steve --- In Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com, Mike Morris wa6ilq@ wrote: At 03:33 PM 08/03/10, you wrote: Hello all, I have having a severe drift problem on my GE Mastr II 2 meter repeater. The transmit freq will drift nearly 2 KHZ over a 5-10 minute period. I have changed exciters and used a different ICOM but no improvement. The building that I am in is not ventilated and is very very hot. I put a high/low thermometer in and one day the high temp in the building was 114 degrees. Is this the problem? Thanks for any help. Steve W4SEF Can you elaborate on the situation? Is it an FM exciter or a phase mod exciter? Is it an EC, a 5C, or 2C Icom? Have you read http://www.repeater-builder.com/ge/m2icoms.html especially the paragraph that starts with Any voltage change on the +10vDC power supply line will change the frequency on the Icom... ?? You will also what to read the page at http://www.repeater-builder.com/tech-info/temperature-compensation.html . An idea on cooled down a building before you set the frequency... I once took a couple of cheapie box fans and setting one to blow in (at floor level) and the second stacked above it to blow out (at the top of the door level), and with a piece of cardboard in between them as an air dam. The cardboard was cut from the side of a large cardboard box that was used to ship a washing machine (ask for one at any appliance store). You could do something similar for the time period needed to set the frequency - your target is 75 to 80 degrees F for about an hour. Look at page 5 of this: http://www.repeater-builder.com/ge/lbi-library/lbi-38505a.pdf Yes, it's a receiver LBI, and you have a drifting transmitter, but the temperature notes apply. Mike WA6ILQ
RE: [Repeater-Builder] Mastr II Mobile Repeater?
John, The unit is a full-duplex RCC (Radiotelephone Common Carrier) mobile telephone, not a repeater. The breakdown of the Combination Number, and a complete list of all LBIs that apply to that radio are found in Publication Index PC18, here: www.repeater-builder.com/ge/product-code-indexes/index-pc18-mastr-exec-ii-r cc-and-imts-mobiles.pdf 73, Eric Lemmon WB6FLY -Original Message- Quoting La Rue Communications laruec...@gmail.com mailto:LaRueComm%40gmail.com : Gentlemen (And Ladies) I have a MASTR II Exec mobile here, I think its a UHF Repeater. I want to confirm with you - but I am curious what RCC stands for. Comb number YS55SSXX88A. Nothing comes up on Google and not sure which Comb spec sheet to look this up with Hall Electronics or here on RB Archives. Thanks for your input! John Hymes La Rue Communications 10 S. Aurora Street Stockton, CA 95202
