Re: [Repeater-Builder] Exec II input problem
What are you using for a signal generator? Some generators leak a lot of signal and might have more than .35 uV of signal radiated on the outside of the coax. When you break the shield path, this higher signal level might get to the radio. Another post mentioned that the RCA connector uses a short pin. I use a BNC to RCA connector with the center pin cut back to match the radio internal connectors to avoid problems in this area. 734 - Jim W5ZIT --- On Thu, 5/28/09, wb8art wb8...@netzero.net wrote: From: wb8art wb8...@netzero.net Subject: [Repeater-Builder] Exec II input problem To: Repeater-Builder@yahoogroups.com Date: Thursday, May 28, 2009, 4:02 PM Wonder if anyone has had this problem and know what the problem is. I am working on a GE Exec II repeater (converted mobile) which has no Comb no. I any case the issue is that if I move around the cable feeding it with a generator I was seeing a change in the recieve. I went directly to the RCA jack, and then found that just making connection with the center pin, I have about 10 to 20db stronger recieved signal than when I push it all the way in making the ground connection. This is a mobile and the RF deck is no. is 19D417075G14 rev A covered by LBI30032E. This shows a option of either non floating ground or floating ground input. This one is a non floating ground one. Might have been changed but I have know knowledge of its history. The RCA jack center pin connects directly with a wire thru a hole to the first helical and I have looked and can see no connection issues and measures a short with an ohm meter. I even reheated the solder joints and no change. Anythoughts would be appreciated. Randy
[Repeater-Builder] Re: Exec II input problem
Hi Jim, I am using a Wavetek 3001. I also have a MVP here with the same helical filter and it doesn't exhibit this. Hence fairly convinced that something is going on with the Exec's filter. It seems like the signal is getting better because were loosing the loss of the filter stage. Update now is that I have resoldered the base of the first coil and ant connections and it has got a lot better. I don't see the change near as much, but moving the cable around still does impact the signal.. The RX freq is 448.625 and sensitivity seems to be .72uV for 20db of quieting versus spec of .5uV. So still fighting it. Randy --- In Repeater-Builder@yahoogroups.com, Jim Brown w5...@... wrote: What are you using for a signal generator? Some generators leak a lot of signal and might have more than .35 uV of signal radiated on the outside of the coax. When you break the shield path, this higher signal level might get to the radio. Another post mentioned that the RCA connector uses a short pin. I use a BNC to RCA connector with the center pin cut back to match the radio internal connectors to avoid problems in this area. 734 - Jim W5ZIT --- On Thu, 5/28/09, wb8art wb8...@... wrote: From: wb8art wb8...@... Subject: [Repeater-Builder] Exec II input problem To: Repeater-Builder@yahoogroups.com Date: Thursday, May 28, 2009, 4:02 PM Wonder if anyone has had this problem and know what the problem is. I am working on a GE Exec II repeater (converted mobile) which has no Comb no. I any case the issue is that if I move around the cable feeding it with a generator I was seeing a change in the recieve. I went directly to the RCA jack, and then found that just making connection with the center pin, I have about 10 to 20db stronger recieved signal than when I push it all the way in making the ground connection. This is a mobile and the RF deck is no. is 19D417075G14 rev A covered by LBI30032E. This shows a option of either non floating ground or floating ground input. This one is a non floating ground one. Might have been changed but I have know knowledge of its history. The RCA jack center pin connects directly with a wire thru a hole to the first helical and I have looked and can see no connection issues and measures a short with an ohm meter. I even reheated the solder joints and no change. Anythoughts would be appreciated. Randy
[Repeater-Builder] Directional repeater antenna question
I am looking for a UHF antenna design to null out transmissions roughly in an easterly direction, but I would like to keep the antenna as unsightly as possible since it's located on a building where it could be easily seen, not on a tower where it wouldn't matter. Any websites out there with ideas I could review? I looked quickly through my antenna book, but didn't see much. It shows a cardioid pattern, but not sure how to make one myself. I just don't have the funds available to purchase one commercially. Any ideas? Thanks... Larry N1MIW
Re: [Repeater-Builder] Directional repeater antenna question
My suggestion would be a Yagi. For repeater use I would suggest a commercial grade but there are several plans available for homebrew... just google homebrew uhf yagi Best Regards, Chris Carruba Co-Admin irc.spidernet.org http://www.spidernet.org CompuTec Data Systems Custom Written Software, Networking, Forensic Data Recovery From: n1miw n1...@cox.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 30, 2009 9:00:57 AM Subject: [Repeater-Builder] Directional repeater antenna question I am looking for a UHF antenna design to null out transmissions roughly in an easterly direction, but I would like to keep the antenna as unsightly as possible since it's located on a building where it could be easily seen, not on a tower where it wouldn't matter. Any websites out there with ideas I could review? I looked quickly through my antenna book, but didn't see much. It shows a cardioid pattern, but not sure how to make one myself. I just don't have the funds available to purchase one commercially. Any ideas? Thanks... Larry N1MIW
Re: [Repeater-Builder] Re: Exec II input problem
Did you check the front end for tin whiskers like someone else posted? They can easily destroy sensitivity. Chuck WB2EDV - Original Message - From: wb8art wb8...@netzero.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 30, 2009 9:28 AM Subject: [Repeater-Builder] Re: Exec II input problem Hi Jim, I am using a Wavetek 3001. I also have a MVP here with the same helical filter and it doesn't exhibit this. Hence fairly convinced that something is going on with the Exec's filter. It seems like the signal is getting better because were loosing the loss of the filter stage. Update now is that I have resoldered the base of the first coil and ant connections and it has got a lot better. I don't see the change near as much, but moving the cable around still does impact the signal.. The RX freq is 448.625 and sensitivity seems to be .72uV for 20db of quieting versus spec of .5uV. So still fighting it. Randy
[Repeater-Builder] Motorola CDM 1250
Good morning All I have several CDM 1250's that need programing. I received every thing with the CDM's. Service manuals Programing Software Programing cable Rib etc The only thing I did not receive was the instructions for using the software. Software fires up fine and I have been able to program 1 channel into a 64 channel radio. I have tried to add other channels to no avail. The information shows up in the tree display and when I tell it to write to the radio, software indicates that it has loaded the channels but the CDM display only shows the first channel. What am I doing wrong? Ralph, W7HSG
[Repeater-Builder] Re: Exec II input problem
Yes I have and I know they can be hard to see. But don't think thats it but will be tearing it a apart again and clean and resolder as that did seem to make progress with the issue. At first with the problem I could get the sensistivity up to .35 better than spec with pulling out the RCA jack to only the center pin connected now that doesn't help much so why I think it was bypassing the loss of the filter stage and the fact that possible resoldering the coil base improved the issue concurs with my thought. Randy --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote: Did you check the front end for tin whiskers like someone else posted? They can easily destroy sensitivity. Chuck WB2EDV - Original Message - From: wb8art wb8...@... To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 30, 2009 9:28 AM Subject: [Repeater-Builder] Re: Exec II input problem Hi Jim, I am using a Wavetek 3001. I also have a MVP here with the same helical filter and it doesn't exhibit this. Hence fairly convinced that something is going on with the Exec's filter. It seems like the signal is getting better because were loosing the loss of the filter stage. Update now is that I have resoldered the base of the first coil and ant connections and it has got a lot better. I don't see the change near as much, but moving the cable around still does impact the signal.. The RX freq is 448.625 and sensitivity seems to be .72uV for 20db of quieting versus spec of .5uV. So still fighting it. Randy
Re: [Repeater-Builder] Re: Exec II input problem
Sometimes the conductivity of the tuning screws to the casting becomes questionable. There is a conductive grease that a lot of GE shops used to eliminate that issue. Chuck - Original Message - From: wb8art wb8...@netzero.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 30, 2009 11:06 AM Subject: [Repeater-Builder] Re: Exec II input problem Yes I have and I know they can be hard to see. But don't think thats it but will be tearing it a apart again and clean and resolder as that did seem to make progress with the issue. At first with the problem I could get the sensistivity up to .35 better than spec with pulling out the RCA jack to only the center pin connected now that doesn't help much so why I think it was bypassing the loss of the filter stage and the fact that possible resoldering the coil base improved the issue concurs with my thought. Randy
[Repeater-Builder] 209 ft. of 1/2 new Andrews Heliex Hard Line with matching Andrews N connectors
209 ft. coil of un-used Andrew 1/2 inch Heliax Coaxial Cable per Foot Price new : $3.44 per foot. ANDREW LDF4-50A Heliax coaxial Price per Foot Cu-clad Al center conductor w/low-loss closed cell foam dielectric, annular corrugated Cu outer conductor, type IIIA jacket. Nominal impedance 50 ohm; velocity of propagation 88%; outer diameter .63; solid Cu shield. For Sale at $400.00 (will not cut cable) Also, 2 ea. Un-used Mating Andrews NEW F4PHF-C Type N FEMALE CONNECTORS in original Andrews boxes N Female http://antennasystems.com/Merchant2/merchant.mvc?Screen=PRODProduct_Co\ de=F4PNF-CCategory_Code=FSJ4con Code:F4PNF-C Price new: $35.88 ea. X 2= $71.76 For Sale at $50.00 (Sold with above cable only. Will not sell separate) TOTAL FOR UN-USED CABLE MATING END CONNECTORS = $450.00 (US funds only payable with a US Postal Money order). Price does not included shipping, packing and insurance from 34667. Pick-up can be arranged. Located in Tampabay, Florida area. (Bring cash or US Postal Money Order only)! 73, Dennis Griffin - W4DG
[Repeater-Builder] Re: Purc 5000
Randy, Let me know what part of the manual you need, I may be able to help. The only part I am familiar with on this is the Ultra High Stability Oscillator for the other bands, not 940MHz. But it looks like they use a doubler somewhere so the VCO is at 1/2 the final output frequency. As far as I can see the amps for 940MHz are the same as the MSF5000. If you study the schematics you can see the design progress from model to model. It has similar design parts of a Micor, Syntor, Syntor X. Presently using one low band UHSO to drive a Master II low band exciter for 6 meters. 73, Jay no2g --- In Repeater-Builder@yahoogroups.com, Randy Elliott jan...@... wrote: Greetings to the Group I have a Purc 5000 paging transmitter that I am trying to convert to 900mhz. It is programmed via eprom to TX frequency of 934.mhz. I have a code plug eprom burned for it but I have not installed it yet. When I connect the station to power it goes into transmit right away. It has 2 PA's in the cabinet but only one is connected. Output was about 50 watts but I managed to locate the PA power level pot and have turned down the output to 15 watts until I can figure this beast out. I don't have much documentation on it. And what I have been able to find here and on other parts of the internet is mostly based on the MSF 5000. What I do have is the model # C85JLB1106ASP02, the purc control board # TLN2774A03, Tone Remote Control Board # TLN2775A05, there is a 3rd large board that I could not find any number on, and 2 PA'S model 1242 and 1212. (1242 is the one connected) If any one can help with any documentation or experience with this station it would be muchly appreciated. Randy VE3JPU
Re: [Repeater-Builder] Motorola CDM 1250
You have to set your zone first to establish how many channels are in the zone then you can program frrqs for each zone. Sent from my Verizon Wireless BlackBerry -Original Message- From: Ralph S. Turk w7...@comcast.net Date: Sat, 30 May 2009 15:11:05 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola CDM 1250 Good morning All I have several CDM 1250's that need programing. I received every thing with the CDM's. Service manuals Programing Software Programing cable Rib etc The only thing I did not receive was the instructions for using the software. Software fires up fine and I have been able to program 1 channel into a 64 channel radio. I have tried to add other channels to no avail. The information shows up in the tree display and when I tell it to write to the radio, software indicates that it has loaded the channels but the CDM display only shows the first channel. What am I doing wrong? Ralph, W7HSG
Re: [Repeater-Builder] Motorola CDM 1250
That software is not designed for end users. It really is dealer software so it is not very intuitive. Try f1 for help. Good luck, Alan Sent from my Verizon Wireless BlackBerry -Original Message- From: Ralph S. Turk w7...@comcast.net Date: Sat, 30 May 2009 15:11:05 To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola CDM 1250 Good morning All I have several CDM 1250's that need programing. I received every thing with the CDM's. Service manuals Programing Software Programing cable Rib etc The only thing I did not receive was the instructions for using the software. Software fires up fine and I have been able to program 1 channel into a 64 channel radio. I have tried to add other channels to no avail. The information shows up in the tree display and when I tell it to write to the radio, software indicates that it has loaded the channels but the CDM display only shows the first channel. What am I doing wrong? Ralph, W7HSG
RE: [Repeater-Builder] Directional repeater antenna question
I am looking for a UHF antenna design to null out transmissions roughly in an easterly direction, but I would like to keep the antenna as unsightly as possible since it's located on a building where it could be easily seen, not on a tower where it wouldn't matter. Any websites out there with ideas I could review? I looked quickly through my antenna book, but didn't see much. It shows a cardioid pattern, but not sure how to make one myself. I just don't have the funds available to purchase one commercially. Any ideas? Thanks... Larry N1MIW A little confused on the first sentance - you want an antenna that only covers in one direction, or only nulls in one direction? I think you're asking for the latter, i.e. you want something with 270ish degrees of coverage. How much of a null do you need? 10 dB? 20 dB? More? If I did read it right and you're looking for 270 degrees of coverage, probably the best you will be able to do is to use an omni or quasi-omni (like an offset dipole array) and use the mast, tower, or whatever to create a cardiod-ish pattern to attenuate the signal to the east. But, depending on the geometry of the structure behind the antenna, the null may be as little as a few dB. If this is on a rooftop, an omni located off one side of, and below the roof of, a mechanical room or chiller/cooling tower or similar obstruction to help shield the antenna in one direction may be an alternative. Building a mostly-omnidirectional antenna with a single, narrow null in the pattern 10 dB deep or more isn't very easy. With phased antennas it's possible, but given the desire to keep it on the low-down, that's probably not practical, especially on UHF where a small phasing or mechanical error (such as flexing in the wind) is going to change the pattern and degrade the theoretical null significantly when trying to use two (or more) phased omnis. If you're looking for something much more narrow than 270 degrees (actually well under 180 degrees), some common UHF directional antennas include: Yagi - good for a beamwidth of anywhere from about 120 degrees on down depending on the number of elements. Not very clean pattern, typically lots of sidelobes. Log periodic - beamwidth varies with number of elements like a yagi, but much cleaner pattern. Logs typically have less gain than a yagi of equal boom length, but the cleaner pattern is often advantageous when you're trying to attenuate off-axis signals. Corner reflector, parabolic reflector, or truncated parabolic - beamwidth usually in the range of maybe 60 degrees on down depending on the size/geometry of the reflector. Typically a cleaner pattern than yagis. On VHF/UHF, the driven element is often a dipole, or a dipole with a reflector (a la a two-element yagi aimed toward the reflector). Panels - available for a range of beamwidths, typically 160 degrees or less, often with a good pattern. Quasi-flat design makes them less conspicuous than yagis or logs. Often enclosed in a fiberglass, FRP, or similar radome. Reflector can either be a plate (flat or bent), screen, or screen embedded in an insulator (like fiberglass, similiar to a fiberglass satellite dish). The radiator can be a dipole, log cell(s), etc. depending on the desired pattern, beamwidth, bandwidth, etc. If you want to experiment with one of the above, a corner reflector is probably the easiest of all of the above to design and build, both mechanically and electrically; you should be able to find recipies in any half-decent antenna book. --- Jeff WN3A
Re: [Repeater-Builder] Motorola CDM 1250
Is there a method to clone from one radio to the other? - Original Message - From: wa...@earthlink.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 30, 2009 8:36:37 AM GMT -07:00 U.S. Mountain Time (Arizona) Subject: Re: [Repeater-Builder] Motorola CDM 1250 You have to set your zone first to establish how many channels are in the zone then you can program frrqs for each zone. Sent from my Verizon Wireless BlackBerry From : Ralph S. Turk Date : Sat, 30 May 2009 15:11:05 + (UTC) To : Repeater-Builder@yahoogroups.com Subject : [Repeater-Builder] Motorola CDM 1250 Good morning All I have several CDM 1250's that need programing. I received every thing with the CDM's. Service manuals Programing Software Programing cable Rib etc The only thing I did not receive was the instructions for using the software. Software fires up fine and I have been able to program 1 channel into a 64 channel radio. I have tried to add other channels to no avail. The information shows up in the tree display and when I tell it to write to the radio, software indicates that it has loaded the channels but the CDM display only shows the first channel. What am I doing wrong? Ralph, W7HSG
[Repeater-Builder] Fwd: REPEATER,ANDREW FSJ4 50B HELIAX,other related stuff
Brand New: 230 Ft. Andrew FSJ4-50B 1/2 in. HELIAX (hardline) Stored indoors, protective caps on ends. Pick up only, W.P.Bch area. $400.00 Firm.CURRENTLY PRICED @ $3.85 per ft. from RF Parts CO 70 cm. Repeater, Plug 'n' Play G.E. MASTR II, 40watts, NHRC-1 repeater controller, Motorola 4 can Duplexer. Has been on the air for the last 5 years with no issues, includes manuals Pickup only, W.P.Bch area, $500.00 or any interesting trades. NEEDED: CDE AR-10 or AR-22XL 4 wire rotator controller Have 8 wire Ham-M controller for TRADE or sell for 25 bucks, shipped. No Pay Pal, my info is correct on QRZ.com. TNX de Lee K4LJP 73 . -- Smart pills are placebos, you can't fix stupid. -- Smart pills are placebos, you can't fix stupid.
Re: [Repeater-Builder] Motorola CDM 1250
I can not find where I set the zone/channels. - Original Message - From: wa...@earthlink.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 30, 2009 8:36:37 AM GMT -07:00 U.S. Mountain Time (Arizona) Subject: Re: [Repeater-Builder] Motorola CDM 1250 You have to set your zone first to establish how many channels are in the zone then you can program frrqs for each zone. Sent from my Verizon Wireless BlackBerry From : Ralph S. Turk Date : Sat, 30 May 2009 15:11:05 + (UTC) To : Repeater-Builder@yahoogroups.com Subject : [Repeater-Builder] Motorola CDM 1250 Good morning All I have several CDM 1250's that need programing. I received every thing with the CDM's. Service manuals Programing Software Programing cable Rib etc The only thing I did not receive was the instructions for using the software. Software fires up fine and I have been able to program 1 channel into a 64 channel radio. I have tried to add other channels to no avail. The information shows up in the tree display and when I tell it to write to the radio, software indicates that it has loaded the channels but the CDM display only shows the first channel. What am I doing wrong? Ralph, W7HSG
[Repeater-Builder] DECIBLE Products 440MHz. Duplexer
FS: Decibel Products Model DB4071 UHF Duplexer. All Type N female connectors. Standard 5Mhz. split. 16w X 10d X 3/5h. $ 100.00 + shipping insurance from 34667. email w...@tampabay.rr.com mailto:w...@tampabay.rr.com
[Repeater-Builder] MOTOROLA 2-WAY (12) MANUALS
FS: I have twelve (12) MOTOROLA 2-way Radio Service Maintenance MANUALS for VHF UHF. Will not separate! $36.00 + USPS MEDIA mail postage. Email w...@tampabay.rr.com mailto:w...@tampabay.rr.com .
Re: [Repeater-Builder] Motorola CDM 1250
Yes but if the code plug versions are different it may not work. You may have to read and rewrite if that is the case. The clone icon if I remember is on the top pf the software window. These are not simple to program. There is no software manual except F1 key. Mot. Assumes this is used by an experienced dealer. Alan Sent from my Verizon Wireless BlackBerry -Original Message- From: Ralph S. Turk w7...@comcast.net Date: Sat, 30 May 2009 15:46:46 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Motorola CDM 1250 Is there a method to clone from one radio to the other? - Original Message - From: wa...@earthlink.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 30, 2009 8:36:37 AM GMT -07:00 U.S. Mountain Time (Arizona) Subject: Re: [Repeater-Builder] Motorola CDM 1250 You have to set your zone first to establish how many channels are in the zone then you can program frrqs for each zone. Sent from my Verizon Wireless BlackBerry From : Ralph S. Turk Date : Sat, 30 May 2009 15:11:05 + (UTC) To : Repeater-Builder@yahoogroups.com Subject : [Repeater-Builder] Motorola CDM 1250 Good morning All I have several CDM 1250's that need programing. I received every thing with the CDM's. Service manuals Programing Software Programing cable Rib etc The only thing I did not receive was the instructions for using the software. Software fires up fine and I have been able to program 1 channel into a 64 channel radio. I have tried to add other channels to no avail. The information shows up in the tree display and when I tell it to write to the radio, software indicates that it has loaded the channels but the CDM display only shows the first channel. What am I doing wrong? Ralph, W7HSG
Re: [Repeater-Builder] Motorola CDM 1250
Its called add conventional personalities to zone. If you are in conventional mode. If operating LTR then you would set a zone for LTR and within you would set those parameters for that particular system. Alan Sent from my Verizon Wireless BlackBerry -Original Message- From: Ralph S. Turk w7...@comcast.net Date: Sat, 30 May 2009 16:32:52 To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Motorola CDM 1250 I can not find where I set the zone/channels. - Original Message - From: wa...@earthlink.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, May 30, 2009 8:36:37 AM GMT -07:00 U.S. Mountain Time (Arizona) Subject: Re: [Repeater-Builder] Motorola CDM 1250 You have to set your zone first to establish how many channels are in the zone then you can program frrqs for each zone. Sent from my Verizon Wireless BlackBerry From : Ralph S. Turk Date : Sat, 30 May 2009 15:11:05 + (UTC) To : Repeater-Builder@yahoogroups.com Subject : [Repeater-Builder] Motorola CDM 1250 Good morning All I have several CDM 1250's that need programing. I received every thing with the CDM's. Service manuals Programing Software Programing cable Rib etc The only thing I did not receive was the instructions for using the software. Software fires up fine and I have been able to program 1 channel into a 64 channel radio. I have tried to add other channels to no avail. The information shows up in the tree display and when I tell it to write to the radio, software indicates that it has loaded the channels but the CDM display only shows the first channel. What am I doing wrong? Ralph, W7HSG
RE: [Repeater-Builder] Motorola CDM 1250
Ralph, After you have programmed the personalities you want, then go down to the personalities assignment to zone. Click on the right-hand column heading. Right-click again and again on the first entry there, until you have added enough lines to insert your personalities. Then on each line, click the drop-down arrow and select which personality you want in that position. All of this information is in the tutorial on the CD. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Ralph S. Turk Sent: Saturday, May 30, 2009 8:11 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola CDM 1250 Good morning All I have several CDM 1250's that need programing. I received every thing with the CDM's. Service manuals Programing Software Programing cable Rib etc The only thing I did not receive was the instructions for using the software. Software fires up fine and I have been able to program 1 channel into a 64 channel radio. I have tried to add other channels to no avail. The information shows up in the tree display and when I tell it to write to the radio, software indicates that it has loaded the channels but the CDM display only shows the first channel. What am I doing wrong? Ralph, W7HSG
RE: [Repeater-Builder] MOTOROLA 2-WAY (12) MANUALS
It would be very helpful if you listed the complete publication number, with the letter suffix, and a brief description of the model and frequency range of each manual. Otherwise, it's a pig in a poke. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of w4dg.geo Sent: Saturday, May 30, 2009 9:55 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] MOTOROLA 2-WAY (12) MANUALS FS: I have twelve (12) MOTOROLA 2-way Radio Service Maintenance MANUALS for VHF UHF. Will not separate! $36.00 + USPS MEDIA mail postage. Email w...@tampabay.rr.com
Re: [Repeater-Builder] Re: Exec II input problem [1 Attachment]
At 5/30/2009 08:06, you wrote: Yes I have and I know they can be hard to see. But don't think thats it but will be tearing it a apart again and clean and resolder as that did seem to make progress with the issue. At first with the problem I could get the sensistivity up to .35 better than spec with pulling out the RCA jack to only the center pin connected now that doesn't help much so why I think it was bypassing the loss of the filter stage and the fact that possible resoldering the coil base improved the issue concurs with my thought. Randy For those who've never actually seen tin whiskers, I took a pic of the helical resonator cover plate of the last MVP I had to service for this problem. Bob NO6B
Re: [Repeater-Builder] Re: Exec II input problem
There is another good photo of MastrII whiskers at: http://www.repeater-builder.com/ge/mastrIIcasting.html 73, Joe, K1ike n...@no6b.com wrote: For those who've never actually seen tin whiskers, I took a pic of the helical resonator cover plate of the last MVP I had to service for this problem. Bob NO6B
[Repeater-Builder] WTB Mastr II PLL Exciter
I shoulda picked one up at Dayton... I'm working on a 2M repeater and have replaced the multiplier exciter with a PLL exciter. I love these things-- very clean output and one tuning coil. The PLL exciter I had on hand has no audio processor module, so I'm looking for a complete PLL exciter. Then I'll have spare parts on hand too. Reply to my call at arrl dot net. Thanks! Laryn K8TVZ
