[Repeater-Builder] Re: Unidentified EF Johnson Repeater
And what happens when they realize the digital narrow band stuff works like poo-poo? s. Nate Duehr n...@... wrote: That is correct. They're converting to digital narrowband per Air Force/NTIA rules, so it appears that the analog gear is trickling out to the used market... -- Nate Duehr, WY0X n...@... On Fri, 18 Sep 2009 12:39 -0500, Robert McNeill rob...@... wrote: I believe that is a Civil Air Patrol split⦠_ From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of Lee Pennington Sent: Friday, September 18, 2009 12:28 PM To: Repeater Builders Yahoo Group Subject: [Repeater-Builder] Unidentified EF Johnson Repeater Gentlmen; Need help in Identifying Johnson Vhf repeater... No model #, or serial # found on unit. I recently acquired a working EF Johnson VHF homebrew repeater, has an odd ball split. Tx freq. 148.150,..Rx freq. 143.900.
[Repeater-Builder] Aerotron VHF rpt.
I know there is an Aerotron group, but it hasn't had any activity for a long time. I thought I might get an answer here. I have a mint Aerotron VHF Repeater made of a 60BR1 Receiver and a 60BT100 Transmitter. Has anyone ever seen one of these successfully moved to a lower ham pair such as 145.450/144.850? I'd also consider buying spare manuals if anyone has them. Thanks, Terry WX3M wx3m.te...@gmail.com 301-707-3412
RE: [Repeater-Builder] Aerotron VHF rpt.
I used to work on that stuff. All the rigs would go anywhere well almost. Get the manuals even the mobile manuals as the repeater was much like the mastr II in that all the boards in rptr were the same as the mobile. Get some xtals and tune it up. Any section that does not tune well ot tops out on the coil look at the schematic for the * next to the caps that are frequency dependant and try a new cap a few PF off from there. My manuals are in storage but next time I get to them I will see what I have.. -Kevin -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of terry_wx3m Sent: Saturday, September 19, 2009 9:46 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Aerotron VHF rpt. I know there is an Aerotron group, but it hasn't had any activity for a long time. I thought I might get an answer here. I have a mint Aerotron VHF Repeater made of a 60BR1 Receiver and a 60BT100 Transmitter. Has anyone ever seen one of these successfully moved to a lower ham pair such as 145.450/144.850? I'd also consider buying spare manuals if anyone has them. Thanks, Terry WX3M wx3m.te...@gmail.com 301-707-3412 Yahoo! Groups Links
RE: [Repeater-Builder] Re: Anybody have some REALLY old Moto manuals?
I have a manual for the old 150 - 174 MC T-Power that has the diagram for Carrier and Dual Squelch. Cannot find any reference to what the PL tones are but I would assume that they have not changed over the years. David -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of burkleoj Sent: Friday, September 18, 2009 9:35 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Anybody have some REALLY old Moto manuals? Mike and Mike, I was the one who had one of the original invitations from Neil to come over and I asked Neil if Chris was welcome to join me. I just looked through the 30D manual set and there was no mention of PL Tones. But if anybody needs Dynamotor information, that I can help with. I am off to look through the 80D manuals now. Hopefully I find something there. I should of grabbed the manual on the first generation of UHF community repeaters that Motorola built. Joe --- In Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com, k7...@... wrote: Hi Joe, I was not sure who all went over and got all his stuff. I know Chris went over and got a bunch of hardware but If I know Chris he would never take Motorola manuals unless there was GE manuals. Mike From: Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com [mailto:Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com] On Behalf Of burkleoj Sent: Thursday, September 17, 2009 11:09 PM To: Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com Subject: [Repeater-Builder] Re: Anybody have some REALLY old Moto manuals? Mike and Mike, I have a Motorola twin coffin 30D set of manuals out of Neil's collection. I will have a look tomorrow and see what I can find out for you as to what is listed for PL Tones. Joe - WA7JAW --- In Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com , k7pfj@ wrote: Hi Mike, I would say Neil Mckie WA6KLA should help you out with any OLD Motorola manual that they have ever printed since 1948. But he has been locked up for several years and all of his stuff he gave away. Mike Mullarkey K7PFJ From: Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com [mailto:Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of Mike Morris WA6ILQ Sent: Thursday, September 17, 2009 7:09 PM To: Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com yahoogroups.com mailto:Repeater-Builder%40yahoogroups.com Subject: [Repeater-Builder] Anybody have some REALLY old Moto manuals? If so, I need a favor. The first implementation of PL used about 20 tones. The 32-tone standard list didn't come until later. Does anybody have a copy of that early tone list? It would have been somewhere in the 1950-1955 time frame. Thanks in advance. Mike WA6ILQ No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.104/2379 - Release Date: 09/17/09 15:55:00 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.104/2379 - Release Date: 09/17/09 15:55:00
Re: [Repeater-Builder] Unidentified EF Johnson Repeater
The radio indeed is a mobile radio, designed for trunk mount usage. the control cable which used to go to the dash mounted control unit now connrcts to a home brew controller. There is an off/on switch and voume control pot and several LED's, only two of which that do any thing. There is no squelch pot, which I wish to install once I am able to ID the the rig, and find the proper schematic. I certainly appreciate all the feedback received so far. And, Yes, the rig used to belong to a local CAP squadron. de Lee K4LJP 73 On Fri, Sep 18, 2009 at 5:11 PM, radio5...@aol.com wrote: Sound like maybe a base station that has been converted. If it has volume and Squelch controls on the radio, it is probably a Fleetcom 2. If it doesn't, its a Transcom 2. Same cystals as the PPL series. Lift the top cover, receiver and transmitter should be separate. What color is the radio? -Original Message- From: Lee Pennington localjunkpedd...@gmail.com To: Repeater-Builder@yahoogroups.com Sent: Fri, Sep 18, 2009 1:56 pm Subject: Re: [Repeater-Builder] Unidentified EF Johnson Repeater Lance, There iis only one unit in the cabinet, It does have the pullout shelf similar to the GE Mastr II. This rig has two channel capability, (only one is used) w/ *common xtals*, no modules or icoms as some like to call them. With a manual, new xtals, and a tx rx retune, it should be a piece of cake. Sorry, no can do on the pics. de Lee K4LJP 73 On Fri, Sep 18, 2009 at 1:46 PM, Captainlance captainla...@opto nline.netcaptainla...@optonline.net wrote: *Check the back of each chassis, receiver and transmitter for the applicable model numbers, the radio you have is probably a CR1000, CR1010, or CR1100* *made up of basically 2 mobile radios hung on pull out rails. The later ones have the chassis in pull out boxes, sort of like small rack units.* *I may have what you need if you can give me more info, or a photo of the insides...* *Lance N2HBA ( 20+ year EJF dealer).* - Original Message - *From:* Robert McNeill rob...@ncbfi.org *To:* Repeater-Builder@yahoogroups.com *Sent:* Friday, September 18, 2009 12:39 PM *Subject:* RE: [Repeater-Builder] Unidentified EF Johnson Repeater I believe that is a Civil Air Patrol split… -- *From:* Repeater-Builder@yahoogroups.com [mailto: repeater-buil...@yahoogroups.com] *On Behalf Of *Lee Pennington *Sent: * Friday, September 18, 2009 12:28 PM *To:* Repeater Builders Yahoo Group *Subject:* [Repeater-Builder] Unidentified EF Johnson Repeater Gentlmen; Need help in Identifying Johnson Vhf repeater... No model #, or serial # found on unit. I recently acquired a working EF Johnson VHF homebrew repeater, has an odd ball split. Tx freq. 148.150,..Rx freq. 143.900. Unit Xmits 120 watts w/good audio, receiver is fairly sharp. Encodes and decodes, 141.3PL tone. Homebrew controller with courtesy tone only, No cw ID. Unit appears to be a mobile radio in a Johnson cabinet w/ EFJohnson P.S. The cabinet is about 30 X 22 x 11 inches The mobile radio measures about 15 x 8 x 3 inches. The vintage is 1982... Need to ID Unit, ( PPL 6050 ???) help, and manual if possible. Are xtals still available? Thanks in advance for any assistance, de Lee K4LJP 73 -- Always drink upstream from the herd. -- =0 A No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.105/2380 - Release Date: 09/18/09 07:49:00 -- Always drink upstream from the herd. -- Always drink upstream from the herd.
[Repeater-Builder] CAP Mastr II Repeaters
There should a number of Civil Air Patrol Mastr II VHF repeaters coming into the market-these are all LOW split and the newest GE Mastr II's available since the CAP has GE open up the Mastr II line and build them specifically for CAP, if you are looking for a great VHF repeater keep your eyes open for these and if you have any contact me off list, I am looking for two or three. Andy W6AMS Andrew Seybold aseyb...@andrewseybold.com mailto:aseyb...@andrewseybold.com 315 Meigs Road, Suite A-267 Santa Barbara, CA 93109 805-898-2460 office 805-898-2466 fax www.andrewseybold.com http://www.andrewseybold.com image001.jpg
[Repeater-Builder] MSR 2000 Repeater
I have gotten a MSR2000 repeater working with the the PL card in it.I do not want to use this card as I have installed a TS-32 board. When I remove the PL card, both transmit and receive are disabled. What do I jumper to stop this from happening. It blocks me from using the meter jack for the transmitter. Howard K2IMO
[Repeater-Builder] UHF Duplexers
Just about finished with the Mastr II UHF repeater. I've run into a problem with the duplexers. They are a set of WACOM BpBr Model WP678. I am putting 48W into them, but only 18.5W out. I believe this should be better. RX will open squelch at around .2-.3 uV through the cans (this I know is OK). Could there be a problem with the TX side of the cans? Terry KM5UQ
Re: [Repeater-Builder] Aerotron VHF rpt.
Our club has had an Aerotron MPAC VHF repeater on 145.29Mhz for many years and it has worked well. It was ordered from Aerotron for our specific frequency. It it is serving us well. The main problem that we have had is the PA stage burning up. It does not like to do 100 watts in ham use. Ham use can be more taxing than commercial use, especially during long nets or events. We solved this problem by turning the PA down to about 60 watts. The problem was that heat would delaminate the traces from the PA circuit board. I just bought an Aerotron MPAC manual off eBay for less than $10.00 including shipping, so look around. I also just bought another Aerotron VHF MPAC off eBay and am waiting for it to arrive. By coincidence, it is on 146.775 and that is the frequency of our other club repeater. I'll be retiring the Spectrum Communications SCR-77 repeater we now use on that frequency and use Aerotron MPAC repeaters on both frequencies. I have a ratty MPAC for spare parts, but most of the parts in the MPAC are generic off-the-shelf stuff. My friend who has a 2way shop has a fleet of Aerotron stuff still on the air, so he is a good resource for help. 73, Joe, K1ike terry_wx3m wrote: I know there is an Aerotron group, but it hasn't had any activity for a long time. I thought I might get an answer here. I have a mint Aerotron VHF Repeater made of a 60BR1 Receiver and a 60BT100 Transmitter. Has anyone ever seen one of these successfully moved to a lower ham pair such as 145.450/144.850? I'd also consider buying spare manuals if anyone has them. Thanks, Terry WX3M wx3m.te...@gmail.com 301-707-3412
[Repeater-Builder] Re: MSR 2000 Repeater
When you remove the PL Module from the back plane you lose the reverse burst CTCSS (PL) function. What advantage would you have/get from using a TS-32 tone board? You can download the external controller on an MSR-2000 repeater information from the www.radiowrench.com/sonic web page and it will tell you how to make the repeater operate carrier squelch. First off... there are two jumpers on the Squelch Gate Module that need to be moved over to carrier squelch or the TS-32 needs to source the proper signals to the SQM so it will operate. s. Howard Klino hkl...@... wrote: I have gotten a MSR2000 repeater working with the the PL card in it.I do not want to use this card as I have installed a TS-32 board. When I remove the PL card, both transmit and receive are disabled. What do I jumper to stop this from happening. It blocks me from using the meter jack for the transmitter. Howard K2IMO
RE: [Repeater-Builder] UHF Duplexers
Terry, Is your repeater in the 70cm Amateur band? If so, and your WP-678 duplexer was not originally tuned for that band, that may be where the problem lies. I have a Remec-Wacom WP-678 duplexer that I bought from the factory for GMRS service, and its insertion loss at the transmit frequency is 1.14 dB, equivalent to 38.5 watts out for 50 watts in. Your duplexer's measured insertion loss exceeds 4 dB. Most Wacom UHF commercial-band duplexers will tune down into the Amateur band, but not all of them. It appears that your duplexer is tuned improperly, or it may be impossible to tune it to your pair. What method and equipment are you using to tune the duplexer? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of terry dalpoas Sent: Saturday, September 19, 2009 2:11 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] UHF Duplexers Just about finished with the Mastr II UHF repeater. I've run into a problem with the duplexers. They are a set of WACOM BpBr Model WP678. I am putting 48W into them, but only 18.5W out. I believe this should be better. RX will open squelch at around .2-.3 uV through the cans (this I know is OK). Could there be a problem with the TX side of the cans? Terry KM5UQ
[Repeater-Builder] a strange unexplainable desense issue
Hey guys, Alright, i have a very strange problem on 220. Let me explain the equipment. The repeater is a hipro r1, with an arcom rc210 controller, hustler 220 antenna, and wacom duplexer. I'm getting this very strange feedback in to the 220 receiver. The problem only occurs when the 220 transmitter is keyed. We checked the duplexer and it appears perfect on a service monitor. After having gotten the repeater back from hipro, we measured it, and it shows up -.71 KHZ off frequencyy, in terms of the transmitted signal. To me this seems way off, but according to hipro it's within spec. I let the crystals warm up for a good 10 minutes before doing this test. For cable between the receiver and the duplexer, and the transmitter and the duplexer, it's rg142. Any ideas guys? I've been given a theory that it may be the antenna, since they are not that good at repeater service. The antenna is mounted on the roof of a hospital. Now, let me explain another problem. I have a hipro r1 uhf machine, and it's showing up about the same amount off frequency. There are 2 things happening when that is keyed up, it's keying up our 900 repeater at the same sight, and also causing the squelch on the hospital's security repeater to chrchunk. Any ideas? I'm at a loss. Thanks, Jed
RE: [Repeater-Builder] a strange unexplainable desense issue
Disconnect the antenna at the duplexer and replace with a dummy load. Does the problem still exist ?
Re: [Repeater-Builder] UHF Duplexers
Eric, The repeater is 70cm amateur (444.625 TX/449.625 RX). These duplexers have been used on this same repeater for I'd say 10-13 years. I was given the repeater by the previous owner because the site was lost and he did not have time to repair the problems that did show up (the PA went out). I had a mobile PA that I turned down and used it and ran the repeater from my house for a few months (ran fine), then disconnected it. It sat in my shop from Oct 2008 until around 1 month ago. It was not as before. I wound up basically rebuilding the receiver, and I rebuilt the original PA. However, this year in Oklahoma, we did get a lot of rain and it did get pretty warm in my shop (along with high humidity. I wonder if the heat and humidity might have done something to the duplexers. I do have another set of these that were on the link transciever (the link was set up to run full duplex as well), I may retune them to see what I have. Equipment and tuning method. Here is what I was taught how to do it. I use an IFR 1200S service monitor, and the only spare radio I have at the moment is an Icom T7H HT. I start with RX (449.625) first. I connect the IFR to the antenna port, a reciever on the RX port (high pass), and a dummy load one the TX (low pass). I adjust RX pass freq for best SINAD. I then change the receiver and IFR to the TX freq and adjust for the best rejection, or worst SINAD. I do the TX (444.625) side the same way, best SINAD TX pass, worst SINAD RX reject. I tuned a set of duplexers this way before on a 2m repeater using 6 cavity Sinclair BpBr with no problems, this is the first I have messed with a set of Wacom's. Terry KM5UQ From: Eric Lemmon wb6...@verizon.net To: Repeater-Builder@yahoogroups.com Sent: Saturday, September 19, 2009 6:30:57 PM Subject: RE: [Repeater-Builder] UHF Duplexers Terry, Is your repeater in the 70cm Amateur band? If so, and your WP-678 duplexer was not originally tuned for that band, that may be where the problem lies. I have a Remec-Wacom WP-678 duplexer that I bought from the factory for GMRS service, and its insertion loss at the transmit frequency is 1.14 dB, equivalent to 38.5 watts out for 50 watts in. Your duplexer's measured insertion loss exceeds 4 dB. Most Wacom UHF commercial-band duplexers will tune down into the Amateur band, but not all of them. It appears that your duplexer is tuned improperly, or it may be impossible to tune it to your pair. What method and equipment are you using to tune the duplexer? 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@ yahoogroups. com [mailto:Repeater-Builder@ yahoogroups. com] On Behalf Of terry dalpoas Sent: Saturday, September 19, 2009 2:11 PM To: Repeater-Builder@ yahoogroups. com Subject: [Repeater-Builder] UHF Duplexers Just about finished with the Mastr II UHF repeater. I've run into a problem with the duplexers. They are a set of WACOM BpBr Model WP678. I am putting 48W into them, but only 18.5W out. I believe this should be better. RX will open squelch at around .2-.3 uV through the cans (this I know is OK). Could there be a problem with the TX side of the cans? Terry KM5UQ
Re: [Repeater-Builder] a strange unexplainable desense issue
At 9/19/2009 17:25, you wrote: Hey guys, Alright, i have a very strange problem on 220. Let me explain the equipment. The repeater is a hipro r1, with an arcom rc210 controller, hustler 220 antenna, and wacom duplexer. I'm getting this very strange feedback in to the 220 receiver. The problem only occurs when the 220 transmitter is keyed. Got a 1600 AM radio station in the area? We checked the duplexer and it appears perfect on a service monitor. After having gotten the repeater back from hipro, we measured it, and it shows up -.71 KHZ off frequencyy, in terms of the transmitted signal. To me this seems way off, but according to hipro it's within spec. I let the crystals warm up for a good 10 minutes before doing this test. For cable between the receiver and the duplexer, and the transmitter and the duplexer, it's rg142. Any ideas guys? I've been given a theory that it may be the antenna, since they are not that good at repeater service. The Hustler G7-220 is a reasonably good antenna; doubt it's your problem unless there's a loose joint/corrosion problem. The antenna is mounted on the roof of a hospital. More likely that some other electronics on or just below the roof is causing a mix. Bob NO6B
