Re: [Repeater-Builder] No TX audio
Take a telephone butt set to examine the output, and some resistors. If these are simulcasting it would seem there is something affecting the ptt parallel circuit - take 2 or 3 some 1n4001 to act as isolator so that one ptt does not backfeed into the other. I think I would use a pair of output buffers on the audio to prevent excess loading of the controller output although that is not your problem today it may occur when the temps get higher in the radio-room. Tedd Doda wrote: Gentlemen: Something very strange just started to happen to my repeater system. First off, I have a UHF Mastr II on UHF and another Mastr II on 6 meters ties together using an RC-100 controller. The 6 meter machine is connected as the main repeater and the UHF is connected as the remote base (full duplex). All of a sudden, I lost audio from the UHF transmitter ONLY when coming in on UHF. 6 meters to UHF works just fine? Basically, this is what's happening (audio): UHF to 6 meters --OK UHF to UHFNada 6 meters to UHF---OK 6 meters to 6 meters--OK The reason this has me so confused, is that the audio to both transmitters is driven off the same point in the controller, except for a 4.7K resistor in series for the UHF transmitter. Sounds like a UHF transmitter problem Eh? Can't be because the audio from 6 meters comes through just fine with no distortion. I was thinking about a desence problem on the UHF receiver, but the audio from UHF passes through the 6 meter machine just fine. The site is on a very large hill, with a 20 degree sloped laneway, covered in snow/ice. I think a snowmobile would have a hard time getting up at this time of the year. Walking up is the only option, and with a windchill of -25F, I only want to do this once. If anyone has any clue what to look for once I do make it up there, let me know. I'll take up an audio signal tracer with me to see where it stops, but hopefully someone has run into this before. Tedd Doda, VE3TJD Lazer Audio and Electronics Baden, Ontario, Canada Way to go Matt! (NASCAR #17) -- 73...Clark Beckman N8PZD Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] M100 Radius
I was wondering if anyone have wired (2) two M100 with RICK unit to make a repeater. The M100 doers not have the 16 pin plug like the GM300, and was wondering if anyone has success via the microphone plug. Thanks Ed Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Controler Pin Out
Try the webpage for the company, and it's Micro Computer Comcepts RC1000. //home.earthlink.net/~mccrpt/ if this doesn't turn out I'll scan a copy of my drawing and email it to you contact me off board. 73 AC0Y --- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ [EMAIL PROTECTED] wrote: At 12:22 PM 1/13/04 -0500, you wrote: I have a Micro Computer Concepts RC-1000 Controller. I need a copy of the assembly drawing (I think) that shows the pinout of the Connector on the back. I downloaded a copy of the manual, however, it does not show how to wire it up. Anyone got a copy they can send me? Thanks for your help Al, N8ARO mailto:[EMAIL PROTECTED][EMAIL PROTECTED] The only info I have is at http://www.repeater-builder.com/pix/rc100schematic.jpg and at http://www.repeater-builder.com/pix/rc100board.jpg If you have anything else, I'd like to have it... Mike WA6ILQ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] 146-148 Mhz Maxtrac question
Hello: Try holding down the shift key when typing in the frequency, all except the decimal point. If this doesn't work, you will need to use a Hex Editor. Mike Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Purc 5000 programming??
Hi, I have acquired a purc 5000 with the enhanced drawer that is programmable (supposedly without having to reprogram the eprom) from th e front panel of the unit. A friend is trying to program it and so far when he puts the new freq in, it seems to take, but when you go back in, it's still on the old freq. Someone suggested to us that the actual operating freq could only be changed by motorola. Anyone know for sure? I can provide all the unit numbers you might need. Thanks in advance Larry Williams KE4PCZ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] No TX audio
Sounds like a hike with a replacement 4.7 or as close as you can will fix this one. Good idea on the fets for ptt, I was glad to see nhrc using them when I built my first model2. If you can carry skis to the peak just imagine the fun when you are done. Tedd Doda wrote: On Wed, 14 Jan 2004 11:04:26 -0500, Virden Clark Beckman wrote: Take a telephone butt set to examine the output, and some resistors. If these are simulcasting it would seem there is something affecting the ptt parallel circuit - take 2 or 3 some 1n4001 to act as isolator so that one ptt does not backfeed into the other. I think I would use a pair of output buffers on the audio to prevent excess loading of the controller output although that is not your problem today it may occur when the temps get higher in the radio-room. Clark: This system has been up for 2 or 3 years with no major failures, so I'm leary to change the audio paths, although what you say is a good idea. The PTT and PL tones ARE being sent properly on UHF, just no TX audio (in other words, the UHF repeater keys up). Each of the PTT's are being driven by separate FETS driven off of the RC-100, so they are as independent as you can get :) You are correct that they are being simulcast. Tedd Doda, VE3TJD Lazer Audio and Electronics Baden, Ontario, Canada -- 73...Clark Beckman N8PZD Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] 146-148 Mhz Maxtrac question
Hi all, I got a couple of 146-148 Maxtracs that I was thinking of making a repeater out of. The problem I have is that the only frequencies I can get coordinated are in the 145 Mhz part of the band. Is there a mod for these radios to get them to go down there or am I out of luck? I looked on Batlabs and there is no mod listed, but I hoped perhaps the list would know of something. If these aren't going to be usable for me, I might be interested in trading them for similar gear that will go into the 145 portion of the band. Thanks and 73, Chris, KG0BP Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] No TX audio
At 12:03 PM 1/14/2004 -0500, you wrote: take 2 or 3 some 1n4001 to act as isolator so that one ptt does not backfeed into the other. A good idea overall but 1N4001's are a bit of an overkill (he certainly shouldn't need 1 amp capability for PTT)! 1N4148's should more than enough... Ken -- President and CTO - Arcom Communications Makers of state-of-the-art repeater controllers and accessories. http://www.ah6le.net/arcom/index.html Our new Repeater Audio Delay (RAD) board is now shipping! Compatible with many controllers! AH6LE/R - IRLP Node 3000 http://www.irlp.net Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Help with finding discount HT750 1250's
I just get some new radio's from Cook towers in GA. They do mother M new and discount to Hams and Fire fighters. The toll free number is 877-992-2665 and the direct number in Marietta GA is 770-423-7553. they have been very helpful to our group. We bought 3 902 MHZ repeater from them. I just bought some GTX's for 902 from them this week. Great folks! Good luck! - Original Message - From: vol_fire964 [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Wednesday, January 14, 2004 12:46 AM Subject: [Repeater-Builder] Help with finding discount HT750 1250's Hi, I am requesting assistance on finding Motorola HT750 and HT1250 radios at a discount price for fire departments. I am looking for a Motorola dealer in central Alabama they can provide a good price between 450 and 510 dollars for these radios. Of course, they would be new with a battery and Charger. We are presently looking into purchasing radios within the next 15 days and would like some responses on where to find these radios for that price. Thank you in advance for your time and efforts. Mike Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: Purc 5000 programming??
--- In Repeater-Builder@yahoogroups.com, Larry Williams [EMAIL PROTECTED] wrote: ... A friend is trying to program it and so far when he puts the new freq in, it seems to take, but when you go back in, it's still on the old freq _ If you are trying to put it on a ham frequency, the controller may interpret that as being 'out of band' If so - there is a menu selection Disable Range Checking? Try doing that. Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
RE: [Repeater-Builder] Purc 5000 programming??
If it's an Advanced Controller, you have to flip a dip switch in order to change channel frequency settings if memory serves. I don't have the manual here and it's been a few years since I set one up; I'm sure somebody else here will give you the details. --- Jeff - Jeff DePolo WN3A Broadcast and Communications Consultant -Original Message- From: Larry Williams [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 14, 2004 11:32 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Purc 5000 programming?? Hi, I have acquired a purc 5000 with the enhanced drawer that is programmable (supposedly without having to reprogram the eprom) from th e front panel of the unit. A friend is trying to program it and so far when he puts the new freq in, it seems to take, but when you go back in, it's still on the old freq. Someone suggested to us that the actual operating freq could only be changed by motorola. Anyone know for sure? I can provide all the unit numbers you might need. Thanks in advance Larry Williams KE4PCZ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater- Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] OT: Sperry Gyroscope Teletester
better to enquire at www.greenkeys.com or is it org...one of them will get you there. mdm ted --- Davies, Doug A FOR:EX [EMAIL PROTECTED] wrote: Here's one for the oldtimers who have experience in commercial data transmission, teletype in particular. A fellow came into my office yesterday with this unit he said he found in the dump. It was made by Sperry Gyroscope Ltd. in Ottawa, Ontario Canada, a division of Sperry Rand Corp. Both of these entities were absorbed long ago by first Remington and then Unisys, I believe. The unit is call a Combination Teletest and has a tag on it that says it was last calibrated Dec. 1, 1978. From the front panel, I think this thing was used to test teletype equipment. It has stuff like a series of toggle switches that say MARK and SPACE on them as well as an adjustment for baud rate, from 12 to 1200 baud. There is also a meter that says % Distortion. There are two BNC connectors that say INPUT LOOP and OUTPUT LOOP. It has a bunch of other doo-dads that I can't rmember at the moment. Anyone ever seen or worked with one of these? It's obviously of no use anymore but curiosity has me wondering. Thanks for any info. Doug VA7DD Doug Davies Tenures/WoodlotForester Kalum Forest District Terrace, B.C. 250)-638-5125 (250)-638-5176 Fax MailTo:[EMAIL PROTECTED] Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ = Ted Bleiman K9MDM -just tired MDM Radio Ltd 1629-B N. 31 st Ave Melrose Park, IL 60160 708.681.0300 fax 708.681.9800 email [EMAIL PROTECTED] web http://www.mdmradio.com __ Do you Yahoo!? Yahoo! Hotjobs: Enter the Signing Bonus Sweepstakes http://hotjobs.sweepstakes.yahoo.com/signingbonus Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: Purc 5000 programming??
Well let's look at this from this prospective. I removed the power amps and the power supplies from the purc 5000 cabinet. I then put them in a cabinet with an antenna relay from RF Parts. This power amp, on VHF, is capable of 500 watts rf output on FM and on SSB. You need a manual to help you understand what the modules are expecting, so get a manual if possible. The manuals that come with the PURC are quite large. I do not use the exciter rf module, I excite the power amp with a FT-100. The results are most impressive, especially with an antenna with 9db gain fed with half inch hardline. Can you here me now! Watch out for heat dissipation from the power amp. You need the fan shelf or other fans to cool it. --- In Repeater-Builder@yahoogroups.com, Jeff DePolo WN3A [EMAIL PROTECTED] wrote: If it's an Advanced Controller, you have to flip a dip switch in order to change channel frequency settings if memory serves... In order to change the transmit frequencies from the front panel, switch 1 of DIP switch S801 on the Advanced Control Board must be set to the ON position. Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/ Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
[Repeater-Builder] Ritron Repeater Plus???
Ihave a few questions about aritron repeater plus, keep in mind i have very little experience working with repeaters, i have messed around with a R-100 a little thats all, I am wanting to build a small radio network with this unit and the r-100 and some other portable and Mobil radios. Is there a place to hook up a local speaker? what is the two phone jacks for, one is phone line in, the other is remote control phone.. what are these for??? how do you change the freq?? i guarantee there will be more questions to follow! Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes Yahoo! Groups Links To visit your group on the web, go to:http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to:[EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Repeater-Builder] Re: icom repeaters
--- In Repeater-Builder@yahoogroups.com, jedbartonradio [EMAIL PROTECTED] wrote: Hey gang. The local club is looking at the new Icom icfr4000 repeater. Anyone ever used this machine? It looks really slick. They say it does 50 watts continuous duty. Is this really true? I'm looking for some input especially with the durability factor in mind. I'm also curious about the audio. They have the rp4020 right now. Will these machines work well in the ham bands? Any info would be appreciated. Kindest Regards, Jed Hello Jed. As no one else has said it yet, I will. For the cost of the new Icom unit alone your club could put together a top shelf UHF repeater including duplexer and controller as well as antenna and feedline. (If one shops wisely). Units such as the MII, Master Exec II or MVP, not to mention the Mitrek are available for next to nothing. These radios when duplexed will perform as well as or better than most of the commercial offerings available today. The education you recieve during the duplexing/tuning process will come in handy later when maintenence time comes around. With regard to the RP 4020, I have some experience with two different units and I find myself less than impressed. Especially after looking at the original sales invoice! I am sure that others have their own opinions. 73 de John Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Adding Bandpass Cavities Preamp
On Wed, 14 Jan 2004, Eric Lemmon wrote: It is not as important to have bandpass cavities in front of pre-amps at UHF, since the split is usually 5 MHz, than it is at 2m with a 600 kHz split. So, I believe that you probably don't have to use a BP filter, but it may prevent overloading of the pre-amp. One of the reasons for using a BP cavity in front of a pre-amp is to protect the pre-amp from surges and spikes coming in through the antenna. The bandpass filters are used to narrow down the frequencies that make it to the pre-amp for ampification. Even tuned pre-amps amplify unwanted signals. You want to minimize the amount of junk your pre-amp amplifies, which will minimize the changes of over-loading the receiver and intermod. passage from Chip Angle's web site. clip Most of the real RF world can easily pass into the front of your receiver virtually unattenuated. There is an average of only a few dB attenuation away (out of band) from the operating frequency. If you are using a preamplifier then there is no protection for your receiver whatsoever to overload by signals even several hundred MegaHertz away. They can even be on distant mountain tops and still be causing you interference. The inclusion of a couple of low loss band pass resonators on the receiver port of the duplexer will eliminate most of the interference from out of band signals. clip and a short passage from DCI's website clip Third, many times when you add a preamp, the sensitivity of the receiver gets worse, and intermod pops up everywhere. What is the reason for this? When you add a preamp, especially a broadband one, all signals from police, firefighters, etc. get amplified at the same time. If your receiver created intermod with out-of-band signals stronger than -50 dBm then after adding the preamp with 20 dB of gain, all signals of -70 dBm will now be amplified to -50 dBm. You may have signals with strengths of -30 dBm before adding the preamp. These will now be -10 dBm; very strong signals indeed. All these new strong signals will now start mixing in your receiver and creating intermod that never existed before the preamp. As well, if signals are strong enough they will desense your receiver without causing intermod. The only answer in a case where adding a preamp makes things worse is to reduce the strength of the strong, out-of-band, signals with filtering. In summary, a good gallium arsenide (GASFET) preamp, if used with good low loss RF filters will almost always increase your sensitivity clip -Sean Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
