[Repeater-Builder] Re: simulcast transmitters
Yea, they have been simulcasting paging, including tone and voice here in this country for MANY years. UHS Oscillators and offsets of 1 to about 8Hz causes any nulling that will happen in overlap areas to move around in the overlap area. It is very important that ALL audio be as perfectly in phase as possible we used to use Allen Aviation (I think) delay lines. the problem is if you have multiple receivers. Then you have to thoes togeather with delay lines going to a single site for re distribution. Good luck! AC0Y --- In Repeater-Builder@yahoogroups.com, Al Wolfe [EMAIL PROTECTED] wrote: Back in the 1970's several of the European broadcasters experimented with simulcasting with multiple transmitters on the same frequency. It seems to me that they settled on 50 htz for an offset (carrier frequency difference) between adjacent transmitters. This is low enough to not be a problem with PL tones and high enough to mask the beat note issue in the overlapping mush zones. Not sure how they maintained their frequency stabiliy back then. Al, K9SI Date: Wed, 04 May 2005 08:53:07 -0400 From: Kevin Custer [EMAIL PROTECTED] Subject: Re: voting receivers with simulcast transmitters Joe, Did you mean offset when you said stability? I'd agree that 1/2, to a few Hertz would be annoying. In testing here, and as shown in practice, simple systems sound better if run at about 10 - 20 Hz offset. This makes the beating more tolerable without being able to be reproduced (very well) by the listening speaker. This is also why it is nice to have high pass filtering in the listening receivers. Radios with PL filters do nicely, something like the Com-Spec TS-64's PL filter works well. Unfortunately, many made for ham rigs don't have adequate (if any) high-pass filtering even if the radio has PL decode. Simulcast Systems are one area that benefit from Total HPF of a PL filter, where Notch Filtering would do no good for the Simulcast beats in the very low frequency range; 60 Hz. Of course, at 10 Hz offset, a few Hz. of instability at each transmitter could result in something very annoying; as the two drifting transmitters could come within a few Hz. of one another or worse yet, zero beat. I remember one particular instance many years ago where we did testing of two transmitters that were close together and run at 67 Hz offset. You could decode this PL tone when you heard both transmitter sites, but they didn't have HSO's and drifted enough that PL decoding was not reliable. Kevin Custer mch wrote: To work well, you will need more than 'a few Hz' stability. Even 1/2 Hz is very noticable and annoying. Joe M. Thomas Oliver wrote: You will need the three transmitters to have uhso (high stab oscilators) to keep them within a few hz of each other, you will have to delay the audio so all three transmitters transmit the audio at the same time. I do not know what effect the multipath from buildings will have on the recieved signal. I think it is worth a shot. tom n8ies 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] CWID
I just wanted to thank everyone for the many responses to my inquiry about cwid. Now comes the tough part of making the decision which way to go. The wealth of knowledge of this group is amazing. Thanks again WA0VUSLarry KemperMuscatine, Iowa [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 the Yahoo! Terms of Service. attachment: tech.gif
[Repeater-Builder] Wacom filters service
Hello all,,,I need to strip down and service a set of four Wacom 145mhz filters for our local 2m box has anyone any advice before I startafter 15 years use the adjusters have become noisy etc, Rgds Fraser G8FEZ 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] CW IDer
I need help with putting a CW IDer on a GR300 repeater with a RICK module. Alan B. Jones10630 Nathan LaneMaple Grove MN. 55369 Email [EMAIL PROTECTED] Ham Radio N0QPM 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. tech.gif
Re: [Repeater-Builder] Looking for Microwave Associates 7R011T Isolator Tuning Procedure
Michael, Thanks, This is exactly what I was looking for. Steve WA6ZFT On Thursday 05 May 2005 21:58, Micheal Salem wrote: Steve: As a matter of fact, I do have tuneup instructions that I got from Microwave Associates. They are attached. I have successfully tuned a 7R011 using these. I did not have a power meters, but could use a smaller element in a Bird wattmeter and got pretty good isolation. Micheal Salem N5MS Steve Rodgers wrote: Does anyone have a tuning procedure they could share for the Microwave Associates 7R011T dual-stage UHF Isolator? I have 2 of these tuned on 454 and 462MHz. I've never attempted to tune isolators so any tips would be useful. Can these be tuned with a tracking generator/spectrum analyzer? Steve WA6ZFT Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * 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: Looking for Microwave Associates 7R011T Isolator Tuning Procedure
Hi Micheal, The attachments sent to the group don't come through to those of us reading posts on line with a web browswer. Would you or anyone who received the attachment please Email forward me a copy? Mucho Thanks skipp [EMAIL PROTECTED] skipp025 at yahoo.com Micheal Salem [EMAIL PROTECTED] wrote: Steve: As a matter of fact, I do have tuneup instructions that I got from Microwave Associates. They are attached. I have successfully tuned a 7R011 using these. I did not have a power meters, but could use a smaller element in a Bird wattmeter and got pretty good isolation. Micheal Salem N5MS Steve Rodgers wrote: Does anyone have a tuning procedure they could share for the Microwave Associates 7R011T dual-stage UHF Isolator? I have 2 of these tuned on 454 and 462MHz. I've never attempted to tune isolators so any tips would be useful. Can these be tuned with a tracking generator/spectrum analyzer? Steve WA6ZFT Yahoo! Groups Links 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: Wacom filters service
Hopefully you have the instruments to align the cavities. Clean any visible threaded shafts and mechanical parts with a small (wood handle type) Stainless Steel or Brass Brush. Use a combination of clean lint free rags and a non residue leaving lubricant to lightly free up the mechanical parts. Amsoil MP Synthetic Spray is a good choice for some places (and it's cheap to buy). Measure and record the relative shaft lengths and any available adjustments. I made up a drill chuck/clamp for the tune rod. After the above steps, I slowly run the tuning rods up and down almost the entire range of the plunger assembly. Using a Makita hand drill and many others with a very light torque release setting will ensure you don't damage the mechanics. Running the plunger cap up and down a few times will help remove oxide buildup and pitting. High power RF, nearby lighting (and direct) can cause serious plunger/cap pitting, especially with/during small mechanincal vibrations. More so from inexperienced high power duplexer tuning. Those who use the rf power alignment duplexer tune method are advised to use very low power for the initial coarse adjustments. Put the duplexer adjustment back in range, adjust with your test equipment and see if the noise goes away. Be sure to check the coax jumper and connectors for proper assembly. A very light coat of Caig Labs ProGold G5 on a rag can be wipped over the connector ends. Plunger pitting is a very common noise source. Bad cases from lightning strikes and Boob Tuning may not be easily fixed ... in such cases you can only use the cavity at other frequencies where the adjustments don't place the damaged plunger/body mechanics at the same location. Been there, done that, coffee mug and tee shirt. cheers, skipp fraser3914 [EMAIL PROTECTED] wrote: Hello all,,,I need to strip down and service a set of four Wacom 145mhz filters for our local 2m box has anyone any advice before I start after 15 years use the adjusters have become noisy etc, Rgds Fraser G8FEZ 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: Wacom filters service
Hi Skipp,,,Brilliant just what I was looking for someonewho has the "T" shirt was involved with some of the first UK ham repeaters back in the later 70's now getting back into them,,,and yes have loads of test equipment etc,,,and hopfully the knowledge to use them,,,once again many thanks,, Fraserskipp025 [EMAIL PROTECTED] wrote: Hopefully you have the instruments to align the cavities. Clean any visible threaded shafts and mechanical parts with a small (wood handle type) Stainless Steel or Brass Brush.Use a combination of clean lint free rags and a non residue leaving lubricant to lightly free up the mechanical parts. Amsoil MP Synthetic Spray is a good choice for some places(and it's cheap to buy). Measure and record the relative shaft lengths and any available adjustments. I made up a drill chuck/clamp for the tune rod. After the above steps, I slowly run the tuning rods up and down almost the entire range of the plunger assembly. Using a Makita hand drill and many others with a very light torque release setting will ensure you don't damage the mechanics. Running the plunger cap up and down a few times will help remove oxide buildup and pitting. High power RF, nearby lighting (and direct) can cause serious plunger/cap pitting, especially with/during small mechanincal vibrations. More so from inexperienced high power duplexer tuning.Those who use the rf power alignment duplexer tune method are advised to use very low power for the initial coarse adjustments. Put the duplexer adjustment back in range, adjust with your test equipment and see if the noise goes away. Be sure to check the coax jumper and connectors for proper assembly. A very light coat of Caig Labs ProGold G5 on a rag can be wipped over the connector ends. Plunger pitting is a very common noise source. Bad cases from lightning strikes and "Boob Tuning" may not be easily fixed ... in such cases you can only use the cavity at other frequencies where the adjustments don't place the damaged plunger/body mechanics at the same location. Been there, done that, coffee mug and tee shirt. cheers,skipp "fraser3914" <[EMAIL PROTECTED]>wrote: Hello all,,,I need to strip down and service a set of four Wacom 145mhz filters for our local 2m box has anyone any advice before I start after 15 years use the adjusters have become noisy etc, Rgds Fraser G8FEZYahoo! 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 the Yahoo! Terms of Service.
Re: [Repeater-Builder] Quintron Low VHF 4-400A PA
[EMAIL PROTECTED] wrote: Anyone have schematics, or other info on a Quintron 30-50 MHz 600 Watt Class C Paging PA? This is an older rack mounted PA that uses a 4-400A tube, with a single pill transistorized driver. Looking for power supply outputs, and HV board hookup. It has been a while, and no one has answered your request for information concerning the Quintron Corporation QT-7080 50 MHz Transmitter. I gave (free) one of these transmitters away a number of years ago. It was extremely well built and great for amateur use in the six meter band. Fortunately for you, I never gave away the manual with all the schematics, etc. Let me know if you still require the info, and I'll copy and send it to you. Probably off list is better to contact me. Ciao, 73, Tony, K3WX 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] For Sale: Two Mitreks
Hi Guys, I don't post much but I have been building some repeaters and now have some spare units I would like to sell for Dayton cash :o) 1. VHF High Band Mitrek mobile, low power model, with freq. elements. I have not tested this unit, but the person I bought it from claims it was working fine. The front label has been removed so I do not know the actual model number or serial. Comes with PL deck HLN4020A. Its a little dusty but about a 8/10. No acessories, just the radio. Asking $50 for or best offer. 2. VHF Low Band Mitrek Mobile, high power model with freq. elements. Model: T81JJA4000AK Serial: 433HEE4237 According to several web sources, looks like it will do 6M. Comes with PL deck HLN4020A. I have not tested this unit, but the person I bought it from claims it was working fine. Its a little dusty but about a 9/10. No acessories, just the radio. Asking $50 for or best offer. I will ship UPS and will let whoever would like them know shipping cost as soon as I get their zipcode. Thanks, please email any questions off-list to jason @ ke4nyv.com (take out the spaces) Jason KE4NYV www.ke4nyv.com RPC Electronics www.rpc-electronics.com 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: Quintron Low VHF 4-400A PA
He also posted the request on the yahoo rfamplifiers group. Don't know if it turned anything up. http://groups.yahoo.com/group/rfamplifiers/ skipp Tony Faiola [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: Anyone have schematics, or other info on a Quintron 30-50 MHz 600 Watt Class C Paging PA? This is an older rack mounted PA that uses a 4-400A tube, with a single pill transistorized driver. Looking for power supply outputs, and HV board hookup. It has been a while, and no one has answered your request for information concerning the Quintron Corporation QT-7080 50 MHz Transmitter. I gave (free) one of these transmitters away a number of years ago. It was extremely well built and great for amateur use in the six meter band. Fortunately for you, I never gave away the manual with all the schematics, etc. Let me know if you still require the info, and I'll copy and send it to you. Probably off list is better to contact me. Ciao, 73, Tony, K3WX 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] Looking for Microwave Associates 7R011T Isolator Tuning Procedure
At 5/5/2005 09:58 PM, you wrote: Steve: As a matter of fact, I do have tuneup instructions that I got from Microwave Associates. They are attached. Initial tuning of this unit must be done at power levels of 10 watts or less. Severe damage can result to untuned units by the application of power in excess of this limit. I can see a TX being damaged by excessive reflected power from an untuned isolator's input, but damage to the isolator? Reason I bring this up is because when I tune an isolator with a TX, I put another (already tuned) isolator between the TX the isolator being tuned to make sure the latter sees 50 ohms on all ports. So I don't have to worry about what the TX sees because it's already isolated, but I also run ~30 watts or so to get a good indication on the Bird using a 50 watt slug. Bob NO6B 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] Looking for Microwave Associates 7R011T Isolator Tuning Procedure
Steve: You are welcome. Maybe Kevin or Mike will post it to the website. Let me make a couple of points that I hope will help. I learned these many years ago when I had a 7R011 given to me. Someone had tried to put a PL-259 into the N connector and sheared off the interior pin. I took the 7R011 apart and was able to fit a new female chassis N connector on the isolator. I could never get it anywhere near the specs. So, I called Microwave Associates and spoke to someone in their repair department. I described what had happened and what I had done. He told me that this was very tricky to do and that they used nonmagnetic copper vises to position the isolator just right when assemblying or repairing it. For not much money at the time (maybe $50.00 to $70.00, I don't remember), they repaired the connector and it came back like new. I also got some information from the repair man about the isolator and how to treat it. He told me to be sure and use brass or other nonmagnetic materials when mounting it and to not to take it off the panel. It mounts on the panel on standoffs. So brass screws and aluminum standoffs were what I used. All I got was the isolator (that was all that was broken). But a friend of mine had an aluminum panel that he had for one. I eventually acquired a couple of the low pass filter around and at Dayton one year and had a couple of the 100 watt Microwave Associates dummy loads that it took and a smaller 25 watt load. It tuned up and seemed to work well. I ran it on a UHF repeater with no problems. One of the problems in tuning was getting enough sensitivity to read the reverse hookup (RF into the antenna port and measure power coming out of the transmitter port). I had a 1 watt UHF slug, so that I could read .1 watt and that could be about 30 db from 10 watts. However, it occurs to me that you could use that W7ZOI wattmeter that uses the Analog Devices RF power measurement chip (I think AD8037)) which would let you use lower power and go down -50 to 80 db. Might want to put a 20 db attenuator in line in case you get it out of tune and a lot of power comes down and blows up your Wattmeter. Of course, I think that Microwave Associates was expecting everybody to have an HP 435B with an appropriate RF head is what they are looking at, but the Gilbert Cell AD8037 seems to me to be a good replacement. I recently got another 7R011 and will have to dig out an aluminum panel to put it on and get some dummy loads. I hope this is helpful. Micheal Salem N5MS Norman, Oklahoma Steve Rodgers wrote: Michael, Thanks, This is exactly what I was looking for. Steve WA6ZFT On Thursday 05 May 2005 21:58, Micheal Salem wrote: Steve: As a matter of fact, I do have tuneup instructions that I got from Microwave Associates. They are attached. I have successfully tuned a 7R011 using these. I did not have a power meters, but could use a smaller element in a Bird wattmeter and got pretty good isolation. Micheal Salem N5MS Steve Rodgers wrote: Does anyone have a tuning procedure they could share for the Microwave Associates 7R011T dual-stage UHF Isolator? I have 2 of these tuned on 454 and 462MHz. I've never attempted to tune isolators so any tips would be useful. Can these be tuned with a tracking generator/spectrum analyzer? Steve WA6ZFT Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * 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 the Yahoo! Terms of Service.
Re: [Repeater-Builder] Looking for Microwave Associates 7R011T Isolator Tuning Procedure
Bob Dengler wrote: "Initial tuning of this unit must be done at power levels of 10 watts or less. Severe damage can result to untuned units by the application of power in excess of this limit." I can see a TX being damaged by excessive reflected power from an untuned isolator's input, but damage to the isolator? Bob: I think that they may be concerned about off resonance circulating currents or voltages during tuneup which could demagnetize (or change the permanent fields of the internal magnets and damage the isolator. I would have to look it up, but I think that this isolator takes up to at least 100 watts. That would be when it is in resonance. I have run 65 watts through it with not much trouble. Micheal Salem 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: Looking for Microwave Associates 7R011T Isolator Tuning Procedure
Micheal Salem [EMAIL PROTECTED] wrote: I could never get it anywhere near the specs. So, I called Microwave Associates and spoke to someone in their repair department. I described what had happened and what I had done. He told me that this was very tricky to do and that they used nonmagnetic copper vises to position the isolator just right when assemblying or repairing it. The key information above non-magnetic tools. He told me to be sure and use brass or other nonmagnetic materials when mounting it and to not to take it off the panel. ding, ding, ding... jackpot. You alway want to try and use non magnetic hardware and tools where possible. Some of you might have noticed the mention of Stainless Steel or Brass in the recent Wacom Duplexer post. Another reason is to avoid embedding steel or other unwanted metals from a brush/tool into the subject item. One of the problems in tuning was getting enough sensitivity to read the reverse hookup (RF into the antenna port and measure power coming out of the transmitter port). I had a 1 watt UHF slug, so that I could read .1 watt and that could be about 30 db from 10 watts. One must be cautious, the final adjustment location moves around with heat. and it doesn't take much. In my opinion, the supplied terminations should be swapped for higher power loads. I recently got another 7R011 and will have to dig out an aluminum panel to put it on and get some dummy loads. Many Motorola Radio Sites on the West Coast used the MA Tx combiner systems. They were made up of the ever popular Motorola T-1500 BP Cavities (with the proper loop settings) and the mentioned 7R011 units in combinations as 4 frequencies per panel. Not really the best for close spaced frequencies, but they did work really well. cheers, skipp 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: Looking for Microwave Associates 7R011T Isolator Tuning Procedure
Micheal Salem [EMAIL PROTECTED] I think that they may be concerned about off resonance circulating currents or voltages during tuneup which could demagnetize (or change the permanent fields of the internal magnets and damage the isolator. Heat... I would have to look it up, but I think that this isolator takes up to at least 100 watts. That would be when it is in resonance. I have run 65 watts through it with not much trouble. Micheal Salem The port loads are under sized if you want real protection. The units operate just fine at 100 watts fwd power... at least that's what Motorola had been blowing through them for some decades. As long as the antenna system works as it should, the loads are probably ok for lower power levels. But I wouldn't trust the supplied port loads as a failsafe. skipp 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] TKR-740 program question
I have a Kenwood TKR-740 that I would like to program up as a backup box. The transmit frequency goes in with no problem but the receive frequency rounds up to 146.000. Does anybody know if there is a key combination to enter a receive frequency below 146.000? Thank's for any help. Joel KG6KJD 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] TKR-740 program question
well the TKR-740K should do 146 to 162 K2 should do 158 to 174 K3 should do 136 to 150 all above are RX all do TX 136 TO 174 John all above out of service manual - Original Message - From: kg6kjd [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, May 06, 2005 4:46 PM Subject: [Repeater-Builder] TKR-740 program question I have a Kenwood TKR-740 that I would like to program up as a backup box. The transmit frequency goes in with no problem but the receive frequency rounds up to 146.000. Does anybody know if there is a key combination to enter a receive frequency below 146.000? Thank's for any help. Joel KG6KJD Yahoo! Groups Links 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: TKR-740 program question
Thanks. I must have been brain dead today. I forgot that the RX has 3 ranges. Set it up for the other range and retuned the VCO/front end. Works fine. Joel --- In Repeater-Builder@yahoogroups.com, Maire-Radios maire- [EMAIL PROTECTED] wrote: well the TKR-740K should do 146 to 162 K2 should do 158 to 174 K3 should do 136 to 150 all above are RX all do TX 136 TO 174 John all above out of service manual - Original Message - From: kg6kjd [EMAIL PROTECTED] To: Repeater-Builder@yahoogroups.com Sent: Friday, May 06, 2005 4:46 PM Subject: [Repeater-Builder] TKR-740 program question I have a Kenwood TKR-740 that I would like to program up as a backup box. The transmit frequency goes in with no problem but the receive frequency rounds up to 146.000. Does anybody know if there is a key combination to enter a receive frequency below 146.000? Thank's for any help. Joel KG6KJD Yahoo! Groups Links 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: SEA ESP1000
Here is the preliminary schematic. Because the synth chip in the radio uses +9 V for some reason, this will have to be a board with SMD parts on it instead of a single chip. The plan is for Channel 1 to start at 223.85 with 10kHz spacing and channel 201 starts at 222.15 MHz. There will be jumpers to select wheather the board is in the RX or TX module so the 1.6MHz spacing is observed, this may be changed though as the program could be written so that it would look at the incoming data and know which side it was in which would be better for mobiles and HTs anyway. Also a jumper would select 5kHz spacing to allow tighter spacing with 20 channels in the ACSSB portion of the band from 222.15 - 222.25 / 223.75 - 223.85. This would also extend into the normal FM portion but not cover all of it. Still searching for a repeater to experiment on to write the software needed for the board to run. Let me know if anyone has one cheap. 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/ attachment: Synth Fooler.GIF
[Repeater-Builder] TKR-820 and the Kenwood KPT-20 Programmer
Well, everyone, I finally have my external controller (CAT-300) configured and working on this machine. My next task is to reprogram the frequency and PL options. I have a KPT-20 programmer, and the manual for it (and the repeater), but the programmer manual is not what I would call intuitive. Can anyone who has experience with this animal give me some explicit directions on how to change the EEPROMS? The repeater is currently on 462.155 (+5 Meg, with DPL) and I want to move it to 444.550 (+5 with PL 114.8). The radio does not have a channel change knob or channel display, so I assume it is only a single channel repeater (although it appears the EEPROM doesnt care about that). I have tried to fumble my way through reprogramming this, but when I get to the VERIFY portion, I get a failure message. Its apparent Im not doing something correctly, but Ill be damned if I can figure it out. The reprogramming and retuning is the final issues I need to do before I can put this on the air, so Im getting anxious now that Im close to the end. Thanks so much! Mark N9WYS 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.
Re: [Repeater-Builder] TKR-820 and the Kenwood KPT-20 Programmer
FYI 462.155 is not a channel in the FCC list for use in the US. - Original Message - From: N9WYS To: Repeater-Builder@yahoogroups.com Sent: Friday, May 06, 2005 8:01 PM Subject: [Repeater-Builder] TKR-820 and the Kenwood KPT-20 Programmer Well, everyone, I finally have my external controller (CAT-300) configured and working on this machine. My next task is to reprogram the frequency and PL options. I have a KPT-20 programmer, and the manual for it (and the repeater), but the programmer manual is not what I would call intuitive. Can anyone who has experience with this animal give me some explicit directions on how to change the EEPROMS? The repeater is currently on 462.155 (+5 Meg, with DPL) and I want to move it to 444.550 (+5 with PL 114.8). The radio does not have a channel change knob or channel display, so I assume it is only a single channel repeater (although it appears the EEPROM doesnt care about that). I have tried to fumble my way through reprogramming this, but when I get to the VERIFY portion, I get a failure message. Its apparent Im not doing something correctly, but Ill be damned if I can figure it out. The reprogramming and retuning is the final issues I need to do before I can put this on the air, so Im getting anxious now that Im close to the end. Thanks so much! Mark N9WYS 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] Diffrent part
On the subject of Microwave Associates. Does anyone have the tuning instructions for the 7R192 isolator?? Thanks in advance Johnny 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] TKR-820 and the Kenwood KPT-20 Programmer
Sorry I have fat fingers. The radio is on 462.150 (+) -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Maire-Radios Sent: Friday, May 06, 2005 7:08 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] TKR-820 and the Kenwood KPT-20 Programmer FYI 462.155 is not a channel in the FCC list for use in the US. - Original Message - From: N9WYS To: Repeater-Builder@yahoogroups.com Sent: Friday, May 06, 2005 8:01 PM Subject: [Repeater-Builder] TKR-820 and the Kenwood KPT-20 Programmer Well, everyone, I finally have my external controller (CAT-300) configured and working on this machine. My next task is to reprogram the frequency and PL options. I have a KPT-20 programmer, and the manual for it (and the repeater), but the programmer manual is not what I would call intuitive. Can anyone who has experience with this animal give me some explicit directions on how to change the EEPROMS? The repeater is currently on 462.155 (+5 Meg, with DPL) and I want to move it to 444.550 (+5 with PL 114.8). The radio does not have a channel change knob or channel display, so I assume it is only a single channel repeater (although it appears the EEPROM doesnt care about that). I have tried to fumble my way through reprogramming this, but when I get to the VERIFY portion, I get a failure message. Its apparent Im not doing something correctly, but Ill be damned if I can figure it out. The reprogramming and retuning is the final issues I need to do before I can put this on the air, so Im getting anxious now that Im close to the end. Thanks so much! Mark N9WYS 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.
Re: Re: [Repeater-Builder] Looking for Microwave Associates 7R011T Isolator
Michael, Thanks for the additional info. The soft power meter on the HP8920 service monitor goes down to 4 decimal places maybe this will be useful for low power testing. Steve WA6ZFT From: Micheal Salem [EMAIL PROTECTED] Date: 2005/05/06 Fri PM 01:59:44 EDT To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Looking for Microwave Associates 7R011T Isolator Tuning Procedure Steve: You are welcome. Maybe Kevin or Mike will post it to the website. Let me make a couple of points that I hope will help. I learned these many years ago when I had a 7R011 given to me. Someone had tried to put a PL-259 into the N connector and sheared off the interior pin. I took the 7R011 apart and was able to fit a new female chassis N connector on the isolator. I could never get it anywhere near the specs. So, I called Microwave Associates and spoke to someone in their repair department. I described what had happened and what I had done. He told me that this was very tricky to do and that they used nonmagnetic copper vises to position the isolator just right when assemblying or repairing it. For not much money at the time (maybe $50.00 to $70.00, I don't remember), they repaired the connector and it came back like new. I also got some information from the repair man about the isolator and how to treat it. He told me to be sure and use brass or other nonmagnetic materials when mounting it and to not to take it off the panel. It mounts on the panel on standoffs. So brass screws and aluminum standoffs were what I used. All I got was the isolator (that was all that was broken). But a friend of mine had an aluminum panel that he had for one. I eventually acquired a couple of the low pass filter around and at Dayton one year and had a couple of the 100 watt Microwave Associates dummy loads that it took and a smaller 25 watt load. It tuned up and seemed to work well. I ran it on a UHF repeater with no problems. One of the problems in tuning was getting enough sensitivity to read the reverse hookup (RF into the antenna port and measure power coming out of the transmitter port). I had a 1 watt UHF slug, so that I could read .1 watt and that could be about 30 db from 10 watts. However, it occurs to me that you could use that W7ZOI wattmeter that uses the Analog Devices RF power measurement chip (I think AD8037)) which would let you use lower power and go down -50 to 80 db. Might want to put a 20 db attenuator in line in case you get it out of tune and a lot of power comes down and blows up your Wattmeter. Of course, I think that Microwave Associates was expecting everybody to have an HP 435B with an appropriate RF head is what they are looking at, but the Gilbert Cell AD8037 seems to me to be a good replacement. I recently got another 7R011 and will have to dig out an aluminum panel to put it on and get some dummy loads. I hope this is helpful. Micheal Salem N5MS Norman, Oklahoma Steve Rodgers wrote: Michael, Thanks, This is exactly what I was looking for. Steve WA6ZFT On Thursday 05 May 2005 21:58, Micheal Salem wrote: Steve: As a matter of fact, I do have tuneup instructions that I got from Microwave Associates. They are attached. I have successfully tuned a 7R011 using these. I did not have a power meters, but could use a smaller element in a Bird wattmeter and got pretty good isolation. Micheal Salem N5MS Steve Rodgers wrote: Does anyone have a tuning procedure they could share for the Microwave Associates 7R011T dual-stage UHF Isolator? I have 2 of these tuned on 454 and 462MHz. I've never attempted to tune isolators so any tips would be useful. Can these be tuned with a tracking generator/spectrum analyzer? Steve WA6ZFT Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links Yahoo! Groups Links * To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ * 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] TKR-820 and the Kenwood KPT-20 Programmer
Contact me direct, I can guide you to do it, is not a big deal Juan - Original Message - From: N9WYS To: Repeater-Builder@yahoogroups.com Sent: Friday, May 06, 2005 5:01 PM Subject: [Repeater-Builder] TKR-820 and the Kenwood KPT-20 Programmer Well, everyone, I finally have my external controller (CAT-300) configured and working on this machine. My next task is to reprogram the frequency and PL options. I have a KPT-20 programmer, and the manual for it (and the repeater), but the programmer manual is not what I would call intuitive. Can anyone who has experience with this animal give me some explicit directions on how to change the EEPROMS? The repeater is currently on 462.155 (+5 Meg, with DPL) and I want to move it to 444.550 (+5 with PL 114.8). The radio does not have a channel change knob or channel display, so I assume it is only a single channel repeater (although it appears the EEPROM doesnt care about that). I have tried to fumble my way through reprogramming this, but when I get to the VERIFY portion, I get a failure message. Its apparent Im not doing something correctly, but Ill be damned if I can figure it out. The reprogramming and retuning is the final issues I need to do before I can put this on the air, so Im getting anxious now that Im close to the end. Thanks so much! Mark N9WYS 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.
Re: [Repeater-Builder] Looking for Microwave Associates 7R011T Isolator Tuning Procedure
Micheal Salem wrote: As a matter of fact, They are attached. I have uploaded the 7R011 Tuning Instructions to RBTIP. Maybe Mike Morris would be so kind to add a link or index so folks can find them. http://www.repeater-builder.com/other-mfrs/7R011-tuneup.pdf 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] Looking for Microwave Associates 7R011T Isolator Tuning Procedure
Thanks go out to Mike Salem for providing the information. I forgot to say that in my post with the link. http://www.repeater-builder.com/other-mfrs/7R011-tuneup.pdf Thanks Mike, Kevin Micheal Salem wrote: As a matter of fact, I do have tuneup instructions that I got from Microwave Associates. 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] Looking for Microwave Associates 7R011T Isolator Tuning Procedure
Skip: I did look it up when I got home in my ancient M/A-COM catalog (From 1982, no less. It is hard to throw this stuff away). For those who are interested, the 7R011 is specified at 125 watts. The insertion loss is .9 db typical with 1.3 db max. The isolation can be as high as 60 db with 50 db typical. That may require breaking out the HP435B and an RF head to tune it. But I could get a good null right down to zero indication at 10 watts in and a 1 watt Bird element on the output and expected that I had at least 40 db or more of isolation. It is described as a metro style isolator. The 44004 load that comes with the typical IM panel that includes the 7R011 is rated at 100 watts and I would agree with Skipp that it would not be a good idea to dump more than 100 watts through the device. With 125 watts in and an insertion loss of .9 db. there probably isn't more than 100 watts in the dummy load, but you could be dissipating a lot of power in heat in the isolator in an open antenna condition. Micheal Salem N5MS Norman, Oklahoma skipp025 wrote: I would have to look it up, but I think that this isolator takes up to at least 100 watts. That would be when it is in resonance. I have run 65 watts through it with not much trouble. Micheal Salem The port loads are under sized if you want real protection. The units operate just fine at 100 watts fwd power... at least that's what Motorola had been blowing through them for some decades. As long as the antenna system works as it should, the loads are probably ok for lower power levels. But I wouldn't trust the supplied port loads as a failsafe. skipp 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.
