[Repeater-Builder] Re: Tuning duplexers with sweep generator?
Ok Mike, I can probably do that. I certainly qualify as a first-time repeater builder, and all of the pieces that it has required. I'll start collecting some of the pieces and images I need. I'd prefer to hold off publishing it until I actually get the repeater up and running; as proof that I really did learn what I thought I learned. ;-) Is there someone that I could/should submit a draft copy to? I'd prefer to run it by one or more knowledgable and experienced repeater-builders before it becomes visible to the world (sorta as preemptive damage control,...). vern --- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ [EMAIL PROTECTED] wrote: Why not do an entire article for repeater-builder? Something like A first-timer's experience at tuning a duplexer ??? snip Mike WA6ILQ
[Repeater-Builder] Re: Project building a repeater from boards (design example)
s. The box is nice. One can do similar with seperation walls by using multiple boxes. I can't see paying $765 for this unit, but guess 222 MHz stuff hard to find for some, hi. 73, ron, n9ee/r --- In Repeater-Builder@yahoogroups.com, skipp025 [EMAIL PROTECTED] wrote: There's an Ebay Auction for a Hamtronics 224MHz Repeater on Ebay right now: Hamtronics REP-200T Repeater with Internal Controller Ebay Item number: 300097601008 The reason I mention this auction is... if you've ever thought about building a repeater from various surplus boards/kits/parts and would like to see a pretty good straight-forward physical layout... the bottom inside view pictures of this repeater would give you good ideas about how to layout your repeater project in one box. Looks like a standard 17 inch wide al box... probably 3 inches high and say 10 or 12 inches deep. The rack mount ears are probably on a standard 19 inch front panel... although you could omit the extra front panel and put rack ears on each end of your box. You would not even need the rack mount ears in your project. You won't like the current price of a new LMB brand 17x12X3 inch al box with cover. So you can do what I and others do by using surplus salvage internet and telco equipment boxes with the original electronics recycled to your surplus electronic parts storage bin. Notice how each section of the repeater lives in its own section of the box. Wires run through the internal walls probably all/most go through feedthrough capacitors. You'd have to make up your internal walls as desired... RF from the receiver and transmitter sections/leads are kept well away from each other. So... it's just a nice example of how you might make up a repeater from various parts. That's about it... cheers, s.
[Repeater-Builder] Re: License renewal
Don, It is easier now than a few years ago that required I think the wisdom of an gover to get thru the site. If you thought about it you would get confused, real confused. Better now. Go to www.fcc.gov Select e-filing at the top of the page. You will need an FRN number and password for your dad to log in. You will get page with licenses in that name. On the far left select Renew License. This will take you to the part of the site that lets you do it. Keep in mind one is eligible for renewable if within I think 60 days to expire otherwise you cannot do it. I have in the past used W5YI which does excellent job, but usually they do just before it expires keeping one worried. They use to charge $6 and usually sends one a notice for this. The FCC site is free. 73, ron, n9ee/r --- In Repeater-Builder@yahoogroups.com, Don Kupferschmidt [EMAIL PROTECTED] wrote: Hi to all list members, I need to renew my father's amateur radio license shortly. Has anyone on the list used fcc.gov, been able to navigate through it, and successfully renewed their license? How easy / hard is it? Does anyone out there have a step by step instruction list to use as a guide? Or, is there a web site out there that can help me? I'm not looking to use a 3rd party provider if I can do this alone. TIA to all who reply. Don, KD9PT
Re: [Repeater-Builder] Re: Tuning duplexers with sweep generator?
I've responded to this message off-list. At 12:19 PM 04/08/07, you wrote: Ok Mike, I can probably do that. I certainly qualify as a first-time repeater builder, and all of the pieces that it has required. I'll start collecting some of the pieces and images I need. I'd prefer to hold off publishing it until I actually get the repeater up and running; as proof that I really did learn what I thought I learned. ;-) Is there someone that I could/should submit a draft copy to? I'd prefer to run it by one or more knowledgable and experienced repeater-builders before it becomes visible to the world (sorta as preemptive damage control,...). vern --- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ [EMAIL PROTECTED] wrote: Why not do an entire article for repeater-builder? Something like A first-timer's experience at tuning a duplexer ??? snip Mike WA6ILQ Yahoo! Groups Links
[Repeater-Builder] Motorola TPN1110B Power Supply question
I was just given a Motorola TPN1110B 25 amp power supply for use on the repeater. Currently I have a Astron 70 amp power supply online. When the repeater is keyed up, the meter shows a current draw of right at 25 amps. Will this power supply handle full duty cycle at 25 amps, or is it a 20 amp with 25 amp surge? There is nothing wrong with the Astron, just would much rather have a rack mounted power supply. Thanks. Mathew
RE: [Repeater-Builder] Motorola TPN1110B Power Supply question
Mathew, The Motorola TPN1110B power supply is rated at 25 amperes continuous, but will supply up to 35 amperes before losing regulation. It is designed to supply MICOR 100-watt continuous-duty stations, so it should be fine in your application. What make and model repeater do you have, and what power amplifier are you using? The ammeter on Astron power supplies is usually sampling the voltage drop across just one of the several emitter ballast resistors, and therefore is not a precision current reading. If you can lay your hands on a 50 ampere 50 millivolt shunt, you can use a good digital multimeter to read the millivolt drop, which is equivalent to amperes. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of n9lv Sent: Sunday, April 08, 2007 3:58 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola TPN1110B Power Supply question I was just given a Motorola TPN1110B 25 amp power supply for use on the repeater. Currently I have a Astron 70 amp power supply online. When the repeater is keyed up, the meter shows a current draw of right at 25 amps. Will this power supply handle full duty cycle at 25 amps, or is it a 20 amp with 25 amp surge? There is nothing wrong with the Astron, just would much rather have a rack mounted power supply. Thanks. Mathew
RE: [Repeater-Builder] Motorola TPN1110B Power Supply question
Thanks Eric, the repeater is a converted micor feeding a 200 watt vocom amp, there is also a 25 watt remote radio for 440 and then all the remote receivers, controller, weather radio, and that is about it. Mathew Eric Lemmon [EMAIL PROTECTED] wrote: Mathew, The Motorola TPN1110B power supply is rated at 25 amperes continuous, but will supply up to 35 amperes before losing regulation. It is designed to supply MICOR 100-watt continuous-duty stations, so it should be fine in your application. What make and model repeater do you have, and what power amplifier are you using? The ammeter on Astron power supplies is usually sampling the voltage drop across just one of the several emitter ballast resistors, and therefore is not a precision current reading. If you can lay your hands on a 50 ampere 50 millivolt shunt, you can use a good digital multimeter to read the millivolt drop, which is equivalent to amperes. 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of n9lv Sent: Sunday, April 08, 2007 3:58 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Motorola TPN1110B Power Supply question I was just given a Motorola TPN1110B 25 amp power supply for use on the repeater. Currently I have a Astron 70 amp power supply online. When the repeater is keyed up, the meter shows a current draw of right at 25 amps. Will this power supply handle full duty cycle at 25 amps, or is it a 20 amp with 25 amp surge? There is nothing wrong with the Astron, just would much rather have a rack mounted power supply. Thanks. Mathew - Bored stiff? Loosen up... Download and play hundreds of games for free on Yahoo! Games.
[Repeater-Builder] UHF Micor Exciter Output Level??
Hi Guys. What is the power output of the UHF Micor (VHF really) exciter BEFORE the 1st bandpass filter? What about AFTER the 1st bandpass filter? I have the manuals, and I know what they say, but I am looking for some real world data. I have got to be doing something wrong or all of my spare parts have gone south on the shelf. I am not at my wits end but I can see that it isn't too far away. Here is our story. We had this 75 watt UHF Micor repeater donated to us. The PA was bad. The fellow said that's it, I ain't fixing this thing again.We thought we would fix it, tune it on a new channel, and donate it to a fellow that is in need of new hardware. The PA was bad, I discovered that all of my spares were junk, or near junk. Then, the tripler takes a dump, replaced that... 1.7 watts out of the tripler, now we are getting somewhere. I go and hookup the controller, intermittent COS... cracked backplane solder joint, fixed that. A day has passed, and now I have no output, again. I backtrack and find only 10-15 milliwatts out of the exciter direct, less out of the 1st filter. I have tried two other exciters, on the original channel elements, one is dead, and the other has only 10 milliwatts out. How did Charlie Brown put it??? AGGGH Am I missing something. Perhaps I have been messing with the GE stuff too long. Thanks in advance.John
Re: [Repeater-Builder] UHF Micor Exciter Output Level??
One further thing: these are subject to intermittent pins connecting the back plane to the exciter interconnect board.. I have fixed many of these with excessive voltage drops on the exciter final 12 volt line pin, and the line connecting the 12 volts to the tripler.. also check the small plug that connects the tripler to the interconnect board.. another great piece of engineering! lance N2HBA - Original Message - From: John Everson To: Repeater-Builder@yahoogroups.com Sent: Sunday, April 08, 2007 10:42 PM Subject: [Repeater-Builder] UHF Micor Exciter Output Level?? Hi Guys. What is the power output of the UHF Micor (VHF really) exciter BEFORE the 1st bandpass filter? What about AFTER the 1st bandpass filter? I have the manuals, and I know what they say, but I am looking for some real world data. I have got to be doing something wrong or all of my spare parts have gone south on the shelf. I am not at my wits end but I can see that it isn't too far away. Here is our story. We had this 75 watt UHF Micor repeater donated to us. The PA was bad. The fellow said that's it, I ain't fixing this thing again.We thought we would fix it, tune it on a new channel, and donate it to a fellow that is in need of new hardware. The PA was bad, I discovered that all of my spares were junk, or near junk. Then, the tripler takes a dump, replaced that... 1.7 watts out of the tripler, now we are getting somewhere. I go and hookup the controller, intermittent COS... cracked backplane solder joint, fixed that. A day has passed, and now I have no output, again. I backtrack and find only 10-15 milliwatts out of the exciter direct, less out of the 1st filter. I have tried two other exciters, on the original channel elements, one is dead, and the other has only 10 milliwatts out. How did Charlie Brown put it??? AGGGH Am I missing something. Perhaps I have been messing with the GE stuff too long. Thanks in advance. John
Re: [Repeater-Builder] UHF Micor Exciter Output Level??
The exciter board makes about 500 mw, the tripler makes anywhere from 1.4 to 2.2watts, frequency dependant. - Original Message - From: John Everson To: Repeater-Builder@yahoogroups.com Sent: Sunday, April 08, 2007 10:42 PM Subject: [Repeater-Builder] UHF Micor Exciter Output Level?? Hi Guys. What is the power output of the UHF Micor (VHF really) exciter BEFORE the 1st bandpass filter? What about AFTER the 1st bandpass filter? I have the manuals, and I know what they say, but I am looking for some real world data. I have got to be doing something wrong or all of my spare parts have gone south on the shelf. I am not at my wits end but I can see that it isn't too far away. Here is our story. We had this 75 watt UHF Micor repeater donated to us. The PA was bad. The fellow said that's it, I ain't fixing this thing again.We thought we would fix it, tune it on a new channel, and donate it to a fellow that is in need of new hardware. The PA was bad, I discovered that all of my spares were junk, or near junk. Then, the tripler takes a dump, replaced that... 1.7 watts out of the tripler, now we are getting somewhere. I go and hookup the controller, intermittent COS... cracked backplane solder joint, fixed that. A day has passed, and now I have no output, again. I backtrack and find only 10-15 milliwatts out of the exciter direct, less out of the 1st filter. I have tried two other exciters, on the original channel elements, one is dead, and the other has only 10 milliwatts out. How did Charlie Brown put it??? AGGGH Am I missing something. Perhaps I have been messing with the GE stuff too long. Thanks in advance. John
[Repeater-Builder] Re: UHF Micor Exciter Output Level??
--- In Repeater-Builder@yahoogroups.com, John Everson [EMAIL PROTECTED] wrote: Hi Guys. What is the power output of the UHF Micor (VHF really) exciter BEFORE the 1st bandpass filter? What about AFTER the 1st bandpass filter? I have the manuals, and I know what they say, but I am looking for some real world data. I have got to be doing something wrong or all of my spare parts have gone south on the shelf. I am not at my wits end but I can see that it isn't too far away. Here is our story. We had this 75 watt UHF Micor repeater donated to us. The PA was bad. The fellow said that's it, I ain't fixing this thing again.We thought we would fix it, tune it on a new channel, and donate it to a fellow that is in need of new hardware. The PA was bad, I discovered that all of my spares were junk, or near junk. Then, the tripler takes a dump, replaced that... 1.7 watts out of the tripler, now we are getting somewhere. I go and hookup the controller, intermittent COS... cracked backplane solder joint, fixed that. A day has passed, and now I have no output, again. I backtrack and find only 10-15 milliwatts out of the exciter direct, less out of the 1st filter. I have tried two other exciters, on the original channel elements, one is dead, and the other has only 10 milliwatts out. How did Charlie Brown put it??? AGGGH Am I missing something. Perhaps I have been messing with the GE stuff too long. Thanks in advance.John I FOUND THE PROBLEM!!! It was the lack of keyed A- that the exciter gets from the Time Out Timer! The conversion instructions I was using did not address that. I went to the schematic and rooted around a bit. Checked the powers and groundsall present except for the keyed A-. Thanks for the response Lance. If you hadn't have motivated me to go back to the bench, I would have been on the couch watching ESPN talking about how lousy the Sacramento Kings are doing this year! 73 to all. John
