[Repeater-Builder] 2m repeater
Looking for someone local (54156) that may have or can build me a 2m mobile repeater.
[Repeater-Builder] 2m repeater
Looking for someone local (54156) that may have or can build me a 2m mobile repeater.
[Repeater-Builder] Re: how far
Sir thank you very much! Everything makes sense in the calculation and the range seems real to me. It came out 8.8 miles usable range --- In Repeater-Builder@yahoogroups.com, kevin valentino kevinvalent...@... wrote: Sent the program to George, Bon Hal. If anyone else wants a copy you can ask myself or them. Please do not post It in a file section on any groups, (I look in those), It's copyrighted. Â It's nothing fancy but does a fairly good job with some nice little utilities to boot. Old as dirt but hey I did'nt pay for it either. Â To the ones that get it, please let me know how you like it. I have another that's great for calculating transformers and other such good junk. Â Enjoy --- On Sat, 4/24/10, kevin valentino kevinvalent...@... wrote: From: kevin valentino kevinvalent...@... Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@yahoogroups.com Date: Saturday, April 24, 2010, 10:31 PM Â Allright just found the darn program. Was on an older machine. Norton picks up a virus, ARRGH, so i will remove it and send it to ypu. You can share this amongst yourselves but I would appreciate if you DID NOT upload it to any files section of ANY group , it is copyrighted. Back to removing the NYB, wish me luck --- On Sat, 4/24/10, kevin valentino kevinvalentino@ sbcglobal. net wrote: From: kevin valentino kevinvalentino@ sbcglobal. net Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 9:00 PM Â OK there is a cute little program that actually comes fairly close to calculating effective radio range based on height, power, line loss(has a cable database), and frequency. Add the cavity losses in with the line loss. Calculate the portable at 6 feet, unity gain, using worst case terrain type scenario. I will send it to you. --- On Sat, 4/24/10, George gueorg...@yahoo. com wrote: From: George gueorg...@yahoo. com Subject: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 8:43 PM Â ok the antenna is from cell site 14dbm 4-element in a plastic housing, the amplifier is 600 watts capable linear mosfet 8element hybrid splitters and combiners... but the power supply is up to 65 ampers at 24 volts, driven by a C class 130 watt amplifier. the antenna is not on a commercial tower (no luck here). 20 feet above the house. the line is heliax andrew semi-rigid. the repeater is in the attic and the line is 30feet. the duplexer is celwave doesn't like more than 450 watts in. --- In Repeater-Builder@ yahoogroups. com, kevin valentino kevinvalentino@ ... wrote: Any approximation would depend on the repeater antenna height and the terrain of the area. I would hate to see the price tag on an 800MHZ 450W amplifier :-) I do mean literally approximation. Many factors come into play. Especially at high frequencies. The length and type of the antenna feedline, gain of antenna used, etc. --- On Sat, 4/24/10, George gueorgui2@ .. wrote: From: George gueorgui2@ .. Subject: [Repeater-Builder] how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 7:24 PM ÃÂ what is the range of a 800mhz handheld 4watts with msf5000 repeater 450watts on the antena
Re: [Repeater-Builder] Re: how far
It's real handy and easy to use. Actually comes pretty darn close. You're very welcome --- On Sun, 4/25/10, George gueorg...@yahoo.com wrote: From: George gueorg...@yahoo.com Subject: [Repeater-Builder] Re: how far To: Repeater-Builder@yahoogroups.com Date: Sunday, April 25, 2010, 8:20 AM Sir thank you very much! Everything makes sense in the calculation and the range seems real to me. It came out 8.8 miles usable range --- In Repeater-Builder@ yahoogroups. com, kevin valentino kevinvalentino@ ... wrote: Sent the program to George, Bon Hal. If anyone else wants a copy you can ask myself or them. Please do not post It in a file section on any groups, (I look in those), It's copyrighted.  It's nothing fancy but does a fairly good job with some nice little utilities to boot. Old as dirt but hey I did'nt pay for it either.  To the ones that get it, please let me know how you like it. I have another that's great for calculating transformers and other such good junk.  Enjoy --- On Sat, 4/24/10, kevin valentino kevinvalentino@ ... wrote: From: kevin valentino kevinvalentino@ ... Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 10:31 PM  Allright just found the darn program. Was on an older machine. Norton picks up a virus, ARRGH, so i will remove it and send it to ypu. You can share this amongst yourselves but I would appreciate if you DID NOT upload it to any files section of ANY group , it is copyrighted. Back to removing the NYB, wish me luck --- On Sat, 4/24/10, kevin valentino kevinvalentino@ sbcglobal. net wrote: From: kevin valentino kevinvalentino@ sbcglobal. net Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 9:00 PM  OK there is a cute little program that actually comes fairly close to calculating effective radio range based on height, power, line loss(has a cable database), and frequency. Add the cavity losses in with the line loss. Calculate the portable at 6 feet, unity gain, using worst case terrain type scenario. I will send it to you. --- On Sat, 4/24/10, George gueorg...@yahoo. com wrote: From: George gueorg...@yahoo. com Subject: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 8:43 PM  ok the antenna is from cell site 14dbm 4-element in a plastic housing, the amplifier is 600 watts capable linear mosfet 8element hybrid splitters and combiners... but the power supply is up to 65 ampers at 24 volts, driven by a C class 130 watt amplifier. the antenna is not on a commercial tower (no luck here). 20 feet above the house. the line is heliax andrew semi-rigid. the repeater is in the attic and the line is 30feet. the duplexer is celwave doesn't like more than 450 watts in. --- In Repeater-Builder@ yahoogroups. com, kevin valentino kevinvalentino@ ... wrote: Any approximation would depend on the repeater antenna height and the terrain of the area. I would hate to see the price tag on an 800MHZ 450W amplifier :-) I do mean literally approximation. Many factors come into play. Especially at high frequencies. The length and type of the antenna feedline, gain of antenna used, etc. --- On Sat, 4/24/10, George gueorgui2@ .. wrote: From: George gueorgui2@ .. Subject: [Repeater-Builder] how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 7:24 PM  what is the range of a 800mhz handheld 4watts with msf5000 repeater 450watts on the antena
Re: [Repeater-Builder] 2m repeater
Just get a couple Maxtrac or Radius 16 pin radios and a $10 uni-directional 16 pin cable from Kawamall on ebay. They ship from the USA.. If youre not using a duplexer, l brkt on each side of trunk works fairly well. --- On Sun, 4/25/10, Randy randy54...@yahoo.com wrote: From: Randy randy54...@yahoo.com Subject: [Repeater-Builder] 2m repeater To: Repeater-Builder@yahoogroups.com Date: Sunday, April 25, 2010, 5:03 AM Looking for someone local (54156) that may have or can build me a 2m mobile repeater.
Re: [Repeater-Builder] Re: Pager Interference Revisited
The biggest problem is that testing the cable system in one area only gives you info from that area node to the active amps up to the point where you are connected. Any downstream amps won't show up. And there could be a LOT of nodes in a cable system. Chuck WB2EDV - Original Message - From: Mike Besemer (WM4B) To: Repeater-Builder@yahoogroups.com Sent: Saturday, April 24, 2010 11:01 PM Subject: RE: [Repeater-Builder] Re: Pager Interference Revisited You're reading my mind, Gary! 73, Mike WM4B -- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Gary Schafer Sent: Saturday, April 24, 2010 10:59 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Pager Interference Revisited Just for grins, find a place (house) to hook your spectrum analyzer up to the local cable system and see if it is on there. 73 Gary K4FMX -- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike Besemer (WM4B) Sent: Saturday, April 24, 2010 6:15 PM To: Repeater-Builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: Pager Interference Revisited Problem is Milt, the darn signal level varies like crazy from day to day and location to location. I can be in a certain spot and receive the signal very well, drive until it disappears, and then have it reappear at a high level as I continue on. Obviously elevation and blockage has a lot to do with that, but it actually does that to the point of being ridiculous. almost like it moves. I have been wondering if one of the pole-mounted CATV amps is going crazy and the stuff is squirting out of the CATV system every place it leaks. Sure wish we'd get a trace of audio (besides the pager) on the darn thing. This is gonna drive us nuts before we're done. I'm hearing the stupid thing in my sleep! 73, Mike WM4B From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Milt Sent: Saturday, April 24, 2010 5:27 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: Pager Interference Revisited OK, this is probably not going to be an easy one. I have seen several instances of mast-mounted TV preamps oscillating and acting as miniature transmitters capable of sweeping over wide swaths of spectrum as the temperature changes. They usually exhibit a raw AC buzz on the signal. They are almost never active when the weather is cold, only coming active as the ambient temperature rises. Usually were fed with twin lead. Your description of the audio seems to put that possibility pretty far down the list. At this point I would probably want to look at the incoming signals on the repeater with a spectrum analyser and see if you can quantify the level of the incoming interference signals. If the interference level is high enough you should be able to hear it and maybe track it with a service monitor that can be run off of 12v in a mobile. Since you can call a number on one of the transmitters you can control things a bit. Good luck hunting. Milt - Original Message - From: Mike Besemer (WM4B) To: Repeater-Builder@yahoogroups.com Sent: Saturday, April 24, 2010 4:42 PM Subject: RE: [Repeater-Builder] Re: Pager Interference Revisited Milt, Not sure what you mean by 'come and go'. It's there when the pager transmitter is up, gone when it's not. It also comes and goes with heat and sun. we may have days with no interference if it's cool and cloudy or just plain cold. Rain makes no difference. Nothing remarkable about the audio. sounds like clean, clear paging tones. Never heard anything els There is an abundance of TV stations, DTV, translators, AM, FM. you name it. The paging signals are both, depending on which site it's coming from. I can get my hands on pretty much anything I need. Spectrum analyzer is no problem. I have a good 'connection'. Did some hunting with a spectrum analyzer last year to no avail, but now that I have the ability to call the system and have it send out a page we have a little better advantage. I'd call the area 'populated', but not 'urban'. Mostly housing around the site, but plenty of industry (and towers) visible from the top of the water tank. (We are, by the way, the only user on the tank.) From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Milt Sent: Saturday, April 24, 2010 4:19 PM To:
RE: [Repeater-Builder] Re: how far
1 more request for your program. Thanks, Dan KF8DB To: Repeater-Builder@yahoogroups.com From: kevinvalent...@sbcglobal.net Date: Sat, 24 Apr 2010 21:40:17 -0700 Subject: Re: [Repeater-Builder] Re: how far Sent the program to George, Bon Hal. If anyone else wants a copy you can ask myself or them. Please do not post It in a file section on any groups, (I look in those), It's copyrighted. It's nothing fancy but does a fairly good job with some nice little utilities to boot. Old as dirt but hey I did'nt pay for it either. To the ones that get it, please let me know how you like it. I have another that's great for calculating transformers and other such good junk. Enjoy --- On Sat, 4/24/10, kevin valentino kevinvalent...@sbcglobal.net wrote: From: kevin valentino kevinvalent...@sbcglobal.net Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@yahoogroups.com Date: Saturday, April 24, 2010, 10:31 PM Allright just found the darn program. Was on an older machine. Norton picks up a virus, ARRGH, so i will remove it and send it to ypu. You can share this amongst yourselves but I would appreciate if you DID NOT upload it to any files section of ANY group , it is copyrighted. Back to removing the NYB, wish me luck --- On Sat, 4/24/10, kevin valentino kevinvalentino@ sbcglobal. net wrote: From: kevin valentino kevinvalentino@ sbcglobal. net Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 9:00 PM OK there is a cute little program that actually comes fairly close to calculating effective radio range based on height, power, line loss(has a cable database), and frequency. Add the cavity losses in with the line loss. Calculate the portable at 6 feet, unity gain, using worst case terrain type scenario. I will send it to you. --- On Sat, 4/24/10, George gueorg...@yahoo. com wrote: From: George gueorg...@yahoo. com Subject: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 8:43 PM ok the antenna is from cell site 14dbm 4-element in a plastic housing, the amplifier is 600 watts capable linear mosfet 8element hybrid splitters and combiners... but the power supply is up to 65 ampers at 24 volts, driven by a C class 130 watt amplifier. the antenna is not on a commercial tower (no luck here). 20 feet above the house. the line is heliax andrew semi-rigid. the repeater is in the attic and the line is 30feet. the duplexer is celwave doesn't like more than 450 watts in. --- In Repeater-Builder@ yahoogroups. com, kevin valentino kevinvalentino@ ... wrote: Any approximation would depend on the repeater antenna height and the terrain of the area. I would hate to see the price tag on an 800MHZ 450W amplifier :-) I do mean literally approximation. Many factors come into play. Especially at high frequencies. The length and type of the antenna feedline, gain of antenna used, etc. --- On Sat, 4/24/10, George gueorg...@. .. wrote: From: George gueorg...@. .. Subject: [Repeater-Builder] how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 7:24 PM Â what is the range of a 800mhz handheld 4watts with msf5000 repeater 450watts on the antena
Re: [Repeater-Builder] Re: IFR 1000s
At 4/24/2010 20:20, you wrote: Jim, Try this guy, Kurt Gruber. kurtgru...@yahoo.com That should be kurtgra...@yahoo.com. Bob NO6B
RE: [Repeater-Builder] Re: how far
Ok gents my fingers are getting tired now. If someone wants to hex edit the pertinent info, I'm sure it can be placed somewhere. I am sure the copyright has expired by now. It's an old dos program, but extremely useful. I had it on my original 386. --- On Sun, 4/25/10, daniel haines ridet...@hotmail.com wrote: From: daniel haines ridet...@hotmail.com Subject: RE: [Repeater-Builder] Re: how far To: repeater-builder@yahoogroups.com Date: Sunday, April 25, 2010, 9:30 AM 1 more request for your program. Thanks, Dan KF8DB To: Repeater-Builder@ yahoogroups. com From: kevinvalentino@ sbcglobal. net Date: Sat, 24 Apr 2010 21:40:17 -0700 Subject: Re: [Repeater-Builder] Re: how far Sent the program to George, Bon Hal. If anyone else wants a copy you can ask myself or them. Please do not post It in a file section on any groups, (I look in those), It's copyrighted. It's nothing fancy but does a fairly good job with some nice little utilities to boot. Old as dirt but hey I did'nt pay for it either. To the ones that get it, please let me know how you like it. I have another that's great for calculating transformers and other such good junk. Enjoy --- On Sat, 4/24/10, kevin valentino kevinvalentino@ sbcglobal. net wrote: From: kevin valentino kevinvalentino@ sbcglobal. net Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 10:31 PM Allright just found the darn program. Was on an older machine. Norton picks up a virus, ARRGH, so i will remove it and send it to ypu. You can share this amongst yourselves but I would appreciate if you DID NOT upload it to any files section of ANY group , it is copyrighted. Back to removing the NYB, wish me luck --- On Sat, 4/24/10, kevin valentino kevinvalentino@ sbcglobal. net wrote: From: kevin valentino kevinvalentino@ sbcglobal. net Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 9:00 PM OK there is a cute little program that actually comes fairly close to calculating effective radio range based on height, power, line loss(has a cable database), and frequency. Add the cavity losses in with the line loss. Calculate the portable at 6 feet, unity gain, using worst case terrain type scenario. I will send it to you. --- On Sat, 4/24/10, George gueorg...@yahoo. com wrote: From: George gueorg...@yahoo. com Subject: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 8:43 PM ok the antenna is from cell site 14dbm 4-element in a plastic housing, the amplifier is 600 watts capable linear mosfet 8element hybrid splitters and combiners... but the power supply is up to 65 ampers at 24 volts, driven by a C class 130 watt amplifier. the antenna is not on a commercial tower (no luck here). 20 feet above the house. the line is heliax andrew semi-rigid. the repeater is in the attic and the line is 30feet. the duplexer is celwave doesn't like more than 450 watts in. --- In Repeater-Builder@ yahoogroups. com, kevin valentino kevinvalentino@ ... wrote: Any approximation would depend on the repeater antenna height and the terrain of the area. I would hate to see the price tag on an 800MHZ 450W amplifier :-) I do mean literally approximation. Many factors come into play. Especially at high frequencies. The length and type of the antenna feedline, gain of antenna used, etc. --- On Sat, 4/24/10, George gueorg...@. .. wrote: From: George gueorg...@. .. Subject: [Repeater-Builder] how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 7:24 PM Â what is the range of a 800mhz handheld 4watts with msf5000 repeater 450watts on the antena
RE: [Repeater-Builder] Re: how far
And one more please W6AMS Andy Thanks From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of daniel haines Sent: Sunday, April 25, 2010 6:31 AM To: repeater-builder@yahoogroups.com Subject: RE: [Repeater-Builder] Re: how far 1 more request for your program. Thanks, Dan KF8DB To: Repeater-Builder@yahoogroups.com From: kevinvalent...@sbcglobal.net Date: Sat, 24 Apr 2010 21:40:17 -0700 Subject: Re: [Repeater-Builder] Re: how far Sent the program to George, Bon Hal. If anyone else wants a copy you can ask myself or them. Please do not post It in a file section on any groups, (I look in those), It's copyrighted. It's nothing fancy but does a fairly good job with some nice little utilities to boot. Old as dirt but hey I did'nt pay for it either. To the ones that get it, please let me know how you like it. I have another that's great for calculating transformers and other such good junk. Enjoy --- On Sat, 4/24/10, kevin valentino kevinvalent...@sbcglobal.net wrote: From: kevin valentino kevinvalent...@sbcglobal.net Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@yahoogroups.com Date: Saturday, April 24, 2010, 10:31 PM Allright just found the darn program. Was on an older machine. Norton picks up a virus, ARRGH, so i will remove it and send it to ypu. You can share this amongst yourselves but I would appreciate if you DID NOT upload it to any files section of ANY group , it is copyrighted. Back to removing the NYB, wish me luck --- On Sat, 4/24/10, kevin valentino kevinvalentino@ sbcglobal. net wrote: From: kevin valentino kevinvalentino@ sbcglobal. net Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 9:00 PM OK there is a cute little program that actually comes fairly close to calculating effective radio range based on height, power, line loss(has a cable database), and frequency. Add the cavity losses in with the line loss. Calculate the portable at 6 feet, unity gain, using worst case terrain type scenario. I will send it to you. --- On Sat, 4/24/10, George gueorg...@yahoo. com wrote: From: George gueorg...@yahoo. com Subject: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 8:43 PM ok the antenna is from cell site 14dbm 4-element in a plastic housing, the amplifier is 600 watts capable linear mosfet 8element hybrid splitters and combiners... but the power supply is up to 65 ampers at 24 volts, driven by a C class 130 watt amplifier. the antenna is not on a commercial tower (no luck here). 20 feet above the house. the line is heliax andrew semi-rigid. the repeater is in the attic and the line is 30feet. the duplexer is celwave doesn't like more than 450 watts in. --- In Repeater-Builder@ yahoogroups. com http://us.mc837.mail.yahoo.com/mc/compose?to=repeater-buil...@yahoogroups.com , kevin valentino kevinvalentino@ ... wrote: Any approximation would depend on the repeater antenna height and the terrain of the area. I would hate to see the price tag on an 800MHZ 450W amplifier :-) I do mean literally approximation. Many factors come into play. Especially at high frequencies. The length and type of the antenna feedline, gain of antenna used, etc. --- On Sat, 4/24/10, George gueorg...@. .. wrote: From: George gueorg...@. .. Subject: [Repeater-Builder] how far To: Repeater-Builder@ yahoogroups. com http://us.mc837.mail.yahoo.com/mc/compose?to=repeater-buil...@yahoogroups.com Date: Saturday, April 24, 2010, 7:24 PM Â what is the range of a 800mhz handheld 4watts with msf5000 repeater 450watts on the antena
RE: [Repeater-Builder] Re: how far
Can you send me a copy of the program,please? Thanks, a...@n7tgb.net Richard www.n7tgb.net The problem with socialism is that eventually you run out of other people's money --Margaret Thatcher _ From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of kevin valentino Sent: Saturday, April 24, 2010 9:40 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Re: how far Sent the program to George, Bon Hal. If anyone else wants a copy you can ask myself or them. Please do not post It in a file section on any groups, (I look in those), It's copyrighted. It's nothing fancy but does a fairly good job with some nice little utilities to boot. Old as dirt but hey I did'nt pay for it either. To the ones that get it, please let me know how you like it. I have another that's great for calculating transformers and other such good junk. Enjoy --- On Sat, 4/24/10, kevin valentino kevinvalent...@sbcglobal.net wrote: From: kevin valentino kevinvalent...@sbcglobal.net Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@yahoogroups.com Date: Saturday, April 24, 2010, 10:31 PM Allright just found the darn program. Was on an older machine. Norton picks up a virus, ARRGH, so i will remove it and send it to ypu. You can share this amongst yourselves but I would appreciate if you DID NOT upload it to any files section of ANY group , it is copyrighted. Back to removing the NYB, wish me luck --- On Sat, 4/24/10, kevin valentino kevinvalentino@ sbcglobal. net wrote: From: kevin valentino kevinvalentino@ sbcglobal. net Subject: Re: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 9:00 PM OK there is a cute little program that actually comes fairly close to calculating effective radio range based on height, power, line loss(has a cable database), and frequency. Add the cavity losses in with the line loss. Calculate the portable at 6 feet, unity gain, using worst case terrain type scenario. I will send it to you. --- On Sat, 4/24/10, George gueorg...@yahoo. com wrote: From: George gueorg...@yahoo. com Subject: [Repeater-Builder] Re: how far To: Repeater-Builder@ yahoogroups. com Date: Saturday, April 24, 2010, 8:43 PM ok the antenna is from cell site 14dbm 4-element in a plastic housing, the amplifier is 600 watts capable linear mosfet 8element hybrid splitters and combiners... but the power supply is up to 65 ampers at 24 volts, driven by a C class 130 watt amplifier. the antenna is not on a commercial tower (no luck here). 20 feet above the house. the line is heliax andrew semi-rigid. the repeater is in the attic and the line is 30feet. the duplexer is celwave doesn't like more than 450 watts in. --- In Repeater-Builder@ http://us.mc837.mail.yahoo.com/mc/compose?to=Repeater-Builder%40yahoogroups .com yahoogroups. com, kevin valentino kevinvalentino@ ... wrote: Any approximation would depend on the repeater antenna height and the terrain of the area. I would hate to see the price tag on an 800MHZ 450W amplifier :-) I do mean literally approximation. Many factors come into play. Especially at high frequencies. The length and type of the antenna feedline, gain of antenna used, etc. --- On Sat, 4/24/10, George gueorg...@. .. wrote: From: George gueorg...@. .. Subject: [Repeater-Builder] how far To: Repeater-Builder@ http://us.mc837.mail.yahoo.com/mc/compose?to=Repeater-Builder%40yahoogroups .com yahoogroups. com Date: Saturday, April 24, 2010, 7:24 PM Â what is the range of a 800mhz handheld 4watts with msf5000 repeater 450watts on the antena
[Repeater-Builder] GE amp
Hi everyone. I went to the Des Moines Hamfest and one of the bargins I brought home was a GE amp that was to be a UHF 75 watt. I am thinking it is not but wanted to seek your input. Inside it is marked 19D424266G1 and also 424583G4. I did a search and it looks like it is maybe a 110 vhf instead. Anyone familiar with this and know what it is before I power it up and see where it likes to play? Thanks for any insite. Larry WA0VUS Iowa
[Repeater-Builder] Trade
Up for trade NIB Maxon SP-200 w/rapid charger NIB SP-310 w/rapid charger(Less wall wart)got lost somewhere. 15v at 1 amp. Both 4 ch. Batteries excellent.(NiMH) Wanting a portable w/display that will do 2 meter and business to get my buddy his ticket and also let him use my VHF business band. Got nothin layin around myself,any takers? I know a GP300 or P110 will fit the bill but it would be easier for him with a display of frequency or channel name. Had an old Shinwa but gave it away. It's so true when you ditch something you have'nt used for years and then you need it :-) email me direct if interested. Thanx!
RE: [Repeater-Builder] GE amp
Larry, It is a 100/110 watt PA for 138-174 MHz. It is covered by LBI-30739, here: www.repeater-builder.com/ge/lbi-library/lbi-30739g.pdf 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of wa0vus Sent: Sunday, April 25, 2010 7:31 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] GE amp Hi everyone. I went to the Des Moines Hamfest and one of the bargins I brought home was a GE amp that was to be a UHF 75 watt. I am thinking it is not but wanted to seek your input. Inside it is marked 19D424266G1 and also 424583G4. I did a search and it looks like it is maybe a 110 vhf instead. Anyone familiar with this and know what it is before I power it up and see where it likes to play? Thanks for any insight. Larry WA0VUS Iowa
[Repeater-Builder] Re: how far
Sounds like George might be living in a microwave oven. Maybe time to do an RF exposure test? Al, K9SI Re: how far Posted by: George gueorg...@yahoo.com gueorgui2 Date: Sat Apr 24, 2010 5:45 pm ((PDT)) ok the antenna is from cell site 14dbm 4-element in a plastic housing, the amplifier is 600 watts capable linear mosfet 8element hybrid splitters and combiners... but the power supply is up to 65 ampers at 24 volts, driven by a C class 130 watt amplifier. the antenna is not on a commercial tower (no luck here). 20 feet above the house. the line is heliax andrew semi-rigid. the repeater is in the attic and the line is 30feet. the duplexer is celwave doesn't like more than 450 watts in.
[Repeater-Builder] Re: how far
what do you mean...a cell site in the city radiates much more times than my antenna, its on the same level and shoots directly in peoples houses... --- In Repeater-Builder@yahoogroups.com, Al Wolfe k...@... wrote: Sounds like George might be living in a microwave oven. Maybe time to do an RF exposure test? Al, K9SI Re: how far Posted by: George gueorg...@... gueorgui2 Date: Sat Apr 24, 2010 5:45 pm ((PDT)) ok the antenna is from cell site 14dbm 4-element in a plastic housing, the amplifier is 600 watts capable linear mosfet 8element hybrid splitters and combiners... but the power supply is up to 65 ampers at 24 volts, driven by a C class 130 watt amplifier. the antenna is not on a commercial tower (no luck here). 20 feet above the house. the line is heliax andrew semi-rigid. the repeater is in the attic and the line is 30feet. the duplexer is celwave doesn't like more than 450 watts in.
[Repeater-Builder] Helper Sinadder Linear 5 manual ?
Hi all, I am new to this excellent group and noticed that some members use Helper Sinadders. I have an early Helper SL-101 and recently purchased the Helper Sinnadder 'Linear 5' (SL-105?) model. Having searched the internet I have managed to find a manual for the SL-103 on the repeater builder website but no sign of a manual for the Linear 5. Does anyone know the differences (if any) between an SL-103 and the Linear 5 (SL-105?). Directions to a source of the Linear 5 or similar CML-1 manual would also be greatly appreciated. I also own the Helper RF Millivoltmeter RF801 and Matchbox MB800 if anyone needs scans of the manuals for these. Kind regards to all Fraser
Re: [Repeater-Builder] Re: how far
Depending on the frequency of the site, they might only be putting out 5 watts of transmit power. Rural sites run more power, and taller antennas to get better range. In a City, they just don't need or want huge amounts of power because it will prevent reuse of the frquencies or cause what's called pilot pollution. From: George gueorg...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Sun, April 25, 2010 2:13:22 PM Subject: [Repeater-Builder] Re: how far what do you mean...a cell site in the city radiates much more times than my antenna, its on the same level and shoots directly in peoples houses... --- In Repeater-Builder@yahoogroups.com, Al Wolfe k...@... wrote: Sounds like George might be living in a microwave oven. Maybe time to do an RF exposure test? Al, K9SI Re: how far Posted by: George gueorg...@... gueorgui2 Date: Sat Apr 24, 2010 5:45 pm ((PDT)) ok the antenna is from cell site 14dbm 4-element in a plastic housing, the amplifier is 600 watts capable linear mosfet 8element hybrid splitters and combiners... but the power supply is up to 65 ampers at 24 volts, driven by a C class 130 watt amplifier. the antenna is not on a commercial tower (no luck here). 20 feet above the house. the line is heliax andrew semi-rigid. the repeater is in the attic and the line is 30feet. the duplexer is celwave doesn't like more than 450 watts in. Yahoo! Groups Links http://docs.yahoo.com/info/terms/
[Repeater-Builder] Re: how far
this is wrong: the amplifier that i use is linear rated at 90 watts running digital multicarier...there are arround 20 amplifiers inside the site. pointing 120 degrees in a triangular pattern with 9 or more antennas like mine are emitting arround 2kw on one level only. the towers are two or three levels for different freqzs...there is big diesel generator in the site's yard that supplys the site in case of power outage. --- In Repeater-Builder@yahoogroups.com, Bill Smith brsc...@... wrote: Depending on the frequency of the site, they might only be putting out 5 watts of transmit power. Rural sites run more power, and taller antennas to get better range. In a City, they just don't need or want huge amounts of power because it will prevent reuse of the frquencies or cause what's called pilot pollution. From: George gueorg...@... To: Repeater-Builder@yahoogroups.com Sent: Sun, April 25, 2010 2:13:22 PM Subject: [Repeater-Builder] Re: how far what do you mean...a cell site in the city radiates much more times than my antenna, its on the same level and shoots directly in peoples houses... --- In Repeater-Builder@yahoogroups.com, Al Wolfe k9si@ wrote: Sounds like George might be living in a microwave oven. Maybe time to do an RF exposure test? Al, K9SI Re: how far Posted by: George gueorgui2@ gueorgui2 Date: Sat Apr 24, 2010 5:45 pm ((PDT)) ok the antenna is from cell site 14dbm 4-element in a plastic housing, the amplifier is 600 watts capable linear mosfet 8element hybrid splitters and combiners... but the power supply is up to 65 ampers at 24 volts, driven by a C class 130 watt amplifier. the antenna is not on a commercial tower (no luck here). 20 feet above the house. the line is heliax andrew semi-rigid. the repeater is in the attic and the line is 30feet. the duplexer is celwave doesn't like more than 450 watts in. Yahoo! Groups Links http://docs.yahoo.com/info/terms/
Re: [Repeater-Builder] Re: how far
The typical cell site is probably running a 10 watt amplifier with an ERP of about 100 watts. City sites probably a lot less power. Your in the high power paging transmitter class. Physical damage can be done in the nearby horizontal field of the antenna using this much power and antenna gain. Joe On 4/25/2010 3:13 PM, George wrote: what do you mean...a cell site in the city radiates much more times than my antenna, its on the same level and shoots directly in peoples houses...
[Repeater-Builder] Re: how far
well this amplifier is rated 90 watts you can see it on e-bay just type powerwave in the search. it has error eliminating computer inside and no distortion what so ever. i have it modified and use it at 450 watts and i pushed it with two power supplys that can put more than 120 ampers at 24 volts. the antenna is rated at 500 watts... i wonder why woud they do that...just to put out 5 watts? --- In Repeater-Builder@yahoogroups.com, Joe k1ike_m...@... wrote: The typical cell site is probably running a 10 watt amplifier with an ERP of about 100 watts. City sites probably a lot less power. Your in the high power paging transmitter class. Physical damage can be done in the nearby horizontal field of the antenna using this much power and antenna gain. Joe On 4/25/2010 3:13 PM, George wrote: what do you mean...a cell site in the city radiates much more times than my antenna, its on the same level and shoots directly in peoples houses...
Re: [Repeater-Builder] Re: how far
With all due respect, I think the question most have in their minds is what are you doing that requires 450 watts at 800 MHz? Chuck WB2EDV - Original Message - From: George gueorg...@yahoo.com To: Repeater-Builder@yahoogroups.com Sent: Sunday, April 25, 2010 4:08 PM Subject: [Repeater-Builder] Re: how far well this amplifier is rated 90 watts you can see it on e-bay just type powerwave in the search. it has error eliminating computer inside and no distortion what so ever. i have it modified and use it at 450 watts and i pushed it with two power supplys that can put more than 120 ampers at 24 volts. the antenna is rated at 500 watts... i wonder why woud they do that...just to put out 5 watts? --- In Repeater-Builder@yahoogroups.com, Joe k1ike_m...@... wrote: The typical cell site is probably running a 10 watt amplifier with an ERP of about 100 watts. City sites probably a lot less power. Your in the high power paging transmitter class. Physical damage can be done in the nearby horizontal field of the antenna using this much power and antenna gain. Joe
Re: [Repeater-Builder] Re: how far
Your saying that you took a 90 watt amp and modified it to 450 watts? This does not sound believable... The amp you have is possibly a B band analog amp. 90 watts may have been used at the cell site to overcome the combining losses that are involved in putting multiple transmitters on a single cellular antenna. The ERP would probably have still been around 100 watts. You have to have a balance between the cell site transmit power and the cellphone transmit power to make the system work. The paging industry used ERP upwards to 2KW or more to talk to a pager, but that was usually a one-way transmission. Joe Joe On 4/25/2010 4:08 PM, George wrote: well this amplifier is rated 90 watts you can see it on e-bay just type powerwave in the search. it has error eliminating computer inside and no distortion what so ever. i have it modified and use it at 450 watts and i pushed it with two power supplys that can put more than 120 ampers at 24 volts. the antenna is rated at 500 watts... i wonder why woud they do that...just to put out 5 watts? .
[Repeater-Builder] Re: how far
i'll give you the answer: i don't have commertial tower, that is why the high power at the antenna, that is why the high gain from the antenna for receiving, that is why the line is 7/8 heliax foam 30 feet long, that is why a siclair antenna amplifier between the duplexer and the msf5000, now, my car has a 45watt remote installed spectra, modified to use 150 watt C class amplifier and receiving antenna separated from the transmitting antenna, that is why i am using 4 watt MTS2000 all over the city and that is why i ask questions here how far and am i in the ball park with the range of my setup --- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote: With all due respect, I think the question most have in their minds is what are you doing that requires 450 watts at 800 MHz? Chuck WB2EDV - Original Message - From: George gueorg...@... To: Repeater-Builder@yahoogroups.com Sent: Sunday, April 25, 2010 4:08 PM Subject: [Repeater-Builder] Re: how far well this amplifier is rated 90 watts you can see it on e-bay just type powerwave in the search. it has error eliminating computer inside and no distortion what so ever. i have it modified and use it at 450 watts and i pushed it with two power supplys that can put more than 120 ampers at 24 volts. the antenna is rated at 500 watts... i wonder why woud they do that...just to put out 5 watts? --- In Repeater-Builder@yahoogroups.com, Joe k1ike_mail@ wrote: The typical cell site is probably running a 10 watt amplifier with an ERP of about 100 watts. City sites probably a lot less power. Your in the high power paging transmitter class. Physical damage can be done in the nearby horizontal field of the antenna using this much power and antenna gain. Joe
[Repeater-Builder] Re: how far
the amplifier is class AB and is 8 mosfet transistors beautifuly engeneered to split and combine the power inside the amp...there are impedance balancing ciquits to keep the power properly distributed from the input amplfied and outputted to the duplexer or site combiner. now this amp runs far bellow it's capabilities just for the sake of the distortions that can occure from amplfying...moreover there is error ellimminating computer for the input signal just for the sake of linearity and error and distortion free output from this beast! yo know that this is important for digital communication i am using it at it's power capabilities because is analog and does not matter the errors if the carrier that is carring my vice and the TPL. --- In Repeater-Builder@yahoogroups.com, Joe k1ike_m...@... wrote: Your saying that you took a 90 watt amp and modified it to 450 watts? This does not sound believable... The amp you have is possibly a B band analog amp. 90 watts may have been used at the cell site to overcome the combining losses that are involved in putting multiple transmitters on a single cellular antenna. The ERP would probably have still been around 100 watts. You have to have a balance between the cell site transmit power and the cellphone transmit power to make the system work. The paging industry used ERP upwards to 2KW or more to talk to a pager, but that was usually a one-way transmission. Joe Joe On 4/25/2010 4:08 PM, George wrote: well this amplifier is rated 90 watts you can see it on e-bay just type powerwave in the search. it has error eliminating computer inside and no distortion what so ever. i have it modified and use it at 450 watts and i pushed it with two power supplys that can put more than 120 ampers at 24 volts. the antenna is rated at 500 watts... i wonder why woud they do that...just to put out 5 watts? .
Re: [Repeater-Builder] Re: how far
I think your original post said that your antenna would be about 30-40 feet off the ground. Unfortunately, power cannot make up for a low antenna very well. You would need to get your antenna above the surrounding structures and foliage to have an effective system. If your house is on a bald hill with nothing around it, your plan may work very well. If you are surrounded by buildings and trees it may not. The only thing would be to fire it up and see what happens. Just be careful. At the ERP antenna output levels that you are playing with and frequencies involved, things can get dangerous for human exposure. Joe On 4/25/2010 4:29 PM, George wrote: i'll give you the answer: i don't have commertial tower, that is why the high power at the antenna, that is why the high gain from the antenna for receiving, that is why the line is 7/8 heliax foam 30 feet long, that is why a siclair antenna amplifier between the duplexer and the msf5000, now, my car has a 45watt remote installed spectra, modified to use 150 watt C class amplifier and receiving antenna separated from the transmitting antenna, that is why i am using 4 watt MTS2000 all over the city and that is why i ask questions here how far and am i in the ball park with the range of my setup
RE: [Repeater-Builder] Re: how far
It sounds like you have a linear amplifier. Linear amplifiers are used when multiple low power transmitters are to be amplified by one amplifier. The peak power (actually peak envelope power) capability of the amplifier must be quite high in order to handle the multiple signals without generating intermodultion distortion. The peak envelope power increases by the square of the number of signals going into the amp. N^2 * power Example: two 5 watt signals into the amplifier have a peak envelope power of 20 watts. Three have a PEP of 45 watts. Ten 5 watt signals works out to a PEP of 500 watts. (10^2 = 100*5 watts = 500 watts pep) So if you have ten 5 watt transmitters fed into the amplifier the amplifier must be capable of 500 watts PEP. 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of George Sent: Sunday, April 25, 2010 4:08 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: how far well this amplifier is rated 90 watts you can see it on e-bay just type powerwave in the search. it has error eliminating computer inside and no distortion what so ever. i have it modified and use it at 450 watts and i pushed it with two power supplys that can put more than 120 ampers at 24 volts. the antenna is rated at 500 watts... i wonder why woud they do that...just to put out 5 watts? --- In Repeater-Builder@yahoogroups.com, Joe k1ike_m...@... wrote: The typical cell site is probably running a 10 watt amplifier with an ERP of about 100 watts. City sites probably a lot less power. Your in the high power paging transmitter class. Physical damage can be done in the nearby horizontal field of the antenna using this much power and antenna gain. Joe On 4/25/2010 3:13 PM, George wrote: what do you mean...a cell site in the city radiates much more times than my antenna, its on the same level and shoots directly in peoples houses... Yahoo! Groups Links
[Repeater-Builder] QCII Tone Intervals
Hi Folks, I thought I remembered the timing, but I've slept since then. In A-B signaling, the A tone was 1 second, the B tone was 3 seconds, but what was the A/B interval? (most around here use a 2 second B tone). What is the dead time between the tones? (if any) Thanks, Tim
Re: [Repeater-Builder] QCII Tone Intervals
No interdigit time, at least in most systems. Chuck WB2EDV - Original Message - From: tahrens301 tahr...@swtexas.net To: Repeater-Builder@yahoogroups.com Sent: Sunday, April 25, 2010 4:57 PM Subject: [Repeater-Builder] QCII Tone Intervals Hi Folks, I thought I remembered the timing, but I've slept since then. In A-B signaling, the A tone was 1 second, the B tone was 3 seconds, but what was the A/B interval? (most around here use a 2 second B tone). What is the dead time between the tones? (if any) Thanks, Tim Yahoo! Groups Links No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.814 / Virus Database: 271.1.1/2834 - Release Date: 04/25/10 02:31:00
[Repeater-Builder] Re: Helper Sinadder Linear 5 manual ?
Update - manual found. Thanks to the kindness of fellow group member Bruce.H. I now have a copy of the Linear 5 manual. 73's to all Fraser
Re: [Repeater-Builder] QCII Tone Intervals
In case you don't have this: http://www.midians.com/pdf/tone_signaling.pdf Chuck WB2EDV - Original Message - From: Tim Ahrens To: Repeater-Builder@yahoogroups.com Sent: Sunday, April 25, 2010 5:47 PM Subject: Re: [Repeater-Builder] QCII Tone Intervals thanks Chuck, that's what I thought, but wanted to be sure. Tim Chuck Kelsey wrote: No interdigit time, at least in most systems. Chuck WB2EDV - Original Message - From: tahrens301 tahr...@swtexas.net To: Repeater-Builder@yahoogroups.com Sent: Sunday, April 25, 2010 4:57 PM Subject: [Repeater-Builder] QCII Tone Intervals Hi Folks, I thought I remembered the timing, but I've slept since then. In A-B signaling, the A tone was 1 second, the B tone was 3 seconds, but what was the A/B interval? (most around here use a 2 second B tone). What is the dead time between the tones? (if any) Thanks, Tim Yahoo! Groups Links -- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.814 / Virus Database: 271.1.1/2834 - Release Date: 04/25/10 02:31:00 -- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.814 / Virus Database: 271.1.1/2834 - Release Date: 04/25/10 02:31:00
[Repeater-Builder] Re: how far
i am using BIRD watt meater with 1000 watt slug and i am not misdirectioning anybody --- In Repeater-Builder@yahoogroups.com, Gary Schafer gascha...@... wrote: It sounds like you have a linear amplifier. Linear amplifiers are used when multiple low power transmitters are to be amplified by one amplifier. The peak power (actually peak envelope power) capability of the amplifier must be quite high in order to handle the multiple signals without generating intermodultion distortion. The peak envelope power increases by the square of the number of signals going into the amp. N^2 * power Example: two 5 watt signals into the amplifier have a peak envelope power of 20 watts. Three have a PEP of 45 watts. Ten 5 watt signals works out to a PEP of 500 watts. (10^2 = 100*5 watts = 500 watts pep) So if you have ten 5 watt transmitters fed into the amplifier the amplifier must be capable of 500 watts PEP. 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of George Sent: Sunday, April 25, 2010 4:08 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: how far well this amplifier is rated 90 watts you can see it on e-bay just type powerwave in the search. it has error eliminating computer inside and no distortion what so ever. i have it modified and use it at 450 watts and i pushed it with two power supplys that can put more than 120 ampers at 24 volts. the antenna is rated at 500 watts... i wonder why woud they do that...just to put out 5 watts? --- In Repeater-Builder@yahoogroups.com, Joe k1ike_mail@ wrote: The typical cell site is probably running a 10 watt amplifier with an ERP of about 100 watts. City sites probably a lot less power. Your in the high power paging transmitter class. Physical damage can be done in the nearby horizontal field of the antenna using this much power and antenna gain. Joe On 4/25/2010 3:13 PM, George wrote: what do you mean...a cell site in the city radiates much more times than my antenna, its on the same level and shoots directly in peoples houses... Yahoo! Groups Links
RE: [Repeater-Builder] Helper Sinadder Linear 5 manual ?
Fraser, The manual for the Helper SL-105 is here: www.repeater-builder.com/helper/helper-ind-sinadder-1.pdf 73, Eric Lemmon WB6FLY -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of frasercastle Sent: Sunday, April 25, 2010 11:13 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Helper Sinadder Linear 5 manual ? Hi all, I am new to this excellent group and noticed that some members use Helper Sinadders. I have an early Helper SL-101 and recently purchased the Helper Sinnadder 'Linear 5' (SL-105?) model. Having searched the internet I have managed to find a manual for the SL-103 on the repeater builder website but no sign of a manual for the Linear 5. Does anyone know the differences (if any) between an SL-103 and the Linear 5 (SL-105?). Directions to a source of the Linear 5 or similar CML-1 manual would also be greatly appreciated. I also own the Helper RF Millivoltmeter RF801 and Matchbox MB800 if anyone needs scans of the manuals for these. Kind regards to all Fraser
RE: [Repeater-Builder] Re: how far
I am not saying that you are misleading anyone. I am just pointing out to all that the amplifier, if intended for multiple low power transmitter amplification, is indeed capable of rather high power output. 500 watts PEP output with multiple transmitters fed to it is certainly capable of 500 watts carrier output with a single transmitter. 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of George Sent: Sunday, April 25, 2010 7:19 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: how far i am using BIRD watt meater with 1000 watt slug and i am not misdirectioning anybody --- In Repeater-Builder@yahoogroups.com, Gary Schafer gascha...@... wrote: It sounds like you have a linear amplifier. Linear amplifiers are used when multiple low power transmitters are to be amplified by one amplifier. The peak power (actually peak envelope power) capability of the amplifier must be quite high in order to handle the multiple signals without generating intermodultion distortion. The peak envelope power increases by the square of the number of signals going into the amp. N^2 * power Example: two 5 watt signals into the amplifier have a peak envelope power of 20 watts. Three have a PEP of 45 watts. Ten 5 watt signals works out to a PEP of 500 watts. (10^2 = 100*5 watts = 500 watts pep) So if you have ten 5 watt transmitters fed into the amplifier the amplifier must be capable of 500 watts PEP. 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of George Sent: Sunday, April 25, 2010 4:08 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: how far well this amplifier is rated 90 watts you can see it on e-bay just type powerwave in the search. it has error eliminating computer inside and no distortion what so ever. i have it modified and use it at 450 watts and i pushed it with two power supplys that can put more than 120 ampers at 24 volts. the antenna is rated at 500 watts... i wonder why woud they do that...just to put out 5 watts? --- In Repeater-Builder@yahoogroups.com, Joe k1ike_mail@ wrote: The typical cell site is probably running a 10 watt amplifier with an ERP of about 100 watts. City sites probably a lot less power. Your in the high power paging transmitter class. Physical damage can be done in the nearby horizontal field of the antenna using this much power and antenna gain. Joe On 4/25/2010 3:13 PM, George wrote: what do you mean...a cell site in the city radiates much more times than my antenna, its on the same level and shoots directly in peoples houses... Yahoo! Groups Links Yahoo! Groups Links
[Repeater-Builder] Re: how far
thank you for the understanding! no offence of any kind here takeing or giving! transistors are bipolar and made by mother motorola 8o watts capable each 8X80=640 watts pure power PEP ofcource the lifespan will be short if the supply is 27 volts and the consimption is 80-90 ampers that is impossible to me...so the driving input is 130-140 watts the supply is 24 volts and the consumption is less than 60 ampers...purring like a kitten. the result is satisfying and the duplexer is happy with the power inputed to it. --- In Repeater-Builder@yahoogroups.com, Gary Schafer gascha...@... wrote: I am not saying that you are misleading anyone. I am just pointing out to all that the amplifier, if intended for multiple low power transmitter amplification, is indeed capable of rather high power output. 500 watts PEP output with multiple transmitters fed to it is certainly capable of 500 watts carrier output with a single transmitter. 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of George Sent: Sunday, April 25, 2010 7:19 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: how far i am using BIRD watt meater with 1000 watt slug and i am not misdirectioning anybody --- In Repeater-Builder@yahoogroups.com, Gary Schafer gaschafer@ wrote: It sounds like you have a linear amplifier. Linear amplifiers are used when multiple low power transmitters are to be amplified by one amplifier. The peak power (actually peak envelope power) capability of the amplifier must be quite high in order to handle the multiple signals without generating intermodultion distortion. The peak envelope power increases by the square of the number of signals going into the amp. N^2 * power Example: two 5 watt signals into the amplifier have a peak envelope power of 20 watts. Three have a PEP of 45 watts. Ten 5 watt signals works out to a PEP of 500 watts. (10^2 = 100*5 watts = 500 watts pep) So if you have ten 5 watt transmitters fed into the amplifier the amplifier must be capable of 500 watts PEP. 73 Gary K4FMX -Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- buil...@yahoogroups.com] On Behalf Of George Sent: Sunday, April 25, 2010 4:08 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: how far well this amplifier is rated 90 watts you can see it on e-bay just type powerwave in the search. it has error eliminating computer inside and no distortion what so ever. i have it modified and use it at 450 watts and i pushed it with two power supplys that can put more than 120 ampers at 24 volts. the antenna is rated at 500 watts... i wonder why woud they do that...just to put out 5 watts? --- In Repeater-Builder@yahoogroups.com, Joe k1ike_mail@ wrote: The typical cell site is probably running a 10 watt amplifier with an ERP of about 100 watts. City sites probably a lot less power. Your in the high power paging transmitter class. Physical damage can be done in the nearby horizontal field of the antenna using this much power and antenna gain. Joe On 4/25/2010 3:13 PM, George wrote: what do you mean...a cell site in the city radiates much more times than my antenna, its on the same level and shoots directly in peoples houses... Yahoo! Groups Links Yahoo! Groups Links
[Repeater-Builder] Interference from local 600 kHz radio station.
Hi We have a local AM radio station on 600 kHz. Their transmitter site is about 10 miles from the center of the city. From what I've found on the web, they run 25,000 watts during the day and 8,000 watts at night. On at least one of our repeaters we're finding that this is mixing with the output of repeater to create a phantom signal exactly on the input. We're not sure whether the mixing is happening inside the repeater or in something in the environment near the repeater. We've confirmed this is the source of the problem on one repeter and supect it on another. Has anyone had experince with a loacl AM station on 600 kHz? We're looking for way to combat the interference. Thanks Bruce - VE5BNC
Re: [Repeater-Builder] Interference from local 600 kHz radio station.
Change the split of the repeater to anything other than 600 kHz. On Sun, Apr 25, 2010 at 8:06 PM, lpcoates bruce.coa...@sasktel.net wrote: Hi We have a local AM radio station on 600 kHz. Their transmitter site is about 10 miles from the center of the city. From what I've found on the web, they run 25,000 watts during the day and 8,000 watts at night. On at least one of our repeaters we're finding that this is mixing with the output of repeater to create a phantom signal exactly on the input. We're not sure whether the mixing is happening inside the repeater or in something in the environment near the repeater. We've confirmed this is the source of the problem on one repeter and supect it on another. Has anyone had experince with a loacl AM station on 600 kHz? We're looking for way to combat the interference. Thanks Bruce - VE5BNC Yahoo! Groups Links
[Repeater-Builder] Low band amplifier
Hi John, Did you guys ever figure out what you wanted to do with that lowband micor PA? thanks, Tim W5FN Utopia, TX
