[Repeater-Builder] TS-32 Tone Board
Anyone have a working one they want to part with?
[Repeater-Builder] Mastr III
I recently purchased a Mastr III repeater and the person i bought it from said he would include the software. Well, after over a month I finally got the software and it's for a Mastr IIe (from what I have read they both use the same or similar software) it reads the machine OK but I cannot find where to to change the freq, I can only change the PL tone. Do I have the wrong software, or am I missing something? I really want to use this thing for my clubs main repeater, but I am rather exasperated at this point. Please help. KE7DZZ SNARS Tech Chair [EMAIL PROTECTED]
[Repeater-Builder] Re:Digipeater deviation
What is the allowable deviation for a two meter digipeater in amateur service? Is 15 kHz excessive? If this is on a standard 1200b User LAN keep the deviation below 3.5 KHz - anything down to 3.0Khz should keep most user devices happy. If this a 9.6kb digi keep that deviation under 3.0 KHz - 2.75Khz to 3.0KHz. Follow the leads provided by Laryn K8TVZ and Jeff. bud N0IA
Re: [Repeater-Builder] Mastr III
try launching the program Mastr.exe /M3 and see if that does the trick. Steve NU5D Tina wrote: I recently purchased a Mastr III repeater and the person i bought it from said he would include the software. Well, after over a month I finally got the software and it's for a Mastr IIe (from what I have read they both use the same or similar software) it reads the machine OK but I cannot find where to to change the freq, I can only change the PL tone. Do I have the wrong software, or am I missing something? I really want to use this thing for my clubs main repeater, but I am rather exasperated at this point. Please help. KE7DZZ SNARS Tech Chair [EMAIL PROTECTED] Yahoo! Groups Links -- Ham Radio Spoken Here !!! NU5D EM11 http://www.qrz.com/callsign/NU5D Nickel Under 5 Dollars
[Repeater-Builder] Zetron 45B
I've had a Zetron 45B kickin' around for a few years, and now I'd like to use it ... Problem is, like many others who live too far away from parts sources, I have a tendancy to borrow parts from one gadget to build another. At one time or another, I borrowed U2 and U30 for a controller project. I believe U2 was a 6840, and U30 was either a 567 or 555. And of course I don't have the original schematics, so I can't be sure what I need to get the unit up and running again. If you have a 45B manual, could you kindly look up U2 and U30, and let me know what part numbers I need. Thanks.
[Repeater-Builder] ZETRON POP 1 ?
I THINK this is a repeater phone patch, don't find it on the sites Zetron Link, any ideas??? KF8ZN
[Repeater-Builder] illegal_engineering
http://www.timhunkin.com/94_illegal_engineering.htm
[Repeater-Builder] illegal_engineering
http://www.timhunkin.com/94_illegal_engineering.htm Some of my over the pond friends sent the above out. If you have a bit of time to read some non related text. s.
[Repeater-Builder] Re: 3 Channel UHF Ferrite Combiner
The only way to do the close spaced frequencies 447.750 and 447.850 is with a hybrid type combiner. One is not restricted to using a hybrid... it's just a question of how practical and cost effective going another route would be. Real world loss using a hybrid is over 4dB per leg... of which I'm not a fan about space heating a radio vault with terminated rf power. The most practical choices are to be made when we hear if he wants to use one or more antennas and any receiver requirements. cheers, s.
RE: [Repeater-Builder] Re: 3 Channel UHF Ferrite Combiner
Real world loss using a hybrid is over 4dB per leg... of which I'm not a fan about space heating a radio vault with terminated rf power. The quadrature hybrid itself should only be 3 dB theoretically, typically around 3.2 dB in the real world. It's the external circulators that need to be added to get the necessary isolation that bumps it up to around 4 dB. You can do productive things with the hybrid's reject port power; it doesn't have to be connected to a dummy load. You can put an isolator on it (to guarantee a good match to keep the hybrid's isolation up), and feed the output to another antenna, such as a corner reflector on the back-side of the tower to fill in the nulls of your side-mounted omni. Waste not, want not like my grandmother used to say. But make sure the IM products are suitably attenuated; ferrites are non-linear devices so they will create IM when passing two high-level signals. Or, you can connect the reject port to a dump load to make a nice warm place for mice to build a nest :-) --- Jeff
RE: [Repeater-Builder] Re: 3 Channel UHF Ferrite Combiner
Now that's a neat idea... I'll file that in my head and claim local credit for it when no one here is paying close attention. Unless someone is really trying or just gets really lucky... it's my opinion the nulls from a side mounted omni shouldn't be that deep if it's properly offset from the tower/pole. Here in the lowlands where we don't have high mountains to put our repeaters on, we have big tall towers with 12' faces that are packed with TV and FM transmission lines that block RF from passing through the tower. Nulls off the backside over a fairly wide arc that are 30 dB deep or more are an unfortunate fact of life... --- Jeff
[Repeater-Builder] Re: 3 Channel UHF Ferrite Combiner
The quadrature hybrid itself should only be 3 dB theoretically, typically around 3.2 dB in the real world. It's the external circulators that need to be added to get the necessary isolation that bumps it up to around 4 dB. Yep, the overall package has much resultant baggage. You can do productive things with the hybrid's reject port power; it doesn't have to be connected to a dummy load. You can put an isolator on it (to guarantee a good match to keep the hybrid's isolation up), and feed the output to another antenna, such as a corner reflector on the back-side of the tower to fill in the nulls of your side-mounted omni. Waste not, want Now that's a neat idea... I'll file that in my head and claim local credit for it when no one here is paying close attention. Unless someone is really trying or just gets really lucky... it's my opinion the nulls from a side mounted omni shouldn't be that deep if it's properly offset from the tower/pole. Yeah... there would be viable applications where the main tx uses a corner reflector or similar directive antenna system and the otherwise wasted hybrid port power could be used to feed something directional the other direction. not like my grandmother used to say. But make sure the IM products are suitably attenuated; ferrites are non-linear devices so they will create IM when passing two high-level signals. Quality bandpass cavities with sometimes optional harmonic filters are the bacon saving hardware. Or, you can connect the reject port to a dump load to make a nice warm place for mice to build a nest :-) --- Jeff That's what the old user installed Tripp Lite Power Supply is for. How much crap can a mouse stuff into it before it fails. cheers Jeff, skipp
Re: [Repeater-Builder] Re: 3 Channel UHF Ferrite Combiner
Jeff DePolo wrote: You can do productive things with the hybrid's reject port power; it doesn't Good lord, I never even thought of that. Another one for the file until you have a chance to try it out somewhere file. LOL! Nate WY0X
RE: [Repeater-Builder] Re: 3 Channel UHF Ferrite Combiner
-Original Message- From: Repeater-Builder@yahoogroups.com [mailto:Repeater- [EMAIL PROTECTED] On Behalf Of skipp025 Sent: Monday, September 17, 2007 10:57 AM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: 3 Channel UHF Ferrite Combiner The only way to do the close spaced frequencies 447.750 and 447.850 is with a hybrid type combiner. One is not restricted to using a hybrid... it's just a question of how practical and cost effective going another route would be. Real world loss using a hybrid is over 4dB per leg... of which I'm not a fan about space heating a radio vault with terminated rf power. The most practical choices are to be made when we hear if he wants to use one or more antennas and any receiver requirements. cheers, s. He said that he has only one antenna available in his post. No other way to do it that I know. 73 Gary K4FMX
[Repeater-Builder] Any micor fans in the Los Angeles area?
I have a dozen mobile Micors, Mitreks and Motracs, plus three tabletop base stations available for haul away. The stack includes a 12f 75w wide-spaced UHF with 12 PL tone encode, a 6m 71LHT 4f PL with Extender, and a lot more jewels. My house is in escrow, and I have to be out of it in 6 days. An e-waste hauler is arriving at 1pm Wednesday. Location is Arcadia, just east of Pasadena. Email me and we can coordinate a time for you to pick up.
[Repeater-Builder] Re: 3 Channel UHF Ferrite Combiner
The T-Pass UHF transmitter multicoupler [e.g. 73-67-25-2C-03] from TX- RX systems uses cavity-ferrite technology and can combine two transmitters at a separation of only 75 KHz. The loss ... is comparable to that of a hybrid combiner, but T-Pass provides the benefit of cavity selectivity for noise and intermodulation supression. -- --- In Repeater-Builder@yahoogroups.com, Gary Schafer [EMAIL PROTECTED] wrote: The only way to do the close spaced frequencies 447.750 and 447.850 is with a hybrid type combiner. ... . . [mailto:[EMAIL PROTECTED] On Behalf Of Mike Mullarkey ...We need to combine TX 447.750, 447,850 and 464.900 into one antenna. ...'
[Repeater-Builder] Tone Board Wanted
Looking for a ComSpec Encoder/Decoder 32 tone.
[Repeater-Builder] Transistor M9633.
In the psu in a Motorola MC compact repeater the driver transistor (M9633) is blown. Is there any simular to this from other manufactors? 73 de LA9JDA paul
