GE Master II Mobile repeater - Elmers Forum at eHam.net

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GE Master II Mobile repeater	Reply
by KI4DRA on February 27, 2004	Mail this to a friend!
I'm thinking about purchasing a GE Master II mobile repeater, and use it with a power supply for a base station repeater. Will this type of set up work worth a hoot? I want to put up a repeater, but like most hams, do it on a budget. Any recomendations? Thanks in advance, Dave KI4DRA

RE: GE Master II Mobile repeater	Reply
by WB2WIK on February 27, 2004	Mail this to a friend!
What the heck's a "mobile repeater?" I think you mean a mobile duplex transceiver, set up for use as a duplex radiotelephone. Those are very common. Most require modification and improvement to serve as a real repeater; the mobile duplexers don't have a lot of isolation and may not work with more than a few Watts of transmitter power using amateur band repeater splits. Also, the transmitters weren't designed for 100% duty cycle 24/7 service, since these were really intended for use as radiotelephones, where the average call is probably only a few minutes. Still, could be a reasonable starting point for a project -- and these rigs are available very inexpensively. In fact, I see them given away for free every month at the local ham Swap Meet! If you like to homebrew and experiment, such a rig could be a great foundation for a repeater. At least they should have the frequency stability, spectral purity and low distortion required of a repeater. WB2WIK/6

RE: GE Master II Mobile repeater	Reply
by N6AJR on February 27, 2004	Mail this to a friend!
do you know about the things on a repeater , like frequency coordination, and such on a repeater..?

RE: GE Master II Mobile repeater	Reply
by K5LXP on February 27, 2004	Mail this to a friend!
Would be useful to know if it was an in-band or or cross-band. I can't recall if GE ever made vehicular repeaters out of Mastr II's, not sure what you'd do with one in the ham bads (not frequency agile). If it's homebrew, you need to find out a bit more about it before we can help you. Mark K5LXP Albuquerque, NM

RE: GE Master II Mobile repeater	Reply
by KI4DRA on February 27, 2004	Mail this to a friend!
Thanks for the help. I know nothing about repeaters except on how to talk a lot on one. lol I live on a ridge, called ridgetop, with an elevation of about 400ft above Nashville. So, it seemed logical to put up a repeater for my own use. But it looks like this particular unit may not be for me. Why are repeaters so bulky? Why hasn't someone come up with repeater software to replace all the hardware?

RE: GE Master II Mobile repeater	Reply
by AC5E on February 27, 2004	Mail this to a friend!
Dave, the FIRST step in putting up any repeater is to contact your local repeater coordinator, who if memory serves is KB4POA in Clarkesville, and find out what if any repeater pairs are available. Putting up an uncoordinated repeater is almost certain to QRM a coordinated repeater, resulting in nasty letters from the FCC and other interested parties. You do NOT want to go there. If and when you get a coordinated frequency you can go duplexer and repeater shopping. The local club has had very good luck with converted GE's from Micro Computer Concepts in Florida; and I am sure there are other sources for converted repeaters as well. 73 Pete Allen AC5E

RE: GE Master II Mobile repeater	Reply
by OBSERVER11 on February 27, 2004	Mail this to a friend!
Dave, The MASTRII makes a GREAT repeater, if it is already in full duplex configuration, all you will need is a pair (ie, a pair of frequencies). Contact SERA South Eastern Repeater Assoc. get a pair of frequencies to use. Order crystals, tune it up and play radio. I would highy suggest an Astron 35A supply, follow the mods found on the "repeater-builders" yahoo group and float a series 24 size gel-cell battery to keep the repeater working during power failures. If the MASTRII has a simple controller, you will want to replace that, MCC makes a nice controller, but the NHRC makes a PLUG IN controller!! SWEET as they say! Cheaper then the MCC, and it is plug-n-play. Since you know nothing about repeaters, I would suggest you read, read, read! ARRL Handbook, WA6ITF had an interesting book many years ago, it was published by TAB books, so it had a bunch of errors, but it also had a ton of info - especially if you were into 220MHz. Go to the NHRC site too.

RE: GE Master II Mobile repeater	Reply
by KI4DRA on February 27, 2004	Mail this to a friend!
Found the site for Micro computer concepts. http://home.earthlink.net/~mccrpt/ Looks like a good place to start. also thanks for the tip for co-ordinating repeaters before just jumping in!

RE: GE Master II Mobile repeater	Reply
by W4TYU on February 27, 2004	Mail this to a friend!
I did a quick check in an recent issue of SERA's Repeater Journal and found 20 2 meter, 8 220 and 18 440 repeaters listed as Nashville to say nothing of those in nearby locations. Read the information found at http://www.sera.net. It is professionally done. Ole man JEAN

RE: GE Master II Mobile repeater	Reply
by KI4DRA on February 27, 2004	Mail this to a friend!
W4TYU, I knew that there were a lot of 2 meter repeaters in my area, but I didn't know that many existed. lol I have about 12 programmed, and thought I had all of them....... I think some of them are tied together, so I didn't put some in memory. Can you operate a repeater without a duplexer? What if I want to use two antennas instead? One for RX and the other for TX. Would this be a posible combination? So far it looks like I can get a nice unit for 500 bucks, but without the duplex. I wouldn't mind putting up two antennas on opposite ends of the house if it meant not having to deal with duplex. Any comments? Am I just throwing out wishful thinking? Dave KI4DRA

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