A slight word of caution: there were 3 versions of the Challengers: one that used a DOS PC to program, one that used a Commodore 64 to program, and one that used...I think either a TRS-80 or a Timex-Sinclair to program. If you have one of the last 2, there were special modules for interfacing to the radio-good luck finding one! Most likely you'd have to change out the logic board for a PC-based board. There weren't a LOT of them, they were only made early on, but they are out there (a former employer had quite a few C-64 style, because he was a Commodore fan.)
On 3/16/2010 10:32 PM, Doug wrote: > At 06:03 PM 16/03/2010, you wrote: >> EF Johnson Challenger 7152A? >> >> VHF 55W >> >> http://www.repeater-builder.com/johnson/efj-index.html >> >> http://www.ccdx.org/zedyx/mods/challenger.htm >> >> On Tue, Mar 16, 2010 at 3:43 PM, Doug<ap...@sasktel.net> wrote: >>> I have a vhf radio presently on 162mhz made by E.F Johnson. >>> It is a small unit, but I can't find a combo. It has a >>> FCC ID ATH90F2427152. The number is very faded and hard >>> to read. >>> >>> Can anyone tell me anything about these. Are the useful >>> for hams and how can they be programmed. > --------------- > I think you are right on.. I googled 7152 and found a chap who > was doing the uhf version. The radios look exactly the same. So > I guess most of the pin outs and mic connections will be also. > Now I have to find a schematic and a little info on how do you > program them... > > Thanks very much.. > > 73 Doug
