I needs the mike PIN out for a MAXAR 80 Mobile Any Help ??? Thanks Paul [EMAIL PROTECTED]
----- Original Message ----- From: ka3hsw To: [email protected] Sent: 8/25/2008 2:32:42 PM Subject: [Repeater-Builder] Re: maxar 80 uhf --- In [email protected], "Ian Miller" <[EMAIL PROTECTED]> wrote: > > Fellows > > I have a MAxar 80 mobile MD34tsa1800A sitting on the shelf here. > > Its a 25 watter according to the side plate. > > I'd like to make use of the PA section on our Hamtronics unit to > experiment, to see if extra RF out will cause any desense. It looks > pretty beefy on the heatsink for a trial run. > > Here is my problem. Aside from the small RF in and out cables, there > are 5 leads that go to the main board. I will assume they are for B+ > and some sort of TX switching. I dont need any TX switching as the > amp will be in the TX line of the repeater. > > Has anyone got a wiring diagram for the MAXAR handy? > > I've looked on some manuals sites with no luck. > > Thanks > > Ian > VA2IR > I have a Maxar 80 carcass at home that I'll take a look at tonight (not sure if it's VHF or UHF), but I can tell you that the coax furthest from the antenna connector is the input, and the coax closer to it is the RX feed (you can cut this one off). One wire, typically red with a white stripe, is the switched A+, another (yellow/brown, perhaps?) is regulated PA A+. Another (white/red?) is PTT (used to ground a PIN diode & shut off the RX feed: you'll want to ground this full-time). The others are possibly for thermal shutdown control. If you can get your hands on a Maxar or Moxy manual, the PA's are very similar... George, KA3HSW / WQGJ413
