The Defpom Forum, for RadioMods, S&M Software and Music by The Defpom

Will the 2879 replace the 2290 without any other componant change? I tried the switch because I had spare parts and the 2290 was toast but the output is not any better...mayby less with the 2879? I am driving it with a Cobra 29 with the mosfet upgrade (IRF520) DK is 2 watts..PEP is 30w from radio. T...

Check voltage on the AN612 IC5 I think. I have seen several with 12 volts on pin 7. Should be about 7 or 8 volts. This lets AM work OK but SSB sounds terrible.
If this is the case change the MB3756 switching regulator.

Flash

Radio Make and Model: Cobra 148 (old style) PCB Number: PLL Number: MB8719 Test gear available: pretty much everything Symptoms: final gets very hot when radio is turned on and not TXing (mic not keyed) What is working: What has been tried: The radio had low TX power about 1 watt and very little for...

Sorry guys, That last post did not make much sence did it. I said you could buy direct from Ranger then (in the same breath) said they use a shop in Arizona. I use to be a authorized Ranger dealer and bought everything direct. Now they use distributors and we have to go through them. The shop I ment...

Hi Rick, Thanks for the reply! I have seen many of the galaxy radios with the 23-24 mhz problem that resoldering or replaceing the 10.240 cured. I did not consider :idea: resoldering the 10.240 in this radio since pushing the band button would always make it jump to 27mhz. and once it locks up it st...

Thanks for the reply guys. I will check the areas you mention and let ya know the results.
Thanks again...
Flash

I have a SS-158 EDX nearly 1 year old. When I turn on the radio it shows 23xxx mhz on freq. counter. No TX/RX? I have to push the High/Low band button in/out one time and it will jump to the 27 mhz band. Once on 27mhz it stays there. I realigned the PLL ...did not seem to help? Not sure if it is a s...

Hi, not sure about the mosfets but the 10khz switch moves you up one channel or 10khz. It is used to give you the RC channels that are between channels 3-4, 7-8, 11-12, 15-16, 19-20.

Good luck with the mosfets!

Flash

Hi Rick, Thanks very much for the reply.
This radio is only 2 months old. I did not know there is two mosfet versions? I thought only the 1969 and then the mosfet versions existed
I will check all the above..Thanks again.

Flash

Hi all, I have a S9 that was working great (45-50 watts with a 10 watt key) The radio is the newer unit with mosfets. I hooked it up to a brand new 25 amp power supply. I was talking on it when out of the blue the power supply took a dump...(went to 30 volts output) The radio is still working OK but...