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

Ah not heard of that on forums before.
Sorry

I came across this thread while trying to sort a jumbo I had.

Mine lost tx and rx when the tune and clarifier was turned left.

It turned out someone had changed the 5.4 volt to a 6.8 giving too high a voltage on the pll and oscillator circuit.

Changed that and it's sorted

Dave

Has anyone got a schematic for a colt excalibur. Its the 121 chassis I need the digram for the silver one that has 3 x 40 ch and the Clarifier that pulls out for tx/rx etc. Some goon has pulled the wires and resistors off the switch and while i could probably work it out the schematic will save me s...

In fact i have just had one in for a uk eprom and it is indeed a 3900 in a posh coat.

Hi Rick I too am very impressed by your knowledge especially of the obscure (to me at least) old am radios. I agree though on people not having the courtesy to say thank you. I have a few emails a day from people on ebay asking whats wrong with their radio. If i can help out i do but its not very of...

Dragging an old topic from the dead lol
I always change R150 which is in line with the AF ALC.
In the 121 board i stick a 5.6k and the 125/natos around 3k and that helps the fm tx audio

The channel jumping thing may be one of the small tactile switches gone duff.
I had a Saturn Turbo that did the same thing and changing the switch cured it.

Isnt it a Superstar 3900 with a counter stuck on the front?

I have only just realised that there was a forum attached to the Radio Mods site

I have been having a read and there are some great posts on here.
I hope i can help out in some small way as well as furthering my own knowledge!

Dave

www.cubwolf.co.uk