Shakespeare fortress

[rogodee]

I got one in a small lot of equipment. I know nothing about the radio, but my question concerns the pll unlock led. Is it supposed to be on all the time? It receives but has no tx. Yes I know about the caps being old, so thats a nonstarter..

 

[AudioShockwav]

I got one in a small lot of equipment. I know nothing about the radio, but my question concerns the pll unlock led. Is it supposed to be on all the time? It receives but has no tx. Yes I know about the caps being old, so thats a nonstarter..

If the Pll unlock lite is lit, it literally means that the PLL is unlocked.
When FCC changed the rules they tightened up the requirements and if you try to force the PLL to do something naughty it will unlock and kill the TX.
If it's unlocking with no alterations there is a fault.
The first thing that comes to mind is old dried out caps (I know you don't want to hear that but it is what it is) and I would recommend starting with recapping the radio .......

This is the most prevelvent cause of faults in a 45+ year old radio.

73
Jeff