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Help with a philly pc76xl

2FB327

Active Member
Oct 31, 2012
270
55
38
I was given this radio and have no history. It looks to be a virgin, limiter intact, wax on cans, no spread coils.
On RX, when hooked to the generator and set on channel 19, the tone is audible on 18 and weak on 17.
On TX, it has carrier and mod from channel 1 thru 17 then nothing.
What would be the next step? Chip? Is there a way I could check the chip with the frequency counter?
 

That's what's frustrating, I checked the alignment according to the manual and have the pattern on the scope on channel 19 and it changes with L22 and it's there on channel 1 and 40.
With the voltmeter on R88 I have the 3.2V and it changes with L19.
 
Guess I would test parts in/around the PLL next.
Do you have another xtal to put in and try - or tested the original - for starters?
 
Last edited:

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  • @ heartbreaker3473:
    Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
  • @ AudioShockwav:
    Wes, it's better if you start a thread on the main forum, more people are going to see your question.
  • @ heartbreaker3473:
    Okay, sorry, will put in a forum
  • @ heartbreaker3473:
    I put it in the general disscution help area and started a new thread. Thank you for letting me know.