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Cobra radio with upd 858pll

Techno1

Active Member
Feb 21, 2022
139
39
38
48
New Hampshire
I installed a channel kit in my cobra 29gtl.

The Am radios with the 858 dont broadband too well for power.

I installed a kit with regular 40 and 40 below channel 1 so from 27.405 down to 26.515.

The radio is quite hard to get decent power from top to bottom.

I have a channel kit in my Cobra 29GTL and had both up and down channels and the GTL and LTD tune great for power.

So has anyone broadbanded the power and VCO to get decent power.

I know the upd858pll ssb radios tune well as 1 can can be modded to broadband to tune for good power when adding channels.

I know these XLRs are older radios but just having fun. The kit is an Expo 100 I kit I added.

thanks
 

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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.