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Cobra 148 GTL D (China, newer 148) Alignment/Service/Mods

443

W9WDX Amateur Radio Club Member
Sep 25, 2010
258
112
53
Texas
Hello everyone, been a while since I been here (2013). Been hamming it up, mostly playing with SDR gear and old Shortwave rigs, not much TX time....

Anyway, a friend brought a 148 GTL D to me that he had jacked up the VCO voltage somehow when trying to do an alignment (I guess going off of the old side-mic 148 alignment instructions), the radio would only work on channels 26-40, a little tweak of the can by ear got it going again on all 40 channels. Anyhow, I was digging around looking for info on alignment, mods, etc for this rig and couldn't find anything specifically for it. Suggestions? Also wondering if in the new versions of this rig (as of late, like 2012-2015) if they had ever fixed the drifty and warbly SSB problems? I remember years ago playing around with one, instead of the old MB3756 (I think) voltage regulator the new rigs have the 3 pin 7808 regs or whatever in them. Any good source of info/mods/alignment?

Thanks!

443
 

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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.