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Search results

  1. guitar_199

    Cobra 29ltd no transmit 35-40

    I would be curious to know (as a quick check) whether the PLL is locked or unlocked on those channels with no TX. I would think it would kill receive as well if it WERE unlocked but I am not sure that you explicitly said whether RCV was working or not...... only that it did not have TX...
  2. guitar_199

    Dmans, I just ran into an old thread back in 2018 where you mentioned looking for SAMS CB-207...

    Dmans, I just ran into an old thread back in 2018 where you mentioned looking for SAMS CB-207 because you needed the info on the Sears Roadtalker in that volume. Did you ever GET the SAMS info on that radio....... or have you sold/given up on it since then? I have it in PDF and can arrange to...
  3. guitar_199

    Sams PhotoFacts Collection

    Oh indeed! If you talk to him again let him know I wish him well in "getting out of there"!!!!!!!!
  4. guitar_199

    Did I miss a memo or something??? (GE 3-5811B related)

    I promise I will double check it.... but it will take a day or two!!!!!!!! I am "promised to the Missus" for some tasks here at home..... and THIS is how i stay married for 52 years!!!!!!!!!! :) I promise I'll check!!!
  5. guitar_199

    Did I miss a memo or something??? (GE 3-5811B related)

    Don;'t know the board number and the SAMS doesn't show it.... I'll have to crack it back open and take a look...... Well... for one... there is not a single mic audio amplification stage before the audio chip. Literally.... passive components.... no gain....... anywhere in the path on the...
  6. guitar_199

    Did I miss a memo or something??? (GE 3-5811B related)

    The actual "first" problem I found is covered in the MicCircuit image below. RCV was great to the ears to begin with. XMT carrier was great on the scope and spectrum analyzer. But modulation was "non existent". Seriously.... I would say no more than 5%. R58 (33K) and R59(5.6K) were swapped...
  7. guitar_199

    Did I miss a memo or something??? (GE 3-5811B related)

    Okay... I only woke this one up to let you all know the final answer. The final act occurred today (Sat, April 4). The original complaint of low modulation was really indeed the two factory resistors that were swapped in their locations. And yes... it cam from the factory that way. The...
  8. guitar_199

    Took care of something today.... (test equipment!)

    I have had this thing for years!!!!!!! One of my son's friend's father..... used to repair CB radios professionally out of a truck. Did so up until literally they found him in the truck .... gone of a heart attack. He had been working on radios in his yard and his wife and son were gone. I...
  9. guitar_199

    Cobra 29ltd/gtl and radios that use the same board ?

    SAMS on a 29GTL says TP5 for a similar location. This is AM only so there are only two alignment steps on this one... but yes. TP5 on the GTL. It appears to be TP6 on the 29XLR. I don't have a SAMS on the 29LTD so I can't be sure about it.
  10. guitar_199

    Sams Infor on the SBE Console V

    If I can find a way to get it to you... I have about a 380-ish Mb ZIP file of everything I have on the Console V (and Sidebander 5 too). Factory service manual, operator's manual, a number of schematic images..... I tried to upload it here but it blew out .... saying the file was too big. If...
  11. guitar_199

    Cobra 89gtl service alignment

    I happened to have this one on hand. I put it up under your posting to Dan!!!
  12. guitar_199

    Sams PhotoFacts Collection

    Dan, I can't help as much as I used to... But I will sure help when I can!!!! I happened to have this one on hand. Here you go Doffo!!!! Enjoy!!!!!
  13. guitar_199

    Did I miss a memo or something??? (GE 3-5811B related)

    I will take a look at those when I drag it out again! Thanks!
  14. guitar_199

    Did I miss a memo or something??? (GE 3-5811B related)

    To make things more clear, I am posting two pics more!!!! The area of concern is on a page split... so I have screen shot each area to try to get the most of what is involved here. Part One shows the microphone and the mic jack with the wiring trailing off to the right. Part Two Shows the...
  15. guitar_199

    Did I miss a memo or something??? (GE 3-5811B related)

    I am definitely the 5 pin DIN and I confirm that the pinout you supplied is correct on this radio.
  16. guitar_199

    Did I miss a memo or something??? (GE 3-5811B related)

    Dan, most likely I haven't done a good job in describing what I meant. I'm going to try to write in support of the pic I uploaded: If you will, look right in the middle of CKT TRACES 19, 80 and 81.... where R57, R59 and C83 meet together. That is the "tie point" I was trying to describe...
  17. guitar_199

    Did I miss a memo or something??? (GE 3-5811B related)

    Def Definitely 5 pin DIN. That is what the SAMS 148 says, and that is indeed what it is.
  18. guitar_199

    Did I miss a memo or something??? (GE 3-5811B related)

    I bought this thing for $10.. knowing fully well that it may work fine.... but it may not. That is exactly what I wanted it for. I am now looking at it on the bench. (By the way, I am a hobbyist at this... not a pro that is doing it for customers. Just me having fun!) Receive is excellent...
  19. guitar_199

    399 JJ - Mods-for-Upd858-Chassis

    You aren't kidding!!!!!!! I have actually downloaded it several times.... and squirreled it away in several different places!!!!!!!! If I am remembering right.... there is a place in there in one of the audio circuits that he claims ONLY the R/S TRC-458 replaced a diode with a resistor...
  20. guitar_199

    This may be dumb..... (?? why do CB ops use LSB most of the time ??)

    I've pondered it a few times but never really put much into it. I know that most hams, above 10 Mhz, use USB and I've never really thought about it. But something hit me just yesterday.... and it makes me wonder if it doesn't have something to do with it!!!!????!!!!! Before 1977 (in the 23...