Recent content by guitar_199

Recently repaired mic tester.... says mic is NOT producing audio out. Don't know the reason yet.... (wiring or element????). But I'm pretty sure the mic is the problem on the MOD & PA issue.

okay... it needs fixing!!!!!!!! Both RCV and TX (carrier only) work for 2 to 3 minutes. WHILE it is working.... modulation audio does NOT work, RCV audio DOES work great, PA does NOT WORK EVER. Something is happening after a few minutes that shuts of BOTH RCV and TX. I also notice that the...

I'm the nut that does this, once in a while, for retirement "fun". Putting a radio on the bench to see what is up with it.... (one of the many radios I bought JUST TO SEE if it needed anything fixed... or maybe just an alignment!). So... there may ACTUALLY be nothing wrong with it... in which...

Hey Saturated! I looked up where Port Neches is. If you are familiar with the Houston area at all I am in Deer Park on the east side of downtown. I go through Baytown to I-10 and I'm sure you know I-10. Glad that you got that radio up and working!!!! Bob

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...

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...

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

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!!!

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...

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...

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...

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...

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.

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...

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