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Thanks Nomad for your suggestion!!! The radio does not have a shorting board but I did turn the power to 0 and was able to align the TX. I want to verify the bias as the radio sounds pinched on TX but the alignment directions I have show the shorting board. Any thoughts as to how I would...

Hi Everyone, On the bench is an RCI 2950DX 6 the I needed to return the clarifier to stock (done) and align. The issue I am having is that I can align the AM Frequency to 10.1000MHz per the spec but but when I try the TX alignment the frequency oscillates or is unsteady. I am using the...

Good Day Everyone!! It's been a while. I have on the bench a TR 696 that was hacked in it's past. I did get the L3 coil from Enterprise312ok (he is the man!!). Now onto an alignment. The oscillator alignment goes fine but the XMIT alignment is messed up. It throws a carrier on SSB and has no...

I did not find a source except for finding a parts mic. Sorry!

I think the obvious answer is.....beauty is in the eye of the beholder. If you prefer a newer radio, that's great AND you are not wrong. If you prefer the older radios, that's great as well AND you are not wrong. As far as performance goes, some of the older radios still hold thier own with...

Maybe try measuring the voltage at the cap while in RCV and XMT. That would be interesting to see. Also, if you have a scope try the same thing to see if you get a sawtooth (ripple current) reading. https://resources.pcb.cadence.com/blog/how-to-measure-power-supply-ripple-on-an-oscilloscope

That's a great point!! I've really only checked channels 36-42.

Hey Brandon, All 3 modes were affected. It will be interesting to see if X1 (10.240MHz) or X2 (14.55MHz) is causing this. The alignment went well so I do not believe that any of the VR's or trimmer caps are at fault but....that is a possibility.

Here is a followup to this frequency issue/case study. Two days ago I turned the heat on in my office and have maintained a room temprature of 72 degrees. I waited 2 days to allow the radio to settle. I am unsure how necessary that is but it is a good reference. The radio is now 100Hz high...

Hey Everyone, I guess the 1st thing to do is explain the case study. I have a 198? President Jackson export radio with the PB 042 board in it (see attached pic). I have completed a full recap. removed the glue and aligned. The only mod is an unlocked clarifier and the rest of the radio is set...

Ok, so the radio is back in service. Thanks again Nomad for your help on this one!!! Check the attachment out for the final result.

Thank you for this Nomad!!! I have 2 questions for you. 1) In the instructions it says to remove D32. That Diode is coming off of L22. Is that supposed to be D52? 2) In some of the mods online they call for removing D51 and sometimes jumping it out. I am unsure what that would accomplish...

Hey Everyone, So, while I am waiting on some parts for other repairs I decided to look at a Cobra 2000 for a local op. He asked to have the extra channel mod taken out but would like the clarifier mod working. Removing the channel mod was pretty straight forward as I found a mod online that...

I'm sorry, as I was reading this I was getting a can of gas and a match :). What you explained regarding R322 "the range" of the clarifier makes so much sense to me after I spent a lot of time in the rinse/repeat mode. Let me ask you this. I I adjust L303 (the 17.0555 adjustment) to get the...

Hi Everyone, So, on the bench is a Cobra 132XLR for an alignment. The frequency alignment is a little different than most radios I have worked on. It starts with a frequency check (no adjustments. It's looking for 5.12 MHz and its reading 5.11814 MHz. You then adjust L303 for 17.055 MHz...

Hello AK, I've not worked on a 2517 before but I did look it up. I am assuming that it is a dual final radio as it is listed as 10 watts AM and 25 watts SSB. That being said, if the radio is doing 14 watts AM it sounds like the tansmit portion is working although maybe not like it was. The...

Regarding the part for Enterprise312ok... If anyone has a Cobra parts radio models 85, 132 (non XLR) or 139 (non XLR) those radios have he same part# he needs. The part is an RF Transformer L1784. Dynascan part number 066-015-9-008

I just PM'd you. I was so excited, I have a Cobra CAM 89 parts radio. I was sure it would have an exact replacement for your T7 but it does not.... Darn!!

Hi Gang, On the bench is a Texas Ranger TR696F base with VERY poor receive. I knew I was in for a challenge as many case screws were missing. As a side note, I am using the DX 959 non-mosfet service manual for this one. I started with a basic alignment and as we all would expect the PLL...

I must say, you have the best title for a tread in a long time!!!!!