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Thanks for some of your thoughts here. I just got back in town and am working on this again. The driver tested fine but the finals did not. I replaced the finals and the trim pots. The finals now will adjust to 100ma as expected. I also replaced the driver trim pot and it will only adjust...

I have an RCI 2985DX on the bench (today) with low output power (2w AM and 8w SSB). It does give me output on SSB but no modulation on AM. I removed the 11 meter jumper to reset it back to its defualt frequency range and began an alignment. The VCO/PLL aligned great. I moved onto the TX...

I will add something here regarding the damage to the board by removing the caps. What I have learned is that there is not enough heat transfer and space in the through-hole pads that the cap is soldered to when the cap is in it. This inhibits removing or sucking out the solder first. The...

That's great!! At my tech level I was just using the one I had for a reference and not an accurate reading. In other words, I would see the 2nd and 3rd harmonic and adjust for the lowest level not for measuring to a certain level below the fundamental. Something like this could work fine for...

And one last thought/question. What does the amp do to this scenario? Amps are not my gifting. You can connect any other radio to this setup and it's fine but for this radio. When I have the radio on the bench It seems to be ok. I'll verify that in a bit. The audio sounds fine coming...

Thanks for each of your responses!! I agree with you on that thought but am still challenged with "what" is off frequency. I've aligned a ton of radios with the proper equipment and have never had this specific issue. It's warming up on the bench right now and I will go through it again. The...

Hi Everyone, I have an interesting condition I can seem to figure out. The user has a few radios that they use. When used they are connected to a Texas Star amp. with all but 1 radio the SWR's are 1.3 and they all have good audio. When they conect 1 radio (a Teaberry Stalker) the SWR's are...

Hi Everyone, On the bench is a President Lincoln 2+ with an interesting transmit issue. When you key the mic TX shows on the display but the radio stays in receive. This is on all of the modes. Any thoughts? Thanks as always!!

Well ok. Here is the updated alignment guide for anyones use. Let me know if there should be more changes. Thanks as always!!!

Yikes!! That was a miss! Thx!!

Hi Everyone, So, I was unable to find a service/alignment manual for a 29 with the same board (PC-900AF) and man are some of them different!!! I read through a lot of information including this one post on here https://www.worldwidedx.com/threads/cobra-29-ltd-classic-not-transmit.228821/ and I...

If it helps anyone with my question I made this alignment location diagram to assist with the alignment once I get those instructions. Thanks again!!

Where would you get the 66" whip?

Hi Everyone, I have a made in the Phillipians Cobra 29 (June 1993) with the NPC D2816C PLL and need to do an alignement. I can't seem to find the right alignment doc for it. Would anyone have a copy? Thanks as always!!

I hooked up the Lincoln 2 and turned power back to about 3 watts (what it took to trigger the amp) and it now sounds great!!! I did not expect to get a lesson in amps tonight but wow am I glad for all of your input!! It makes great sense and shame on amp builders for using HD when in fact they...

Oh my!!! I am reading about this amp and it may not actually be a high drive amp. Is that possible?

10 watts. I was told by the owner that you could go higher with a HD (high drive) amp. Maybe thats not accurate?

Hi Everyone, Now that I was able to get the Lincoln 2+ working the next thing was a linear test (Texas Star DX 350HD). The radio sounds great on AM without the linear on. When the linear is on the carrier is good but the audio is about 20%. When in USB or LSB the audio and signal are great...

Thanks so much for your direction here. The radio had a bad FET and regulator. It's back to transmitting again. Thanks again!!

Hi Everyone, I was asked to see if I could get this Lincoln 2+ transmitting again as I have sucess with these and some of the RCI boards with a similar regulator setup. The operator said that he did the 11 meter mod (but used a 10K resistor istead of a 1K) and then cranked up the SSB power, AM...