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Here's the link to the mod written by Rick. I'll let you look it over while I'm soaking in your response. http://www.cbtricks.com/miscellaneous/fet_papers/mosfet_conv/graphics/6900xxx_ssb_mosfet.pdf I do have a frequency counter. I don't have a spectrum analyzer but I do have a scope, AF and...

Loosecannon!! Thank you for chiming in here. I do believe you are absolutely correct. I did the dual final mod myself. Followed the procedure given by Rick Jackson. Copied exactly per his instruction with the exception of the IRF520's. I used 3 FQP13N10's instead. Power Amp (Q54) was switched to...

I don't know if I'm on to something here finally. Checking voltages on the TX Mixer (IC9), I found a couple voltages that seem to be off. Heres what are called for, and what is measured: Pin. Measured. 1 - 0.00TX. 0.00 2 - 8.23TX. 7.67 3 - 8.23TX. 7.67 4...

Robb....if that question is for me, the answer is... There's not. Waverider suggested in a post above, that I try one for my problem. I'm 100% certain it's in this radio. And not the truck

Thanks for posting Waverider. An oscope was used to do the alignment. The radio has 30 watts of forward swing on average power setting. I was always under the impression that a little reverse swing of SWR like that was normal. Just to be sure on the "ugly choke"...... This issue is happening...

I did Robb. Actually I've tried 3 diff mics. The think that really has me stumped is the fact that my other radio ( which is set up identical) works just fine in the truck. Same antenna. Same coax. Same everything. I've been reading on Galaxy's site about resoldering a few caps lower to the...

Works fine on the bench. With or without the covers. Just acts up on the antenna. Not the dummy load

Ok guys. Here's what's up with this demon 959 now. After going over every inch of the board till I was cross eyed, and replacing L40, I realigned and have this thing screaming 60 watts with outstanding audio. Modulation running 90% and I can adjust dead key to 4 on low and 15 on high. Transmit...

Yeah....I made a mistake when I decided to open my first radio. Lol I'm an auto mechanic by trade and that has led me to being a major perfectionist. If it looks like it has room for improvement, I must try to do it. Now I have one more hobby to add to the seemingly million other ones. Have a...

The AM limiter was not removed and yes I did replace it even though it showed good with the voltage checks. I have made progress since I first posted. Going back thru the alignment again, I noticed L40 was strange.... as in, when adjusting it, the wattmeter and the scope would jump as if the...

I was hoping for a bit of help here guys. I have a 959 that has very low audio and modulation. Low and high carrier settings adjust fine from 1-10 watts. I have replace the driver, and both finals, and checked voltages across the board. Watching it on the scope while turning vr16 shows very...