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I guess I'm not allowed to post on this thread anymore??? I was just getting ready for a good discussion... My Bad...

Okay got it. Looks like the engineers left nothing up to chance. Lovely, using one part to take the operation of two, R218 is in the loop of the emitter output and returns back to the base. The innovation is astounding!!! I wish I could think like this, perhaps someday but not today.

On the backside?

@Low_Boy Great pics!!

@Handy Andy Thank you for the schematics and explanation. I'm going to go out on a limb here and postulate that in the top schematic feed back is via R218 (with some influence of VR11)? And on the second schematic the feed back is via R247? Is that correct? Actually the GF and I...

@Handy Andy Yes, I would have thought that the FETs would have the same requirement. I'm not totally familiar with this configuration (except for class where it was discussed in three way phasing with a compare and contrast with delta configs). But overall it makes sense. Super funny, I...

Could this be damage from a parasitic oscillation? I ask because it looks like all the feedback was removed during the conversion process.

@TIN_CAN I think the meter has a super wack pack tune job.

His meter says peak power so I assume its reading peak instantaneous power not PEP. I still have alot to learn but these numbers don't work if the peak meter is reading PEP. I would imagine the average would be a great deal higher if that was the case. Running the numbers using 150 watts...

Thanks much for the data. I appreciate it. Best

Thats cool. Is the max deadkey the same as stock or about? I'm more curious about the power output than the swing mod. Thanks for your reply.

@snippits75 May I ask how many watts you get with the 2312?

@Handy Andy I sincerely hope your wife is okay. We prayed for her speedy recovery. So mote it be.

I've used an LM317 connected to the switched TX 8v in my Cobra 29, a 220 ohm resistor and a 500 ohm pot as R1 and R2 which gives 1.25 volts - 4.00 volts through a 470uH inductor connected to the gate. I it set for 3.7v.

Perhaps a bad main voltage regulator? Just my $.02

Cool, I document everything I do in an "electronics" log book so I'm with you on any data is good data except when its bad.

@HandyAndy, I put the radio back up on the bench, put the 1k in (checked thrice it to make sure I was on the right spots). I did experience a drop in power, not much change in the waveform. Therefore I removed the TIP120 - problem solved. Thanks again for your help. Best

I'll put the radio back on the bench and try the 1k resistors. At this point, I feel this mod isn't going to work out for my setup but its always exciting to try something new and record the data for future reference. Thanks for the info. Best

After a few attempts I still haven't got this mod to work correctly. The radio would always over mod. Didn't look so good on the scope and then decided not to run it. The performance was the same whether I "stuck" it on with double sided tape or drilled a hole and "installed" it with a...

During testing of a freq mod on a Cobra 1000 we installed one of those small 20k pot and used the blank mounting for a dual pot connected to a svxo for "fine" and coarse". It provided 25khz of slide. Using 5MHZ crystals and taking control of the RX/TX signal provided a 80 channels + 2.5...