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Yeah I was wandering why would my 2000 meter lights dim when I key down the mike? Also I am only seeing 1 1/2 watt dk swinging to around 6 watts on AM, also to around 6 watt on SSB seems awfully low to me. Tried to set the bias on the driver/final with no luck the pots seem to make no difference...

I need a schematic

There is a 10watt resistor in line with the supermod switch I don’t see a choke everyone on the radio says it has a bad hum in my audio man I wish I could find out what is causing it

Yes I replaced all the rectifier diodes for that matter everything but the resistors have been replaced on the HV Power Supply board. Still has a hum in the audio transmitted could it be the Ohmite: Z-14 Axial Leaded High Frequency Inductor?

Ok I got the keying problem fixed it was the trimmer on the back of the box was out of adjustment but the hum is still in there also there is another trimmer inside the top cover by the driver tune varible capacitor what does it do? The tuning knobs are kinda erratic would cleaning them help and...

Now the amp will key but when it’s on high it won’t unkey really about to just give up on this old varmint and also people said there is a bad hum in my audio so yeah. I replaced all six filter caps so that should’ve took care of the hum I would think????

Still cannot get the keying circuit figured out it is literally driving me nuts!! Any help would be awesome

2n3416 and 2n3417 got them from mouser

And one diode I replaced

I was just wanting to replace all the parts with new ones whole o had the board removed there was two transistors a

Got all the new caps in powers up fine but relay won’t click when I key the mike, if I manually push down on the relay it while having the radio keyed it transmits rf on the watt meter what could be causing this? I also replaced the doides and the two transistors on the hv power supply board.

PCBX-9821R23 pics would help greatly

Yeah I have amplifier board out of the Stryker SR – 497 HPC and was wanting to hook it up in my galaxy DX99v But have no idea where to hook it up at inside on the board of the galaxy and what parts I need to remove or add any help would be appreciated

ok i got all the capcitors out and am fixing to order them i have a question, do the 100mf 350v caps have to be exactly the same values?

but why does the three capacitors have continutiy between the positive and negative leads? How do i fix the problem because its just too nice of a box to just be running half throttle! I want to give Thanks to everyone's input on this thread. 73's

Here is the pic

Yeah I hooked the wire where you said and it just blows fuses. I checked for continuity (blue arrow in picture) and in fact had it at these points don’t know why but the amp does work with the wire unhooked I’m just confused about the three capacitors !!!!

So I am still unsure where I need to connect the wire……

960V DC on High 600V DC on Low

The only way to see the other side of the board is to remove it the grey wire I’m asking about is on the same trace as the yellow one on the bottom right of the board and the yellow wire I believe goes to a relay