Galaxy DX-949 1 watt output

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guido203
Newbie
Newbie
Posts: 1
Joined: Monday 14th May 2012, 15:52
First Name: Wayne
Location: Boston, MA

Galaxy DX-949 1 watt output

Post by guido203 »

Radio Make and Model: Galaxy DX-949, Dual MOSFET Finals
PCB Number:
PLL Number:
Test gear available: Scope, Freq. Gen. RF Gen, D/L
Symptoms: Radio produces 1watt output, swings 4 watt, SSB 4 watt max output.

What is working: everything else

What has been tried: Re-align to base specs

Did it suddenly happen ?: Yes
Anything else that may be of help?: TX has audio, sounds good, just no power output. Draws 1.55A DK, 2.6A peak modulation.

Anybody have some pointers on this one? Driving me crazy. Been all over the board, everything looks good.
hackindave
Dead Key
Dead Key
Posts: 20
Joined: Wednesday 31st Oct 2007, 12:13
Location: usa

Re: Galaxy DX-949 1 watt output

Post by hackindave »

Did you check the voltage/bias on the final mosfets? If these are wrong, too much voltage will over drive and destroy and too little will under power the radio
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