[Drake] Drake Power Output

David Walker vk2na at bigpond.com
Mon Dec 14 15:45:29 EST 2009


Okay... thanks guys for the info.  I have fitted my AC-4 with new caps
and as yet I have not checked the voltages.  I do not have the nerve to
do that just yet.

Say on 20m I can tune to just over 200w but on SSB I struggle to get
more than 60 or 80 watts PEP.  The ALC is active and it starts
indicating on the S meter at around 50w PEP. 

My PEP meter is just the MFJ-989C tuner and I'm using the built in dummy
load.

Well it sounds like I definitely have a problem. I get nowhere near the
PEP power output on 15 and 10m as you guys are suggesting. Personally i
suspect it's probably a combo of ALC and soft tubes. 

Also the power supply does get a bit warm after some use.  It does not
get as warm as it used to with the old caps.  I replaced those after I
noticed a hum on my CW tone.  After replacing the caps the hum has gone.

Regards,

Dave
VK2NA



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