From: "Al Parker" 
Subject: Re: [drakelist] Tr-4 Power Output


"Al Parker"  made an utterence to the
drakelist gang
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Hi Matt,
    No, it's not normal, but not necessarily soft tubes.  Is it that bad
on all bands?  If so, then it's probably not the tubes, as they'll lose
output on the higher bands and keep it on lower, unless very bad.  You
might check your plate voltage, if one of the diodes in the voltage
doubler's gone bad you could have low voltage and might still be able to
load to 400ma, getting maybe 150w input, and 100 out.   At normal
voltages, 400ma at ~700v, you'd have 250-290w in, and should see 160-180+
out.
    How accurate are the peak measurements?  If you're seeing 120w out on
SB peaks on the plate meter, that's reasonable, it's slow, and you
shouldn't see more than 1/3, maybe occasionally 1/2, of what you load up
to on CW.
73,
Al, W8UT
New Bern, NC
BoatAnchors appreciated here
http://www.thecompendium.net/radio/
http://www.hammarlund.info

----- Original Message ----- 
From: "Matthew E. McNeely" 
To: 
Sent: Thursday, February 10, 2005 1:31 PM
Subject: [drakelist] Tr-4 Power Output


>
> "Matthew E. McNeely"
 made an
utterence to the drakelist gang
> ----------------------------------------------------------------------
> I was wondering what is the real world output of a Tr-4? I have tuned
mine
> into a dummy load and at about .4 A I am getting around 100W in CW mode.
in
> SSB after tuning I see peaks of around 120 W.
> Is that normal or are my finals going soft?
>
> Thanks,
>
> Matt
> k1mcn
>


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