[Elecraft] K3 Output power difference

[W0MU Mike Fatchett]

Curious,

I am not running the beta but did the calibration and 5 and 50 watts seem
very close, I have seen that I have to turn up the power knob past the
indicated 100w to actually get 100 watts out.  This is on an array solutions
Powermaster.  I have not tried it with my LP100.  The difference was only
about 5 watts.

Mike W0MU 


"A slip of the foot you may soon recover, but a slip of the tongue you may
never get over." Ben Franklin
-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Ken Kopp
Sent: Sunday, February 08, 2009 10:41 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] K3 Output power difference

I recently loaded beta ver. 2.80 and all seems well -except- there now
appears to be a power output vs. power indicated difference of about 10W on
all bands, including 6M.  

Setting the radio at 100W on the display delivers 110-115 watts output as
indicated on two Bird wattmeters that I have confidence in. There are two
Birds involved ... one in the 160-10 antenna #1 output and another in the
antenna #2 output.  Both agree when swapped between the outputs.  Readings
were taken while transmitting CW key-down into a 50 ohm dummy load.  A
second load was substituted for confirmation, BTW.

I've run the TX calibration routine in the K3 utility program with no
change.

I recall reading posts abut this issue recently, but no longer have them
available.

Anyone else observe this difference after loading 2.80? 

73! Ken Kopp - K0PP
      ElecraftCovers at rfwave.net
      http://tinyurl.7lm3m5

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