[Elecraft] K-2 /100 Power Output Drop

Dennis Utley - AF7Y af7y2003 at yahoo.com
Fri Jul 16 16:50:21 EDT 2010


First the good news.  The receiver seems to be working well, even transmit
power is
at a full 100 watts (for a few seconds).  Then output drops quickly 
to 50 watts.  Thats the bad news.

I can set the power knob for output from 110 down to QRP power, and the
first
few seconds of transmission are at the selected power.  After the
first few seconds power goes instantly to almost exactly 50% of what
was manually selected.   100 watts becomes 50, 60 watts becomes 30,
and 40 watts becomes 20 watts prox, (Peak indicated power on a
calibrated digital peak reading  meter.)  (Model P-3000 by RF
Applications, digital readout into dummy load on 40 meters.
Indicating 1/1.  Same behavior if input to 1.1/1 SWR 40 meter beam.

After this 50% drop, transmission continues normally, quality reports
are good, and all is well, except my power is 50% of what it should be. 

Maximum power after a few seconds of transmission is only about 55 watts
Peak
SSB.

If I turn the radio off and wait a few moments.  It will again output
full 100 watts peak SSB output for a few seconds then drop to 50%.

Has anyone seen this before?  I have done a few searches on the 
reflector, but have not seen this problem discussed.  

===========================================
New Elecraft K2/100 -- Serial # 5290 .

Any help and suggestion is very much appreciated;
===========================================

Thank You,
Dennis Utley, AF7Y
7820 Caballero Dr.
Sandy, UT  84093

Emails:  dennisutley at gmail.com
            af7y2003 at yahoo.com

Phone: 801-733-5995
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