K2: power out issue on some (but not all) bands

[Ron Hahn (EI2JP)]

Colleagues,

My rather olde K2 (SN 79) seems to have developed a "power issue".  I  
notice recently that my wattmeter seemed to be reading a bit low on  
17 metres and thought it warranted further investigation.  So, I set  
the displayed power out to 5 watts on each band and here's what I got:

80 - 5.0
40 - 5.0
30 - 5.0
20 - 5.0
17 - 0.7
15 - 2.5
12 - 4.5
10 - 2.0

At first I thought something was wrong with my wattmeter (Oak  
Research WM-2) so I checked with an attenuator and Boonton power  
meter and my measurements are spot on.

On every band the power meter (on the radio) reads at 1/2 of full scale.

Any suggestions?

Thanks for the help,

Ron
--
Ron Hahn - EI2JP
Grid:  IO52GA  CQ: 14  ITU: 27  IOTA: EU-115
FISTS: 10883 QRP-ARCI: 12584 G-QRP: 11968
Club Web Site:  http://www.ei1karg.com
QSL Info: http://www.qrz.com/detail/EI2JP
Mob. [phone]



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[John Magliacane]

Hi Ron.

If you're seeing reduced output on 17-meters and higher frequencies, it might
be an indication that only one of the two final transistors (2SC-1969) is
functioning.


73, de John, KD2BD


Visit John on the Web at:

        http://kd2bd.ham.org/
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