[Elecraft] K2 / KPA ALC problem. Progress, but ...

[Chris Kimball]

Some progress..

1. The BFO setting for the R bar mode was set incorrectly, resulting in a
dsb-like transmission.  The 't' in the filter settings really does mean that
the FL1 BFO is used for transmitting.  

2. The power levels were within 1 watt at 20 or 30 watts via a DL2
measurement scheme. No change made.

3. R98 was adjusted going up to 1400 ohm before 10 meter levels reduced a
bit.  R98 was set to 1100 ohms. The variance at 7.073 MHz for a 5 W power
setting was improved.

But ..

K2 at 5 W and KAT-100  perform nicely in digital modes.  With the KPA and a
power level of 40W, with the KAT into a dummy load the rig works nicely,
too.  With the antenna tuned by the KAT automatically to 1:1 SWR, the ALC
level display changes to 1 bar and the RF output level shows more motion. 
The signal, by reports, still distorted.

During transmission (Olivia 8/500) I can hear a weak version of the
transmitted signal on the speaker or headphones.

Suppose the KAT isn't really matching the antenna and the 1:1 SWR reading is
false. Would that cause the ALC/RF output effects?







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