Mike,
Is there any chance you have the K60XV option in that K2?
If so, you can set split the transmit path into 2 pieces because the
Transverter output takes its output from just after the bandpass filters
- i.e. - it does not use the Q5, Q6, Q7 and Q8 stages.
Set up for a transverter band operation with the output in the range of
1 mV - It should not matter which is the IF band.
Monitor the output at the Transverter output to check for distortion.
If present, the problem is in the RF Chain before it reaches the
amplifier stages.
If it is clean there, look at the RF Chain after the bandpass filters.
73,
Don W3FPR
On 2/3/2019 1:26 AM, mustang65 wrote:
Don,
I have done some measuring on the powerstage.
dc voltage during tuning is 14,1 v
Bias Q7 is 0,652v when tuning.
U1 pin6 43mV on ssb transmitting.
I get about 10w max output (do not have a bird)
all measuring was done with a fluke 179.
Q6 gets mutch varmer then Q7,Q8 is this normal?
The strange thing that is confusing me is when the k2 has been turned of
over the night
there is almost no distorsion when I start to transmitt .
then it slowly arrives in the first couple of minutes.
73 Mike sm3xgm
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