I have completed #4554, which consists of the K-2, noise blanker, DSP2
unit, 160 meter, 60 meter and SSB modules.
I bought a used Bird wattmeter through Ebay, which was finally delivered
yesterday. Last night I went thoroughly through all of the alignment
and test procedures. I did not have a signal generator, so I used
on-air signals from the antenna, which is an acceptable multiband dipole
mounted ten feet above the roof of my home, fed by coax. I then peaked
all bands properly using the Bird and a dummy load. Everything tested
out well and all of the transmit power tests worked fine on all bands
using CW. I have been able to generate power at or above 10 watts on
all bands.
All other modules have also checked out fine. The DSP unit works
exactly as specified, and I have set all of the filter settings
according to the recommendation in the SSB manual.
The last tests I sought to run involved SSB transmission. I have not
completed those tests as I did not yet have a separate receiver set up
to check on the quality of broadcast. I plan to tackle that tonight.
By the way, I bought a new Heil MD 2 configured to Elecraft standards,
and I installed all eight pins and the resistor.
I did check the transmit function at 5 watts into the Bird and a dummy
load. I checked it on all bands.
I found that on some bands the meter would peak right at 5 watts when
the PTT switch was pushed on the mike. However, on some of the bands
the watt meter would barely register, or else it would register at a
reading below 2 watts.
Is there a problem here, or is this normal?
If it is not normal, what circuits are likely to be suspect?
I am not an electronics expert. At what point in the circuit flow does
the SSB transmit signal become frequency band-dependent.
Thanks for your feedback.
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