Andy,
The cw drift is only if you key too fast and long stretches with internal
keyer, and do not let the micro which shares the keying job and the PTO
frequency control job have time to react to drift with time and temperature.
Let the rig reach a stable temperature before transmitting. One suggested
lessening of drift due to temperature of the final is to run QRP, increase
heat sinking of internal driver and finals, and to put a fan blowing on the
heat sink. I think there is a possible improvement if you used an external
keyer, but I have not tried that.
Do you not ever send BT and pause in your CW? I do not see any drift at hand
key speeds.
The whine in the phones is due to use of headphones in the front panel jack
which is really an external speaker jack. You can have no whine at all if you
use COMMUNICATIONS phones of the Trimm 1000 or 2000 ohm type, or any high
impedance military phones, 600, or 15,000 ohm like the ones from the late
'50's which I use. These are sometimes seen as NOS at swap meets. Antique
Electronic Supply sells new 2000 ohm head phones like TRIMM made. An audio
filter on hi fi phones makes CW much less tiring, and cuts any whine from
computer or display.
I found those two solutions very satisfactory with my Scout, either at 50
watts or QRP. A fan or cool environment circulating air around the heat sink
and stiff 12 or 13 volt power have been entirely adequate.
The Scout is a great rig.
As to the Omni, I have seen comments on this list that some do not hear any
harshness to Omni VI plus keying at all. The reported "problem" was on
original Omni at W1AW on 20 M. Pretty insignificant it would seem to me.
After all, what you want an Omni for, or a Scout is to hear things you cannot
with Yaecomwood!!!
73, Stuart K5KYH
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