On Fri, 26 Mar 2010 06:38:26 -0800 (PST), David Windisch
wrote:
See comment below:
[snip]
>After key-up, on quiet bands or a dummy load, I hear a short "tail" (sounds
>like an echo) at the end of each code element.
After 20 years of using good QSK rigs, I have occasionally noticed the
echo you
Dunno what I was thinking, re DELAY control! Of course Tom is correct.
Specific to the Alpha (p-i-n diode QSK), the Ip leds overshoot dimly from
normal Ip to as much as 1.5A at key-up in QSK mode.
Adjusting DELAY has no effect on this.
The led overshoot goes away in non-QSK modes if DELAY is s
Hi Dave:
About 25 or so years ago, I added full QSK to my Alpha 76PA (using
the QSK circuitry from the Alpha 78 (which had QSK from the factory).
Since that time, I've used the QSK-ed Alpha with every radio I've
had, full QSK, with NO HOT SWITCHING... EVER! And I'm NOT(!) using
the built-in (
Hi, all concerned:
The time from key-down to rf-available, is well-defined, and controllable
with the DELAY knob from 8ms to 2s.
Is the time from key-up to no r-f output as well-defined, and controllable?
My concern is hot-switching an amplifier, in my case either a Ten-Tec 425 or
an Alpha 89,
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