Craig,
After reading your note I checked my K1. There is a signal in the vicinity of xx99.7 -
*but* when I 'CAL' to set that signal at 99.7 my freq indication is off. It looks like
one or two things may be happening:
1) the signal should not be set at 99.7 but rather at 99.7 minus the offset you are using
(my offset is 800 Hz so I would set it to 98.9)
and/or
2) my '99.7' frequency is off to begin with and then moves away from 99.7 as I go up in
freq. On 15m it is down to something like 98.2 (from memory, may be off).
After CALing to 99.7 minus the offset, the display is fairly close, but still off a bit.
If I cal against a better standard my displayed freq will track all of the following:
1) W1AW bulletins at 3581.5, 7047.5, 14047.5, 18097.5, and 21067.5
2) the beacons on 14100.0
3) the beacons on 21150.0
4) on 30m I can check it against WWV (I have the 150kHz option installed)
If you don't have the 150 kHz option you can still check against W1AW. Their freq is good
to use for CALing.
Also, the signal is not really there to use for calibration - it is a birdie that happens
to fall at ~xx99.7. I think what really happened was Wayne tweaked an oscillator
frequency to put it there - and get it out of the band.
And keep in mind that this is from a sample of one, so may be off. Maybe someone else
will chip in with their experience.
73 de dave
ab9ca
Craig Rairdin wrote:
I didn't get any responses to this question last week so I'm going to try it
one more time:
The K1 manual makes a very, very brief mention of using an internally
generated signal to calibrate the receiver. It seems to indicate this signal
is at "99.7". With an antenna disconnected I hear a carrier that is
definitely in the neighborhood of "99.7" on 40, 20, and 15M, but on 30M I
don't hear it. OTOH, I set it up with 10.1 MHz as the low end of that band
so maybe the signal is at 9997 KHz and that's why I'm not hearing it. (I do
hear a carrier around 10.170 MHz with no antenna connected.)
So... am I understanding that this signal does exist and its purpose is to
calibrate the receiver or am I not understanding the sentence fragment that
mentions this signal? And is there something I can use on 30M?
FYI the K1 is my only radio so I don't have anything to calibrate it
against.
Craig
WB0GUU
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