Many of you offered help with the low signals I was getting when I
switched in OPT1 on my newly built SSB adapter.
Thanks to Gary explaining how I could just whack on the signal path
through the ladder filter with one of my multimeter probes (not even
connected to the multimeter) and use the
On Thu, Oct 07, 2004 at 10:35:04PM -0700, John, KI6WX wrote:
A KX1 could trivially generate a FSK31 signal. Decoding it might require a
more powerful processor, but is doable. The interesting question is how you
interface the input and output to the operator.
Just an idea, and maybe a
John,
I would think the first step should be to add a reactance modulator and
simple interface to a computer sound card, ala the psk20, to the KX1 and
use it with an ordinary computer, running a program like MixW. Mixw
supports FSK31 by sending an FM modulated signal via the computer sound
Hi, all concerned:
I get the operation of the hfo in general terms -- the PLL part, anyway.
I'm looking for (links to or) a fuller explanation of what happens in this
process: number of points, interpolation, etc.
TIA 73, Dave, N3HE
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Hi David,
I'm looking for (links to or) a fuller explanation of what happens in this
process: number of points, interpolation, etc.
To find out on your own, you could try this:
1. Get a stable CW signal source.
2. Get the spectrogram program.
3. Setup spectrogram for very high resolution.
4.
Chas;
You don't need to add a reactance modulator to the KX1. The AD9834 DDS will
directly generate FSK. It would almost be a trivial mod for Elecraft to add
a firmware option for FSK31 that is activated through the key jack.
A computer is a lot heavier to lug around than a KX1. A small
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