On Fri, Oct 08, 2004 at 04:35:24PM -0700, John, KI6WX wrote:
I thought about that option. However, if you are going to use CW input and
output, why not just send CW in the first place. CW probably offers better
weak signal performance than FSK31.
Most people don't do CW because of it's
Uz,
CW at 31 WPM is a little fast for me. I suppose I could get my code speed
up, but basically I agree with John.
I tried receiving some PSK31 using a FSK31 demodulator last night with the
hope that maybe it would decode something, but no joy. However, a FSK
demodulator should nearly as
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
: Friday, October 08, 2004 3:58 AM
Subject: Re: [Elecraft] Re: KX1 PSK31? [how about FSK?]
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
The original PSK31 implementation included an option for FSK31.
Theoretically, PSK31 should provide a 2-3 dB improvement in signal to noise
ratio over FSK31. In practice, it is necessary to back off the power
amplifier by a few dB to keep from generating an excessively wide signal,
whereas FSK31
I would find the idea of a small RTTY rig an excellent
idea. Obviously PSK is a no go because its an audio
signal from a computer hence needing SSB.
RTTY would be fine as it would allow data modes to be
used by the small DXpedition fraternity without the
need for a laptop etc.
Dave Kearns
FSK may be easier to do technically, but what's the point if you can't
make any contacts?
I think it needs to do PSK. There isn't enough MFSK activity. And the
trouble with RTTY is, weak QRP signals aren't as copyable as MFSK and
PSK signals, and just to compound it, many of those who operate
On Tue, 5 Oct 2004, Julian, G4ILO wrote:
FSK may be easier to do technically, but what's the point if you can't make
any contacts?
I think it needs to do PSK. There isn't enough MFSK activity. And the trouble
with RTTY is, weak QRP signals aren't as copyable as MFSK and PSK signals,
and
I would also express my huge interest in a mini-qrp rig (KX1/K1/etc)
that is multi-band with a built-in antenna tuner for digital modes
(PSK-31/MFSK/etc).
My KX1 is a superb radio. I absolutely love it and rate it a strong 9
out of 10. To make 10, and be used much more for me personally, it
Subject: Re: [Elecraft] Re: KX1 PSK31? [how about FSK?]
| This could be accomplished with a K1 using I0CG's SSB modifications
| (http://it.geocities.com/giulianoi0cg/i0cg_home_page.html). It's a pity
| Elecraft didn't take this idea and create an official K1 SSB for those
| of us not brave enough to do
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