Re: Dial setting 60m digital frequencies?
Posted by
KEN-3 on
Mar 08, 2012; 7:37pm
URL: http://elecraft.85.s1.nabble.com/Dial-setting-60m-digital-frequencies-tp7354819p7356047.html
Rich,
Thank you very much! I've only had the K3 for a couple of months and I'm still learning! That was an area I had totally missed!
73, Ken
WA8JXM
On Mar 8, 2012, at 9:10 AM, Richard Ferch wrote:
> Your calculations appear to be based on using AFSK A - REV (USB) with a
> Pitch setting of 2125 Hz. The probability of error is very high using
> such a difficult choice. Use DATA A instead; it's much simpler. I can
> see no reason to use AFSK A (normal or reverse) in this situation unless
> you really enjoy making life difficult for yourself.
>
> In DATA A, set the dial to the same setting you would use for SSB (1.5
> kHz below the channel centre) and use 1500 Hz audio.
>
> If you were doing PSK31 with CW paddles and no computer, you would use
> PSK D, and in that case you would tune the dial to the channel centre,
> the same as in CW. On receive your audio would be at 1010 Hz.
>
> 73,
> Rich VE3KI
>
>
> Ken WA8JXM wrote:
>
>> With the new ability to use PSK31 on the 60m channels, I am uncertain about how to \
>> get on the proper frequency. FCC only allows operation on precisely the center of \
>> the channel (e.g. 5405.0).
>>
>> As best as I can tell, for 1500 Hz audio, the K3 should be set for the CW frequency \
>> +0.625 kHz in reverse Data mode (or the SSB channel frequency +2.125.) Channel 5 \
>> (5405.0) would require setting the K3 dial to 5405.625 with the PSK signal at 1500 \
>> Hz. Channel 2 (5348 center frequency) requires setting the K3 dial to 5348.625 Data \
>> Rev.
>>
>> Can anyone confirm my calculations?
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