[Elecraft] K3 Question: AFSK-A or DATA-A for RTTY?

Bill Frantz frantz at pwpconsult.com
Mon Sep 15 23:46:19 EDT 2014


I find myself switching between Data A and AFSK-A quite a bit. 
The RTTY dual passband DSP filter (DUAL PB) can help a lot with 
QRM from nearby RTTY signals, and it eliminates much of the 
off-frequency noise. You can also turn on TEXT DEC to get the K3 
to decode the RTTY, giving you another chance with weak signals.

With cocoaModem I am always using the RTTY, rather than the 
Wideband RTTY or Dual RTTY options. The crossed loop tuning aid 
can't be beat. It simulates the CRT based tuning indicators used 
with hardware RTTY receivers.

73 Bill AE6JV

On 9/15/14 at 7:07 PM, w6jhb at me.com (James Bennett) wrote:

>With PSK31 and the JT-modes, I've always had the K3 in DATA-A 
>setting. RTTY "seems" to work in either DATA-A or AFSK-A. Fred 
>Cady's K3 book states that AFSK-A is "optimized for RTTY". How? 
>What is the real benefit to switching to AFSK-A mode for RTTY? 
>Is that what everyone is using, or is DATA-A just as good?
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