[Elecraft] K3S - DATA A vs AFSK A (HP)

HP pfizenmayer at q.com
Sat Dec 21 14:51:53 EST 2019


Ahaaaa-- I thought since I had the MMTTY demodulator set to 915 -170 and K3s set to 915-170 I was matched --- 

NOPE - in AFSK - in MMTTY setup I ALSO have to set "HAM DEFAULT" to 915-170 . Never mattered when I was running direct FSK. 

This morning after reading Mike VP8NO message I noticed that if I clicked on TX in the MMTTY window I got same 
deal - no ALC -nil in MON -made no difference with the AFSK FIL on or off - BUT if I left the TX on and 
clicked on ALIGN next to it lo and behold up popped the 7 bars - output power etc and diddles away. 
so just have to see if I can play games between WSJT and RTTY to get one LIN setting to work -but not a big issue. 


I had never tried to use AFSK on RTTY and had always used direct FSK but with the K3S I decided to get 
rid of my RTTY interface box . BUT lo and behold when using AFSK the MMTTY "HAM DEFAULT" has to be set 
to 915-170 -does not matter in direct FSK so I just never thought about that . But setting it to 915-170 away I went 

Thanks Mike 

Hank K7HP 



Message: 23 
Date: Sat, 21 Dec 2019 03:35:34 -0500 (EST) 
From: HP <pfizenmayer at q.com> 
To: Elecraft at mailman.qth.net 
Subject: [Elecraft] K3S - DATA A vs AFSK A 
Message-ID: <717399956.13432056.1576917334111.JavaMail.zimbra at q.com> 
Content-Type: text/plain; charset=utf-8 

K3S using internal USB codec and W7 . 

I have an issue I dont understand --- N1MM /MMTTY -- RTTY --- using VOX for PTT. 

If I leave LIN OUT levels (about 35) and Windows levels (49 percent) then WSJT -sets up with 4 bars ALC 5th flickering - 
makes no difference if I run WSJT alone or run it thru N1MM running WSJT no change in settings . 

Then try to use AFSK A for RTTY I get no ALC bars at all - I see the RTTY diddles on the MMTTY screen - nothing I do will get any bars 
if I do nothng but switch to DATA A change nothing else - I get solid 7 bars and have to reduce MIC gain (LIN) to 10-11 from 35-37 to get 4 bars 5th flashing . 



I have the RTTY freq set 915-170 -MMTTY decodes fine in RX. 

What am I missing ?? 


Hank K7HP 





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