In MARS, we use a mil data mode called M110A which requires 3 KHz of TX and RX 
audio bandwidth to achieve a low error rate at the higher bitrates (2400 and 
4800).  I've been trying it using DATA A, but error rates on the RX side (for 
non-K3 RXs) is still higher than acceptable.  I'm assuming that the K3's TX and 
RX audio characteristics would be the same when using 3.0 KHz in ESSB.  Since 
we have at least two Navy-Marine Corps MARS members in SCA with K3s, I was 
going to test RX error rate with each RX set up on ESSB 3.0, while my K3 was 
set up the same way for TX.

Another way to assess usability is to run the N-GEN into the K3 RX while in 
ESSB 3.0.  The output audio spectrum should show a clean audio band.  Has 
anyone in this group done this already?  If so, could I get a copy of the 
results?

73 and Thanks,

Matt Zilmer, W6NIA/NNN0UET SCA


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