Mike,

Is the mark tone in MMTTY set to the same frequency as you have set in the K3?
IIRC, the default mark tone in MMTTY is 2175.

73,
Don W3FPR

On 1/6/2016 6:47 PM, Mike Murray wrote:
Bob, Joe, Bill & Mike,

Since I'm new to RTTY, I probably didn't describe my question in correct
terminology - I mainly only operate CW.  I'll try again....

I'm using DATA A/AFSK A, setup for low tones (915/170) and the RTTY dual-PB
filter.  To illustrate what I'm hearing/seeing, imagine tuning down from
14.090 until you hear and can decode an RTTY signal.  Then continue tuning
down 915 Hz (to what I probably erroneously referred to as zero beat) and
then down another 915 Hz, I can now hear the same signal but inverted
(slightly weaker, but definitely there).  It is not decodeable, but it is
definitely there.  I assumed (yeah, I know) that the opposite sideband
should be suppresed, but I think that's what I'm hearing.  Any advice will
be appreciated.

Mike - W0AG



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