I have recently started to operate RTTY for the first time with an
FT1000MP. I have noticed a quirk with the rig which is repeatable
and whihc I had not noticed before using RTTY. If I am in RTTY
mode, have the EDSP engaged and in the narrow bandpass mode I
will sometimes change frequency down to the cw segment, and
then change the mode to cw to listen to a cw spot from the DX
cluster. When I hit the cw mode button under these conditions
there is a nasty ripping sound from my speaker which quits after a
couple of seconds and there is no audio out. If I disengage the
EDSP the set works fine, but if I reengage the DSP there is no
audio out.
Upon tuning the power off and restarting everything is fine.
If I repeat the above sequence and have the EDSP button engaged
but only noise reduction on and no bandpass filtering the EDSP
does not misbehave.
I can work around this problem if I remember to turn off the DSP
before moving/changing and I don't want to ship the unit back until I
have to, but I am curious whether this is a known problem or just
peculiar to my rig. I don't recall seeing it discussed on this
reflector.
Robert L. Carroll W2WG X-AA2UV
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