[1000mp] T/R 'ping' heard

[Steve L.]

Hi,

I've got a Mark V purchased about a year ago that's
been working quite well.

Today I noticed a 'ping' in the Rx when it transferred
from TX to RX but ONLY when the Nar1 or Nar2 CW filter
is in. I use both 400Hz Inrads in Nar1 and both 250Hz
Inrads in Nar2. I've disconnected everything from the
radio, etc. NO effect.

Specifically:
'Ping' heard in speaker or headphones.
Heard regardless of power out or load.
Volume proportional to audio gain control.
Heard when releasing the MOX button manually, too.
Only heard when in Nar1 or Nar2 CW position.
No DSP setting affects it.

Anyone else have this? I just noticed it today but
maybe it's been there before, it's hard to notice when
you are listening to real signals, but easy when on a
dummy load or no antenna. It's always there, just
masked by RX noise/signals.

Thanks,
Steve N4SL Machias, WA



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