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Ham Radio Version 3.2 (Chestnut CD-ROMs)(1993).ISO
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ts140s.3
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1990-08-27
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959b
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20 lines
TS140S.3
Subject: TS-140S Sidetone Mod
TS-140S Sidetone Mod
I recently purchased a Kenwood TS-140S after using it on CW for
about a week, I decided to try it on SSB and AM. When I pushed the
AM and SSB mode switches, I heard a constant audio tone emanating
from the rig. As I diconnected the rig, preparing to return it
to the factory, the tone stopped.
Investigating the circuit diagram, I noted that the CW key has
to be unplugged to kill the sidetone. There is no mention of this
in the Instruction Manual.
Perhaps my experience may save others the frustration I encountered.
Also, amateurs should pay attention to the proper use of receiver
noise blankers. I know of instances where operators were handing
out reports of distorted signals to outhers, only to discover that
it was their improper use of the receiver noise blanker that was
producing the distortion...
Ed, W6XM