Mike Harris wrote:
G'day,
Has anyone else noticed a slight chuffing of the CW sidetone when in QSK
mode. The chuffing is absent when in manual TX. I guess it's probably
the change over from band noise to sidetone. Nevertheless it sounds odd.
Mike,
Try reducing the audio gain a bit or increasing the sidetone level and
see if that reduces the phenomenon. If so, I believe it is exactly what
you say, the change-over, etc. I notice the same thing, and have viewed
the audio on a scope looking for artifacts and haven't found any.
There's a similar problem when there are a lot of signals in the
passband. I think it's because the QSK is *too* good -- very fast, and
the sidetone is shaped to match the RF output.
Wayne has talked about making some sidetone characteristics adjustable
to make it easier to monitor in noisy or crowded conditions. This is
probably not going to happen tomorrow, though!
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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