[RTTY] FW: OO Advisory kk5oq

k4sb@bellsouth.net k4sb at bellsouth.net
Thu Oct 20 23:09:43 EDT 2005


Mike wrote:
> Good point about the "keyclicks" from the FSK set-ups.  Any ideas on
> what causes the 'clicks?  There were a number of stations that had
> them in the recent JARTS Contest.
----------

First of all, there is no possible way for a rig running FSK to
overdrive or cause "key clicks", assuming of course the rig is not
faulty.

On the other hand, AFSK can and will and has been overdriven and overly
wide, and does produce the clicks.

Put another way. if your ALC is moving more than a fraction off 0,
you're overdriving the rig.

Unfortunately, very few rigs can generate AFSK power levels to what
would be seen on FSK.

73
Ed


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