In a message dated 1/28/2007 2:16:17 P.M. Eastern Standard Time,
wqmeeker@iastate.edu writes:
2. If my rise/fall times are set a 5 ms, and the wave form shape has
the right shape on my scope, could I still be creating objectionable clicks?
Yes, if you are overdriving your amplifier. There is an article on eHam
right now about this issue. "ALC Keying and Other Amplifier Problems." I
don't
believe the Orion has an ALC overshoot issue but maybe someone else can
comment on that.
Other folks have documented the inaccurate settings recommended a rise time
of as high as 8ms.
3. What other things should I do to check for the clicks?
Have your friend listen with and without the amp. See if someone further
away can listen
4. In the Orion II manual (October 2006 version) on page 31 is says
that "For external keying the rise fall times available are 3ms to
5ms regardless of the keyer speed." I can adjust between 3 and 10, so
I suppose that this is a typo?
Yes, the key phrase is "regardless of keyer speed." If you set the rise
above 5 ms you will see a message that says "Max 40WPM External keying." At
least it does in the Orion - check and see if yours doesn't give this warning.
I don't think this changed in the O2.
k4ia
Craig "Buck"
Fredericksburg, Virginia USA
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