[Lowfer] Series for WA slant

Tue, 15 Jan 2002 10:54:24 -0500

Mitch and all,

I checked out the slant keying setup later last night and determined that
everything is correct. Therefore the slanted signal IS actually stronger
than the non-slanted signal! 

However, John A. (40mi distant) sent some captures that indicate the
opposite conclusion, except he resistively attenuated my signal 50db in
order get it down to a typical skywave level. Even though the signal at his
base is a steady one, with minimal fade, John and I agree that there is a
major problem with this approach: the normal received noise is also
attenuated by the same 50db. The AGC in ARGO (even the receiver AGC) would
therefore be rock stable and not dancing around as it typically does. I
suggested he attenuate the signal by detuning his loop and am waiting his
reply. At my end I can easily change the Vcc to the final from 24v to 5v and
thus cut the signal by at least that ratio.

Appreciate comments.

Bill WA   

Hi Bill:
Clips of the complete overnight series of your slant modulation are at:

http://technology.fanshawec.on.ca/tele354

The first full one shows the time ticks (60 secs) so can be used as ruler
for the others though approximations seem to work. Difficult to tell where
you switched loops - if that is what was happening.  Appears you actually
shut down at one time - it was so abrupt.
 Maybe conditions won't be so good tonight (grin) so can attempt another run
to compare flat vs slant..
I will use 60 second capture - allowing better comparisons.

73
Mitch VE3OT

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