[Lowfer] 72.401 kHz...

JD listread at lwca.org
Sun Sep 8 01:57:35 EDT 2013


Hi Bob,

Saw a signal at your expected spot (attached) but can't confirm the ID.  Two 
big strikes against me here: the continuous S9 roar of static tonight, and 
the lack of QRSS45 as a mode in Argo.  I think all the QRN tonight dodged 
Jay H and came right down the 30 mS/m soil conductivity corrider from 
Montana and the Dakotas this evening...a very likely scenario, actually, at 
these frequencies.

I believe it really would have made a difference if you had been sending in 
QRSS60.  While 45 can be copied in 30 seconds slow or 60 seconds normal if 
the signal is good enough, it wasn't quite strong enough to detect in either 
of those modes.  At 60 seconds slow, the signal showed up, but the detection 
is not optimized for 45 second elements, so the matched filter concept 
wasn't helping.

I'll be watching again in the morning, from roughly 10 AM to 1 PM Central 
(11 A to 2 P Eastern), when there shouldn't be any skywave to worry about 
and storms should be minimal.

John D 
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