[Boatanchors] 10 meters
Robert Nickels
ranickel at comcast.net
Wed Jun 5 16:40:44 EDT 2013
While it's a digital beacon mode that makes extensive use of digital
signal processing "gain" to pull signals out from beneath the noise
level, my recent success with WSPR (Weak Signal Propagation Reporter)
proves to me that the problem is much more one of "no operators" than
"no propagation". For example, my 10 milliwatt signal (generated by a
Raspberry Pi driving a logic gate) on 20 meters is routinely heard all
over North America and in Europe nearly every night. Best DX has been
Australia (14K km) and Wake Island. While I'll be the first to agree
that the DSP magic is the key, there had to be propagation for 10 mw to
be heard thousands of km away.
Automated reporting of signals heard makes it simple to prove that
propagation is available: See http://wsprnet.org for more info. Click
on "Map" and select 10, 15, or 17 meters to see what's been going on today.
73, Bob W9RAN
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