Fwd: [psk31] Hunting Really Weak Signals]
Wed, 17 Mar 1999 08:16:36 -0500
> << Subj: [psk31] Hunting Really Weak Signals
> Date: 16/03/99 01:44:46 GMT
> From: email@example.com (Philip G. Collier)
> Sender: firstname.lastname@example.org
> To: email@example.com
> Here's a tip for anyone interested in hunting really weak psk31 signals.
> I've noticed that the built-in waterfall is useful for displaying signals
> weak enough to be barely audible, but no weaker. PSK31sbw can decode
> weaker signals, however, and a more sensitive display is needed.
> Suddenly my idea light came on...The Windows program SPECTROGRAM works
> well for displaying super weak CW. Using a spectrum average of 4, I've
> been able to watch a 2700 kHz bandwidth and watch for the familiar double
> - line spectrum of psk31 signals. With a frequency marker traced on the
> waterfall, I simply tune my li'l ATS-909 to place the signal on the
> marker. When PSK31sbw is started, it is right on frequency...
> So, if you're hunting DX, just use a good scope to find your prey!
> Phil KG2DH