ARLA/CLUSTER: Nova versão do programa FSQPlot para detecção automática de longos ecos de transmissões

[João Costa > CT1FBF]

Long Delayed Echo detection automated

* Murray Greenman ZL1BPU* has announced the release of a new version of
FSQPlot, which now screens spots for Long Delayed Echoes.

These are much disputed and rarely observed unusual echoes of
transmissions, from unknown sources. They have observed on all bands, but
mostly on CW, but should be detectable using FSQCall soundings. The signal
delay is reportedly from two to 20 seconds.

FSQPlot is a helper program which operates with FSQCall, allowing the user
to see in a graphical manner what the signal-to-noise ratio has been for
specified stations on a 24 hour basis. It makes use of the FSQCall Heard
Log, and now, in addition to portraying activity, FSQPlot now screens the
log for all LDEs.

FSQCall is an amazing chat-style digital mode, popularly used as a way to
keep in touch with ham friends without them needing to be in the shack or
at the radio all the time. Messages are sent rather like text messages, in
simple sentences, but by HF radio rather than via phone.

FSQCall, in Directed Mode, records all verified receptions in a log, along
with their signal report.

As a result, it may also log echoes as close as about 6 sec from your own
transmissions, and even closer from other stations. Because LDE echoes can
be just a few seconds delayed, they are best detected on short
transmissions, such as FSQ soundings.

To participate in the world-wide search for LDEs, you need to first install
ZL2AFP FSQCall V0.32, and operate it in Selective Calling (Directed) mode
on one of the established calling frequencies. These frequencies are listed
on the Rules tab within the program. Set the sounding interval to 30
minutes, and Sounding ON.

Then install FSQPlot V0.06 (which generates a graph of activity on the
channel over 24 hours), and have it monitor the FSQCall Heardlog file.

The more stations we have actively sounding and listening, the greater the
chance of catching a real LDE.

LDE detection reports and questions regarding FSQCall and FSQPlot should be
directed to zl1bpu  gmail.com.

Download both programs mentioned above from
http://www.qsl.net/zl1bpu/MFSK/FSQweb.htm.
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