Hi Chris:
For me the best way to see what propagation is doing is with some from of chirp
receiver.
With the RCS-5 you get a plot of the height of the various layers in real time along with a signal quality metric for
the path between you and the target chirp transmitter.
There are a number of other ways to get this data that do not involve a
commercial chirp receiver.
http://www.prc68.com/I/RCS-5A.shtml
Since chirp transmissions cover 2 to 30 MHz you don't choose the transmitter based on frequency, rather you use it's
start time.
That's best done using a GPS timing receiver for synchronization. There's a way to do that using a computer sound card
where the GPS 1PPS goes into one channel and the audio from a (hopefully programmable) HF receiver into the other channel.
In some cases you can see a signal that's been all the way around the Earth one
or more times.
I think this is also a great way to evaluate a receive antenna.
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
Chris Albertson wrote:
It's on my list of things to do. I'm more interested in tracking the delay
as a way to study radio propagation.
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