Dave,
Using Diversity Receive, the human brain does that automatically (but
not with the numbers). You can sort out both signals and automatically
pick the best one or a blend of the two. This is an unconscious process.
The name of the game is communications, not looking at numbers
representing the two signals or the difference between them.
To analyze and display the differences may be useful in a lab setting,
but not of much use for quickly picking the best path for a QSO.
Just my opinion.
73,
Don W3FPR
On 1/12/2019 5:06 PM, David Gilbert wrote:
I know Wayne requested direct replies to his query and I've already done
that, but I have a serious suggestion and I'm curious if others here
would be interested. Here it is:
===
The two receivers in a K3 or K3s can be phase locked for diversity
reception, and the new synths preserve that phase lock even with a
change in frequency. Since the relative phase of an incoming signal
presented to the two receivers is preserved during down conversion, it
is possible to capture that phase difference even in the audio chain.
Once that phase difference is known, it should be possible to:
1. Display the difference. This would allow a user to put up two
vertical sense antennas to determine the azimuth of an incoming signal
(albeit with a potential mirror image uncertainty). Or put up two
horizontal sense antennas to display the arrival angle of an incoming
signal.
2. Better yet, it should be possible to adjust the relative phase and
amplitude of an incoming signal from the two antennas, then either add
them or subtract one from the other to either peak a desired signal or
null an interfering signal (including a source of noise, man made or
atmospheric).
===
There are commercially available pieces of hardware from various ham
suppliers that perform this same function except at RF (which is more
difficult), and they cost several hundreds of dollars. It seems to me
that any K3s, or K3 with the new synths, should be able to do the same
thing virtually for free.
73,
Dave AB7E
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