Re: [Elecraft] Dual Receiver Tricks

2019-06-27 Thread David Gilbert
I agree that Ed misused the term "polarity" at the end of his post, but I'm pretty sure it was a slip of the pen (keyboard) because he has been doing this stuff for a long time.  I'm pretty certain he meant "polarization".  I know he has done some work (and written about it) using cross

Re: [Elecraft] Dual Receiver Tricks

2019-06-26 Thread Jim Brown
Some words are being misunderstood and mis-used. Polarization describes the geometric orientation of the antenna and the resulting EM field. Polarity is the positive or negative going sense of voltage or current in a circuit (what for decades we mistakenly called "in phase/out of phase). 

Re: [Elecraft] Dual Receiver Tricks

2019-06-26 Thread Edward R Cole
Dave AB7E, I have been doing something similar with my K3 with subRx: I feed signals from two antenna that are orthogonally polarized (one is horz and other is Vert polarity, both pointed in the same direction and essentially in-phase). I use the eme sw MAP-65 to process the output of both Rx

Re: [Elecraft] Dual Receiver Tricks

2019-06-25 Thread Bob McGraw K4TAX
8:36:44 PM To: Bill Johnson; elecraft@mailman.qth.net Subject: Re: [Elecraft] Dual Receiver Tricks Not sure what you are describing. If you mean two antennas feeding two receivers at RF for diversity reception, yes ... that works well but is not the same thing at all. Your brain is doing

Re: [Elecraft] Dual Receiver Tricks

2019-06-25 Thread Bill Johnson
Johnson; elecraft@mailman.qth.net Subject: Re: [Elecraft] Dual Receiver Tricks Not sure what you are describing. If you mean two antennas feeding two receivers at RF for diversity reception, yes ... that works well but is not the same thing at all. Your brain is doing some spatial processing

Re: [Elecraft] Dual Receiver Tricks

2019-06-25 Thread David Gilbert
of David Gilbert *Sent:* Tuesday, June 25, 2019 7:07:55 PM *To:* elecraft@mailman.qth.net *Subject:* Re: [Elecraft] Dual Receiver Tricks Over the past few years I have twice requested Elecraft include something like that as a software modification, but nobody (either at Elecraft or here

Re: [Elecraft] Dual Receiver Tricks

2019-06-25 Thread Bill Johnson
-boun...@mailman.qth.net on behalf of David Gilbert Sent: Tuesday, June 25, 2019 7:07:55 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Dual Receiver Tricks Over the past few years I have twice requested Elecraft include something like that as a software modification, but nobody

Re: [Elecraft] Dual Receiver Tricks

2019-06-25 Thread David Gilbert
Over the past few years I have twice requested Elecraft include something like that as a software modification, but nobody (either at Elecraft or here on the list) seems interested in the least. Since phase is preserved during down conversion in a superhet circuit the software crunching

[Elecraft] Dual Receiver Tricks

2019-06-25 Thread Dick Dickinson
A late model SDR Receiver (only) is said to have a soon to be released software update. I've seen a demonstration whereby using 2 antennas and a computer device, the unit will be able (to some degree?) determine signal direction. Does Elecraft have plans to develop K4D software with such