[Elecraft] Diversity Mode - DATA-A

Edward R. Cole kl7uw at acsalaska.net
Thu Jun 16 14:49:52 EDT 2011


I haven't read W8JI article, but if you are looking to process 
diversity data streams from two receivers, you might look at using 
Linrad.  I am working on a project that uses the diversity function 
of the K3 with aux-Rx to process two signals that are opposite 
polarity in order to automatically align the receiver with the angle 
of polarization.  The heavy lifting is done by Linrad.  You can 
follow my progress at:
http://www.kl7uw.com/LINRAD.htm

73, Ed - KL7UW

-----------------------------

Message: 33
Date: Wed, 15 Jun 2011 20:26:57 -0700 (PDT)
From: vk4cmv <vk4cmv at gmail.com>
Subject: Re: [Elecraft] Diversity Mode - DATA-A
To: elecraft at mailman.qth.net
Message-ID: <1308194817325-6481616.post at n2.nabble.com>
Content-Type: text/plain; charset=us-ascii

Hi Joe et al -

I've read the very informative notes from W8JI
http://www.w8ji.com/polarization_and_diversity.htm - and the previous
lengthy & sometimes heated thread of posts on this forum. Very interesting.

In the end of the day, it looks like some kind of voting system would be
required to take the 'good bits' from each stream of data (antenna).

At least with a mode like JT65a there is some hope of building that into the
software - there's even two decoders built in, if the signal fails on the B
decoder, the K decoder is tried - which is a voting system of sorts.

I think the relevant bit  of Joe Taylor's code is written in FORTRAN - so
I'd better go and brush up on COMPLEX*16 variables.

73 Julian




73, Ed - KL7UW, WD2XSH/45
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