[Elecraft] Diversity reception in the K3

[Ian White]

The frequencies of the two receivers in the K3 are locked together for
diversity by sending identical instructions to the two identical
synthesizers which also share the same clock oscillator.

RF phase doesn't need to be coherent for diversity reception as
implemented in the K3, because the two signals are only combined at
audio frequency (usually between the operator's ears). There may be
small difference in time delay (group delay) through the roofing filters
in the two receivers but in practice this doesn't seem to be a problem.


73 from Ian GM3SEK


>-----Original Message-----
>From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of
>DaleJ
>Sent: 18 January 2015 09:28
>To: Elecraft at mailman.qth.net
>Subject: [Elecraft] Diversity reception in the K3
>
>Going beyond pushing a button, could someone explain how diversity
>reception is accomplished in the K3?  How are the two receivers locked
>together, phase coherently.
>
>Tnx 73
>Dale, K9VUJ
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