[Elecraft] Diversity reception in the K3

[Greg Miller]

I use diversity receive quite a bit. It was actually the main thing that got me looking at a K3 in the first place…great feature.

-Greg NY6C

> On Jan 18, 2015, at 5:48 AM, Ian White <gm3sek at ifwtech.co.uk> wrote:
> 
> 
> 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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