[Elecraft] Diversity reception in the K3

[Vic Rosenthal 4X6GP/K2VCO]

Me too. Some people think it is primarily useful on low bands, but I use 
it on all the bands 40 thru 10 meters (which are the only ones I 
currently have antennas for).

I am using an R8 vertical for transmitting and one RX channel, and a 
Pixel Loop for the other channel. They are only about 25 feet (7.6 m) 
apart and are both vertically polarized, but there is definitely a 
diversity effect. I find that QSB is greatly reduced and CW copy is much 
better with diversity active. The only times I don't use it are when 
there is too much noise on the vertical or when I need the subreceiver 
for a pileup.

On 18 Jan 2015 20:48, Greg Miller wrote:
> 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


-- 
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/