[Elecraft] Older option boards from K3 upgrade

[Don Wilhelm]

Wes,

I know of no A/B comparisons, but the Sherwood chart shows a significant 
improvement - he has rankings for the K3 with and without the new 
synthesizer.

The lower phase noise may be apparent to you when picking a station out 
of a pileup or on a contest weekend with many close-in signals.

The transmitted phase noise is also reduced, so your ham neighbors might 
notice a difference in the width of your transmitted signal.

73,
Don W3FPR

On 4/25/2017 4:33 PM, Wes Stewart wrote:
> I've seen these rave reviews about the new synthesizer many times.  Has 
> anyone actually done an A/B comparison in real time with two otherwise 
> identical radios.
> 
> I have a K3 with the original synthesizer (the actual one used to 
> develop the stiffener plate) and a K3S.  I have not run them 
> side-by-side since I don't have any test equipment with sufficiently low 
> phase noise to use.  Anecdotally, using them one at a time in day-to-day 
> operation, I haven't noticed a difference.
> 
> Wes  N7WS