[Elecraft] JT65 requirements, and a possible external reference-locking option for the KX3

[Oliver Dröse]

Nice idea about how to fix it, Wayne. But how would this cure stability 
issues on 2 m then? ;-)

73, Olli - DH8BQA



----- Original Message ----- 
From: "Wayne Burdick" <n6kr at elecraft.com>
To: <w7gj at q.com>
Cc: "Elecraft" <elecraft at mailman.qth.net>
Sent: Tuesday, July 17, 2012 4:25 AM
Subject: [Elecraft] JT65 requirements,and a possible external 
reference-locking option for the KX3


> Lance Collister, W7GJ wrote:
>
>> No experience with the KX3 here yet, but this makes me wonder about
>> the frequency
>> stability on 6m with full throttle out on JT65A mode for 50 seconds
>> out of every
>> other minute, hour after hour....
>>
>> My K3 has always been rock solid.
>
> Hi Lance,
>
> The K3's oscillator subsystem is a factor of about 10 more expensive
> to manufacture than the one in the KX3. It also takes up about 100
> times more space, which is the real problem.
>
> But back to JT65. If it turns out the KX3's temperature compensation
> can't provide the stability you'd like, we could design an external 10-
> MHz locking module for it. This module would be called a "KX3EXREF" --
> the equivalent of the K3EXREF, which does the same job for the K3.
>
> The only drawback to such a module is that it would have to be
> installed in place of the planned 2-meter module. It would use the SMA
> connector as the 10-MHz input.
>
> Would this be of interest?
>
> 73,
> Wayne
> N6KR
>
>
>
>
>
>
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