[Elecraft] Using K3 for 2m EME

[Edward R Cole]

Lance,

Very good!  On digital eme I found that freq stability is the more 
critical parameter vs freq accuracy.  WSJT (JT65) typically displays 
up to 2.5 KHz of spectrum so one can find signals that are off center 
frequency (on eme Doppler shift results in this as normal), but 
keeping on a given frequency without drift is important when eme is 
crowded or weak; choosing a 20-Hz sw decoder bw requires it.

Looks like the K144XV with
REFLOCK works.  Adding an external 10-MHz on the K3 will only succeed 
in bringing accuracy (I am 8-Hz accurate on 144-MHz with upward 
thermal drift of 5-Hz in my transverter xtal osc. during the initial 
20-30 min of transmission.  This keeps my total offset within 13-KHz.

Looks like another win for Elecraft's responsive customer 
"engineering" service.

I am hoping eventual duplication on 144 with the KX3.

73, Ed - KL7UW

Date: Wed, 10 Apr 2013 01:48:35 +0000
From: "Lance Collister, W7GJ" <w7gj at q.com>
To: Oliver Dr?se <droese at necg.de>,	Elecraft Mailing List
	<elecraft at mailman.qth.net>
Subject: Re: [Elecraft] Using K3 for 2m EME

Hallo Olli,

It worked GREAT!  I received ROCK SOLID stability reports from people 
I worked JT65B
mode today on 2m EME ;-)   It is tied to the high stability 
oscillator that is in the
K3, but I have no external reference.   I do have the KXV3A and the 
K144XV-F with
REFLOCK, and on the menu setting it says that it is locked onto that fort the
frequency.   I have not checked with people to see how close my 2m 
frequency seems to
be, but I think it must be pretty close, and the stability is 
obviously good.   Nice
to have the same stability now that I have been enjoying from the K3 
on 6m EME ;-)
GL and VY 73, Lance