[Elecraft] K3 Transverter / 2m unit

[David Pratt]

Adriana & Lexa -
I have both the external XV144 and the internal K144XV.  While they both 
have their advantages and disadvantages it all depends on what you want 
to use them for.

For frequency stability the XV144 (with crystal oven) is far superior 
although Elecraft are currently doing some work towards reducing the 
drift in the K144XV. The internal transverter is fine for FM but I am 
finding the frequency drift of mine is unacceptable for CW or SSB unless 
your overs are very short.

I understand that Elecraft are planning to provide a facility to lock 
the oscillator of the K144XV to that of the K3 which will cure the drift 
problem.

To sum up, as things are at present, it's the XV144 for performance but 
the K144XV for convenience.

73 de David G4DMP

In a recent message, Alexandr Kobranov <kobranov at amoscz.cz> writes
>
>As I am now to decide to buy K144XV or stay with some external -  let
>me ask here:
>
>What is thermal stability of internal 116/118MHz Xtal osc?
>I mean some experience with JT data mode in EME or similar. Is there
>some drift on 144MHz signal (during longer TX period) and how much if any?
>
>Thanks for any practical experience,