[Elecraft] KX3-2M module?

[David Anderson]

Dave,

My interest in the KX3-2M has almost entirely gone after this news about the frequency stability, and there is no way to lock it to another high stability standard. I have already completed the extended VFO temperature compensation procedure. I suspect that I will either rebuild my own 28 to 144 MHz transverter which was stable enough or purchase a more modern high performance transverter such as the HA1YA unit for driving my SSPA for 144 MHz EME and terrestrial DX, which only needs a few watts of drive. 

I am interested in the PX3 however :-)

73

David Anderson GM4JJJ


> On 7 Apr 2014, at 19:07, "Dave" <dave at g0dja.co.uk> wrote:
> 
> I'm hoping to use it with a 24GHz transverter, so I guess I'll be embarking on the extended VFO temperature compensation procedure at sometime after deciding on whether to purhase the KX3-2M unit.
> 
> However, the more I hear and read about the KX3-2M, the more I'm thinking that it's not going to be good enough.  I enjoy using CW on 2M and most of the contacts on 24GHz will probably be CW as well, but my transverter is not GPS locked, so the combination may not work too well.
> 
> Dave (G0DJA)
> 
> ----- Original Message ----- Cc: "Elecraft Mailing List" <elecraft at mailman.qth.net>
> Sent: Monday, April 07, 2014 4:37 PM
> Subject: Re: [Elecraft] KX3-2M module?
> 
> 
>> - The module is unlikely to support very narrowband modes, because short-term local oscillator excursions at the I.F. (48 MHz) are, in effect, multiplied by about 3. FM and AM modes can be used with normal factory temperature compensation on 2 m. To use CW/SSB, the extended VFO temperature compensation procedure will be required. This level of compensation would also allow the use of narrow-shift RTTY. But JT65 and similar modes on 2 meters would probably require tighter frequency stability.
> 
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