[Elecraft] 2 meter EME considerations with the K3

[Sebastian, W4AS]

I don’t believe the external transverter’s frequency stability is any better if the K3 has the TCXO option.  

I owned an XV144 without the optional TCXO option which I attempted to use with meteor scatter, and was very frustrated by its constant frequency drift.  After I installed the TCXO in the transverter, the frequency was slightly more stable, but still not useful enough for my purpose.

Elecraft told me their external transverters are an older design which they admit do not maintain the frequency stability necessary for the JT modes.

73 de Sebastian, W4AS



On Mar 27, 2014, at 12:30 AM, John Lawrence <j123law at aol.com> wrote:

> The K3 with it's internal transverter and new external 10 MHz reference option make staying within 2 or 3 Hz possible. The external reference stabilizes both the K3 and the K3's internal transverter LO.  Where as, the separate XV144 with it's own TCXO option for the LO make it possible to stay within 10 Hz or so if the K3 has its own TCXO option.  With the XV144, temperature change during continuous 10 watt output on J65 it will cause some drift with dissipation heat