[Elecraft] K3EXREF and Trimble Thunderbolts

[Fred Jensen]

On 4/5/2011 10:06 AM, Leigh L. Klotz Jr WA5ZNU wrote:
>
> I've got a more basic question than that. What are external, GPS synched
> freq standards used for?

GPS relies on very accurate timing of it's signals.  Each satellite 
carries an atomic clock [Rubidium?] and the frequency of the satellite's 
various signals are thus extremely accurate and stable.  With 
appropriate equipment, they can be used to control a standard oscillator 
which in turn controls the TXCO in the K3 to the same accuracy.  The K2, 
K1, and KX1 have no such provision.
>
> Do I need one for my K1 ??

No.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2011 Cal QSO Party 1-2 Oct 2011
- www.cqp.org