[Elecraft] K3EXREF Questions

[Paul Christensen]

> 1. Will the K3EXREF work straight from the output of an Efratom LPRO-101 
> or
> does it need a TTL square wave output or something else requiring extra
> circuitry between the LPRO and the K3?

A 10 MHz sine wave output from the Efratom is fine (+4 dBm to +16 dBm).

> 2. If the K3EXREF is installed, will the K3 still work as normal if the
> frequency standard is not turned on?

Yes.

Also, an asterisk (*) in the K3's menu will blink when K3EXREF recognizes a 
valid reference signal.

Paul,  W9AC