[Elecraft] K3EXREF and Trimble Thunderbolts

[Bill]

I've got a more basic question than that. What are external, GPS synched  freq standards used for?
 
Do I need one for my K1 ??
 
Seriously, I haven't a clue.
 
73
Bill  K3UJ







-----Original Message-----
From: Julian, G4ILO <julian.g4ilo at gmail.com>
To: elecraft <elecraft at mailman.qth.net>
Sent: Tue, Apr 5, 2011 11:09 am
Subject: Re: [Elecraft] K3EXREF and Trimble Thunderbolts


What are the advantages / disadvantages of this type of frequency standard
ver the Efratom LPRO-101 which is a rubidium standard?
Julian, G4ILO