[Elecraft] Synchronized and stable GPS phase lock for KX3, K3 and XV transverters

[David Anderson]

A couple of ham designs, which you can buy, not cheap, but good quality.

http://rudius.net/oz2m/ngnb/gps.htm

http://www.jrmiller.demon.co.uk/projects/ministd/frqstd.htm

Some more ideas:

http://www.g4jnt.com/freqlock.htm

73

David Anderson GM4JJJ 

> On 21 Aug 2014, at 13:50, Slava Baytalskiy <slavka at nullserv.com> wrote:
> 
> Count me in!
> Ever since i got that REF board - i've been looking for that elusive Trimble unit.
> People had told me that eBay is full of them for like $70.
> Yeah, right! Maybe 10 years ago...
> Now, they're about $200-300 depending on power supply availability, and you can't even find them...
> So, yeah, i want this board to work!
> __________________
> Slava (Sal) B, W2RMS
> W2RMS at arrl.net
> 
>> On Aug 20, 2014, at 8:48 AM, John Lawrence via Elecraft <elecraft at mailman.qth.net> wrote:
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> Bob
>> The Trimble Thunderbolt is scarce on the used market and when they appear the price is painful.  They were designed and manufactured for the BB wireless and cellular market when the industry switched from analog to digital synchronized cell sites.  I was part of that out business.  
>> 
>> 
>> We need a compatible module that will work with the Elecraft products.  Today there are chips that reduce to complexity and price that would make it possible to have a product that will reach the Elecraft user base of customers.  
>> 
>> 
>> John, W1QS
>> 
>> 
>> 
>> Not that I had a "need" but I did instal the K3EXREF with a Trimble Thunderbolt 
>> GPSDO. So I have the 10MHZ reference available.
>> 
>> I also have no present "need" for the XV144 & XV432 to be locked to that 
>> external reference. However were a kit available to do it I would purchase the 
>> kit/accessory to do so.
>> 
>> i would like to see it as a product.
>> 
>> 73,
>> Bob
>> K2TK  ex KN2TKR (1956) & K2TKR
>> 
>> 
>> 
>> 
>> 
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> 
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