[Lowfer] Icom R75 Frequency Jumps

Pat Bunn pbunn at matrixei.com
Fri Aug 9 07:53:02 EDT 2013


Todd 

I use a Thunderbolt for my station do I already have GPS . I  have seen the triplet that you use. I built several other designs but the signal from my test units were not as clean as I would have liked so I have not hooked it up,

Pat

Sent from my iPhone

On Aug 8, 2013, at 9:28 PM, <ToddRoberts2001 at aol.com> wrote:

> Pat, To lock my R75 to GPS I am using a DFS30 frequency 
> tripler kit sold by Dave, G4HUP.
> I have my DFS30 hooked up to the 10 mHz
> output of a Thunderbolt GPS receiver.The DFS30 triples the 10mHz  output 
> to substitute for the 30 mHz timebase in the R75.
> 
> You can learn more about the DFS30 kit here:
> 
> http://g4hup.com/DFS30/DFS30.html
> 
> The cost for the DFS30 kit is 27.50 GBP and Dave will accept  payment
> via PayPal. The kit uses surface mount components so one needs to
> be comfortable with soldering SMT if they would like to build their own  
> DFS30.
> 
> Most of the Thunderbolt GPS receivers are sold out on eBay now but  there
> are a few left in the $225 price range. I have heard of some hams using a 
> Jupiter GPS receiver but I am not familiar with that one. I believe the  
> Jupiter
> only has a 10kHz output that needs to be multiplied up to 10mHz.
> 
> 73 - Todd WD4NGG
> 
> 
> 
> In a message dated 8/8/2013 3:01:59 P.M. Eastern Daylight Time,  
> pbunn at matrixei.com writes:
> 
> Todd,
> 
> Did you use Jays circuit for GPS locking your R75?
> 
> Pat  Bunn
> N4LTA
> 
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