[Elecraft] New Synth Question...

[David Cole]

Hi Robert,

I suspect that the changes are too small to make any difference to
digital modes, even the really narrow bandwidth ones, like JT9.  

The sawtooth I am seeing is on the order of 1/4 to 1/8 Hz.  I would be
very interested to hear what one of the folks that do FMTs have to say
regarding this issue.

I suspect from other Emails I have gotten off list, that nothing will
make them go away, no matter what, even using an external GPS reference.


-- 
Thanks and 73's,
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On Thu, 2015-04-23 at 22:47 -0500, Robert Wood wrote:
> Eric,   to ask the question differently:
> when the ARRL FMT comes in Nov, want to change back to the original KSYN3
> for that day -> will the K3 operate???
> 
> nk7z asks about more accurate, for FMT,  important to be stable, repeatable
> - using SpecLab a known error can be corrected out but has to be the same
> error when measuring against known standard and doing the FMT.... (we're
> splitting hz here, hi)
> 
> serious recommendation:  next FMT do a K3 party, K3 owners enter & display
> results.   A K3 with SpecLab - new KSYN3 or old - on 40/80 should be within
> one hz
> 
> on digital modes such as RTTY - when the KSYN3a new board makes correction
> or "step change"
> wonder how that affects the decoders
> someone would have to test that in lab, same test done to test software
> (like 2tone) old board then new board using same recording & decoder
> settings....
> 
> 
> 73 Robert W5AJ
> SMIEEE
> 
> 
> 
> 
> -----Original Message-----
> From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Eric
> Swartz - WA6HHQ, Elecraft
> Sent: Thursday, April 23, 2015 7:41 PM
> To: dave at nk7z.net
> Cc: Elecraft Reflector
> Subject: Re: [Elecraft] New Synth Question...
> 
> Hi David,
> 
> This is fundamental to the operation of the KSYN3a, regardless of reference
> source.
> 
> 73,
> 
> Eric
> elecraft.com
> 
> On 4/23/2015 7:37 AM, David Cole wrote:
> > Hi,
> >
> > Thanks for the response Eric, is there a way to get around that?
> >
> > It sounds like no matter what I feed as a reference, I may have that 
> > at all times, as the synthesizer locks to whatever reference I use?
> >
> > Is my assumption correct?
> >
> > I ask because if getting the higher accuracy reference would help, 
> > I'll get it.
> >
> 
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