[time-nuts] TNC connectors

David C. Partridge david.partridge at dsl.pipex.com
Tue Jun 23 07:10:17 EDT 2009


Norman,

PVC conduit sounds like a good solution.

I'm delighted to hear the frequency divider board is performing good
service.  I was rather surprised when there was insufficient interest to
justify getting a further batch of boards made up.

I'm pretty sure it would out-perform any micro based solution (no disrespect
to the TAPR board intended) in terms of jitter etc. especially if you used
thin film resistors instead of thick film in the clock circuit, but don't
have the test equipment to measure that.

I wonder if anyone did get round to measuring how good or bad it was - I did
try (with a lot of help from Bruce) to design it to minimise that sort of
problem.

Dave  

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Norman J McSweyn
Sent: 23 June 2009 11:54
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] TNC connectors

David,
I used a piece of pvc conduit to mount the antenna. It fits in the vic-100's
mounting skirt. If it does not have a mounting skirt, perhaps use a flange
and drill the appropriate holes, apply RTV (or your favorite sealant!).
Norm
(The divider board is working like a charm!! Even impressed the heck out of
my new GF!!! GEEEEKKKKKK!!!)

David C. Partridge wrote:
> Hi Dave,
> 
> The Solartron 7081 is very happy and so am I :-).  Thanks yet again 
> for all your help.
> 
> Re: different sized centre pins - I know that's true of "N" type 
> connectors,
> - you really don't want to push an N type male 50R into  an N type female
> 75R connector.   However I'm pretty sure that it doesn't apply to BNC -
just
> wasn't sure about TNC.
> 
> Dave
> 
> 
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