[time-nuts] The home time-lab

[DaveH]

I have this set up in my radio room with ham radio equipment and my
thunderbolt. I got the same size battery as is in my truck so if that fails,
I have a drop-in replacement.

There is a company in the USA that manufactures a product called
BatteryTender - excellent float charger and maintainer. Costco sells them
for $40

http://www.costco.com/Battery-Tender-Power-Plus-3-Amp-Charger.product.100241
973.html

Dave

 

> -----Original Message-----
> From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf 
> Of Jeremy Nichols
> Sent: Thursday, July 07, 2016 18:12
> To: Bob Stewart; Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] The home time-lab
> 
> I recommend rigging up something to operate from storage 
> batteries for the
> rest, thus eliminating the power line temporarily.
> 
> Jeremy
> N6WFO
> 
> 
> On Thursday, July 7, 2016, Bob Stewart <bob at evoria.net> wrote:
> 
> > I hope this isn't too far off topic, as this is having a 
> big impact on my
> > testing.
> >
> > I decided to run an A/B test on one of my GPSDOs: comparing 
> the phase of
> > the two 10MHz output channels.  In the middle of the night, 
> there was a
> > long series of 35ns pops in the phase data.  Strangely 
> enough, there was
> > nothing in the data collected directly from the unit involved.  The
> > preceding two days we had had a number of switching 
> transients where the
> > lights blinked but nothing shut down.  So, putting one and 
> one together, I
> > suspect that a fair percentage of the strange results I've 
> been getting has
> > been power-grid related.
> > So, what to do?  I've been looking at UPS devices, and I don't even
> > understand enough to waste my money on a bad one.  The two 
> big questions
> > seem to be "on-line" and "sine wave".  Make that three: can 
> I trust the
> > mfgs claims?  Is there something affordable that could run 
> a pair of 5370s
> > and maybe another 50W worth of DUTs for up to an hour or 
> two and not be
> > prey to power-line transients?  Or would it be more cost 
> effective to
> > somehow monitor the power line for spikes or phase jumps 
> and blow off tests
> > or cut out the offending data?  From time to time we get a thread on
> > power-line nuts.  Should I have been paying more attention?
> >
> > Bob - AE6RV
> >
> >  
> --------------------------------------------------------------
> ---------------------
> > GFS GPSDO list:
> > groups.yahoo.com/neo/groups/GFS-GPSDOs/info
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