I have two Powerex MH-808M for sixteen cells.
I have two 105B and I have modified them with a custom connector and
holder so that I can remove the cells and charge them in the 808, then
put them back, disconnecting the trickle charger.
Ian
--
___
On 09/02/2017 02:57 PM, Clay Autery wrote:
> Having decision-making problems for the materials for my GPS main
> feedline. Going to use a TM LMR stock, just can't decide how big to go
> with it...
I have a modest 26dB antenna on a six feet pole of plastic piping, the piping
is
strapped to my
On 11/05/2016 03:12 PM, Tom Van Baak wrote:
> Having not done SMT before, how should I do it with minimal risk to the very
> precious PCB. Or, what equipment should I use this as a good excuse to buy?
Tom, I used the obvious but never read about using two soldering irons,
invented it
going to the emergency place
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On 08/13/2016 12:39 AM, Chuck Harris wrote:
> A fairly large part of the population gets along just
> fine with mono vision. Many choose it specifically
> by getting contact lenses where one lens is near, and
> one is far, or getting laser eye surgery to affect that
> condition.
>
> That said, I
On 08/05/2016 01:45 PM, Bob Camp wrote:
A ten foot long antenna cable is no more or less an issue indoors than a ten
foot serial cable
to a laptop or a ten foot test lead running off of a DVM. They all will pick up
a spike if the field
is strong enough. If you are in a high risk location,
On 06/04/2016 08:24 AM, Bob Camp wrote:
Not accurate, but at least a hand waving sort of number:
Bob,
It serves a crystal calibrator marker on each 100 kHz of a
ten inch dial 600 kHz wide. It is good enough for the job,
but not really in the time-nuts realm, except for the accuracy
It looks like the quartz is in the sealed glass "valve", or "tube".
I have removed a similar glass vacuum enclosed 100 kHz frequency
marker generator from my Eddystone EA12 receiver that I bought from
Tom Roberts, G3YTO (SK 1985), in September 1978. I don't use the EA12
any more and I wonder
WIRED says that "tidying up" broke some links.
Step Inside America’s Time Lab
http://www.wired.com/2008/01/gallery-time-nist/
The NIST-F1 is the U.S. national standard clock, and the most accurate
clock in practical use. The F1 would take more then 60 million years to
slide off by a second.
On 03/25/2016 05:55 PM, Bruce Griffiths wrote:
As long as BNC connectors are avoided as their phase shift isnt that stable.. A
small mechanical disturbance will change it significantly. Actually low noise
PN measurement systems can be very sensitive to cable movement. Bolting modules
to a
On 03/23/2016 01:23 AM, time...@metachaos.net wrote:
I have another question about test equipment. When using a spectrum analyzer
to examine the output of a frequency standard, what are the minimum
specification needed? Bandwidth, resolution, sensitivity, etc?
Spectrum analysers are not
On 02/02/2016 03:24 PM, Don Latham wrote:
You have it right, iovane. At the least, they should be protected from light,
thermal radiation, and emf. Won'drous things will happen if the crystal and
its structure are subjected to radiation through the glass. I'd suggest a foam
wrap in a tin can
On 01/10/2016 01:25 PM, Nathan Johnson wrote:
Pretty sure this is where I want to go. I'm looking at Item#
231803015799 on the
usual auction site, and this seems to be everything I need? I also
looked at
item# 111514491254
Nathan,
I have an NTBW50AA. It can be monitored and controlled by
On 12/05/2015 03:28 PM, Bert Kehren via time-nuts wrote:
have to splice RG 6U. Has any one done measurements on couplings and the
loss associated with them.
My GPS aerial came with the Nortel box from the auction site.
It is connected to my RFTG-u Ref 1 using RG-6. It has standard
F video
On 12/02/2015 04:38 PM, Attila Kinali wrote:
> If it's QFN, don't bother soldering them by hand. The only viable way
> to solder these beasts are either in an oven or using a fine hot air gun
> (like the Leister Hot Jet S with a 5mm nozzle). I have not seen anyone
> being able to reliably solder
On 08/16/2015 08:39 PM, Bob Camp wrote:
The “wear out” on a Rb is not the same as wear out on a
Cesium standard. In a Cs, you have a finite number if atoms
loaded in at the factory. When those atoms all travel down the
tube, it’s dead. In an Rb, the atoms don’t go anywhere. There is
no
On 08/18/2015 05:33 PM, Hal Murray wrote:
Google works pretty well. Just add time-nuts to your search string. If
that gets too much duplication from sites that clone the list, add something
like site:febo.com
Thank you Tom and others in this thread.
I was considering posting something
On 08/06/2015 07:27 PM, Edesio Costa e Silva wrote:
Had anyone managed to run the KS-24361 REF-0, the one without GPS, as a
standalone unit? If so, can you provide some links on how to configure it?
I have two REF-0 units spare: at $25, the Milliren OCXOs are treasures.
I am configuring them
I bought several of these, 19.5 V 4.75A power supplies from user
shunwei2014 on the auction site.
http://www.ebay.com/itm/201159335516?_trksid=p2057872.m2749.l2649ssPageName=STRK%3AMEBIDX%3AIT
I have no association other than being a customer.
One of these power supplies freed my lab power
On 07/05/2015 01:52 AM, skipp Isaham via time-nuts wrote:
re: Nortel Trimble NTBW50AA GPSTM 10MHz Oscillator GPSDO
Skipp,
I have one of those.
The supplied antenna is outside connected using RG59, high quality
coax but presumably a 1.4 SWR, which is fine.
Lady Heather is working showing the
On 06/08/2015 01:11 PM, Bert, VE2ZAZ wrote:
I just want to let those who are curious about disciplining a mechanical
pendulum
Hello Bert,
It is good seeing this in motion.
I have had this project in mind since I read the article in Scientific
American,
A Venerable Clock Is Made Highly
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