Re: [time-nuts] suggestions for free samples from AD

2013-01-07 Thread Stewart Bryant

On 06/01/2013 01:51, bownes wrote:
 Mini-circuits and Hittite are the notable exceptions.

.. but Microcircuits do great giveaways (donation to charity)
at the Dayton Hamvention. Mostly this is past date code product,
but fine for homebrew.

Stewart


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Re: [time-nuts] Allan Deviation question

2012-07-06 Thread Stewart Bryant

... and running it to a sound card (oscillator gps disciplined)

How did you achieve this?

Thanks

Stewart


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Re: [time-nuts] Racal-Dana tactile switches

2012-04-21 Thread Stewart Bryant

I know its a hack but I used a small pcb switch and use
a sawn off knitting needle when I wish to press one
of those buttons.

It's a design fault and eventually all of them will
fail.

Stewart

On 21/04/2012 11:58, Chris Stake wrote:

Just a thought:
On some equipment, the push-buttons are formed by a rubber mat which is
shaped into domes with or without plastic buttons above.
If you sacrificed an old calculator it might be possible to cut the rubber
mat into individual buttons of a size suitable for refurbishing the Tokos
Chris Stake


-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Ulrich Bangert
Sent: 21 April 2012 11:18
To: Time nuts
Subject: [time-nuts] Racal-Dana tactile switches

Gentlemen,

I know I am not the only one in this group to have difficulties with
weak
tactile switches on Racal-Dana's 1991/2/6 range of counters. The other day
I
talked to the chief technician at Rosenkranz-Elektronik which is one of
the
biggest surplus suppliers in Germany.

He knew the problem very well and his claim was that an exact replacement
for the original Toko switches is no more produced anywhere in the world.
Which may be an explanation why none of us managed to find an exact
repelacement.

His second claim was that the switches can be repared: After removing the
cap gently grip the moving part with  a pair of pliers and twist it a
little
bit while pulling it out a bit at the same time. In this way the moving
part
can be removed without destruction of the switch. Then you find the source
of the problem inside: The weak and mostly destroyed rubber part inside.
Replace it with the rubber part of a switch which has NEARLY the same
dimensions. He told me that he had done such a repair for a number of
times.
Unfortunately he had no reference for the switches that he had used as the
source for the replacement rubber.

I am aware that this is only half of the solution of the problem but I
checked his suggestion with a original switch that I had laying around as
a
replacement and found that his description worked for me. I made a
photgraph
of the switch to be found here:

http://www.ulrich-bangert.de/Racal.JPG

and perhaps anyone of you has an idea where to get a similar one from. The
problem to find a similar switch is perhaps easier to solve than to locate
a
direct replacement. Note that the scale in the photo is in cm with
subdivisions in mm.

Best regards

Ulrich Bangert
www.ulrich-bangert.de
Ortholzer Weg 1
27243 Gross Ippener


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nuts
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Re: [time-nuts] Any spare switches for Racal-Dana 1992?

2012-02-21 Thread Stewart Bryant

On 20/02/2012 13:09, Charles P. Steinmetz wrote:

James wrote:


I need two of these black rubber pills


Speaking from extensive experience, if you need 2 now, plan on needing
somewhere between 5 and 31 more over the next year or two.

Best regards,

Charles



That is my experience.

I never managed to find any exact replacements here in England
so I ended up replacing the mechanism with some SMT switches
and using a probe to press them..

Stewart


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Re: [time-nuts] Subject: Listening to the List Owner

2011-09-21 Thread Stewart Bryant

On 21/09/2011 13:12, Mike S wrote:

At 07:43 AM 9/21/2011, Rob Kimberley wrote...

I appreciate the subtle humour here, but virtually all people I
communicate
with top post, and I've been using email since the early 90s. It is only
groups like this where it seems to be a problem. Maybe it is a
function of
the mail reader that is being used, (not sure on that one), but I
think you
will find that you are in the minority.


Microsoft (Exchange), RIM (Blackberry), and Google (Android), all make
it difficult-to-impossible to _not_ top post. But they're all clueless
net newbies, too.


If you look at the IETF lists (where you will find a high proportion
of clueful net oldies) you will see that top posting is at least
as common, if not more common, than bottom posting.

Stewart

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