[time-nuts] Anyone have a working HP-113AR/BR Clock?

paul swed paulswedb at gmail.com
Fri Jan 5 21:28:10 EST 2018


Jeremy I will speculate the noise simply was tolerated. At the time these
would have been a pretty big to do.
It was top line HP after all. Most likely other fans in the divider chains,
receivers, scopes competed for attention.
But that was a bit before my time.
Regards
Paul
WB8TSL

On Fri, Jan 5, 2018 at 6:43 PM, Jeremy Nichols <jn6wfo at gmail.com> wrote:

> Thank you for the inputs. (I wonder what the original users of this thing
> did in 1960?) To quiet mine, I purchased a small rack cabinet enclosure,
> just big enough for a single 4U instrument, and mounted the 113AR inside
> with all the remaining space stuffed with Finerglas® house insulation. That
> has taken the edge off of the noise, making it almost tolerable. The next
> step is a layer of automotive sound system butyl rubber insulation on the
> 113AR cabinet and on the clock mechanism itself.
>
> Jeremy
>
>
> On Thu, Jan 4, 2018 at 6:10 AM Bob kb8tq <kb8tq at n1k.org> wrote:
>
> > Hi
> >
> > I would second the previous comment on the 113. Every time I have seen
> one
> > it
> > has been a really noisy device. Certainly *not* what you would want in
> > anything
> > described as a “quiet lab”. Since it’s full of gears (like a Teletype)
> > proper lubrication
> > and cleaning are going to be part of the process. The gotcha there will
> be
> > getting
> >  old lube out of odd places. I don’t ever remember anybody pointing to
> > there
> > unit and smiling …
> >
> > Bob
> >
> > > On Jan 4, 2018, at 1:15 AM, Jeremy Nichols <jn6wfo at gmail.com> wrote:
> > >
> > > I'd like to communicate with someone who has an HP-113AR/BR Frequency
> > Divider and Clock, especially someone who has one actually operating.
> Mine
> > seems to be noisy (motor/gear noise, not 1 KHz whine) and hard to start.
> > Having never seen one of these before getting mine, I have no idea
> whether
> > mine is normal or abnormal. It would be useful to communicate, via this
> > list or privately, with someone who has more experience. Mine is an "AR,"
> > serial 029-00156.
> > >
> > > Jeremy
> > >
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> --
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