[time-nuts] time-nuts Digest, Vol 177, Issue 29

[Jeremy Nichols]

That's what I do. My 105B came with the dead battery pack already removed.
Since I didn't plan on moving mine around, I installed it in a rack and
connected it to my UPS.


On Wed, Apr 24, 2019 at 3:29 PM Bob kb8tq <kb8tq at n1k.org> wrote:

> Hi
>
> My advice: Pull out the nicads and run the device on a normal UPS if you
> actually need
> power backup. When the UPS bites the dust … replace it. Much easier than
> keeping
> the batteries in these devices happy.
>
> Bob
>
> > On Apr 24, 2019, at 11:53 AM, Roy Thistle <roy.thistle at mail.utoronto.ca>
> wrote:
> >
> > Hi Time Nuts:
> >
> > I've been lurking for a while now... reading the posts.
> >
> > I have just got an HP 105B, which is in good shape, and has a
> new/replaced NiCad battery pack, and was calibrated against a rubidium
> oscillator (standard?).
> >
> > NiCads don't like me... does anyone have recommendations/commiserations,
> concerning their care.
> >
> > Best regards and wishes.
> >
> > Roy
> >
> > ________________________________
> > From: time-nuts <time-nuts-bounces at lists.febo.com> on behalf of
> time-nuts-request at lists.febo.com <time-nuts-request at lists.febo.com>
> > Sent: April 24, 2019 12:00:02 PM
> > To: time-nuts at lists.febo.com
> > Subject: time-nuts Digest, Vol 177, Issue 29
> >
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> >
> >
> > Today's Topics:
> >
> >   1. OSC value with Lady Heather (Giuseppe Marullo)
> >   2. Re: Z3801 Power Supply Schematic (RICHARD GOLDING)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Wed, 24 Apr 2019 08:51:44 +0200
> > From: Giuseppe Marullo <giuseppe at marullo.it>
> > To: time-nuts at lists.febo.com
> > Subject: [time-nuts] OSC value with Lady Heather
> > Message-ID: <0a87064f-23f6-926a-671c-ccefba0c09fc at marullo.it>
> > Content-Type: text/plain; charset=utf-8; format=flowed
> >
> > Is it possible to display the actual OSC value instead of ppt? I tried
> > /tx but surely I am doing something wrong.
> >
> > Yes, I am European, lol.
> >
> > TIA.
> >
> > Giuseppe Marullo
> > IW2JWW - JN45RQ
> >
> >
> >
> >
> >
> > ------------------------------
> >
> > Message: 2
> > Date: Wed, 24 Apr 2019 14:46:06 +0000 (UTC)
> > From: RICHARD GOLDING <rngolding at aol.com>
> > To: time-nuts at lists.febo.com
> > Subject: Re: [time-nuts] Z3801 Power Supply Schematic
> > Message-ID: <1237404332.3862013.1556117166643 at mail.yahoo.com>
> > Content-Type: text/plain; charset=UTF-8
> >
> > Many thanks to those who took the trouble to send me schematics of the
> Z3801a PSU.
> > I'm pleased to report that, using, the schematic, I was able to trace
> and fix the fault and that GPS lock led is glowing again.
> > The problem was a faulty regulator IC (U2 LM317) that had decided to
> produce 1.8V instead of 2.5V, which resulted in the PSU thinking that the
> input supply voltage was out of range.
> > It does seem a very complicated circuit for what could be
> straightforward voltage window comparator. i.e. 24R's, 8 Diodes, 3
> regulators, a comparator and logic IC + a handful of Mosfets!
> > Thanks again for those that helped.
> > 73 Richard, G3VZG
> > ? ??
> >
> > ------------------------------
> >
> > Subject: Digest Footer
> >
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> >
> > ------------------------------
> >
> > End of time-nuts Digest, Vol 177, Issue 29
> > ******************************************
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