[time-nuts] FS: 5370A

Bob Camp lists at rtty.us
Thu Jul 29 13:10:22 EDT 2010


Hi

Drift / failure of the three terminal regulators on the rear heat sink seems
to be an often reported issue.

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of paul swed
Sent: Thursday, July 29, 2010 1:02 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] FS: 5370A

Interesting so others found them a bit to warm also

On Thu, Jul 29, 2010 at 12:18 PM, Don Latham <djl at montana.com> wrote:

> Mine have extra heatsink clamped on with 1 inch c-clamps...
> Don
>
> paul swed
> > Interesting you were going to add a fan.
> > I have 4 5370s and measured the temps on that heat sink.
> > They were all the same pretty much, so figured HP knew what they were
> > doing.
> > But it really does feel pretty hot.
> > Pretty sure what I have picked them up for is not what you paid. Plus
> they
> > are heavy.
> > Good luck with finding a new home. They are a nice counter.
> >
> > On Thu, Jul 29, 2010 at 1:57 AM, Joseph Gray <jgray at zianet.com> wrote:
> >
> >> Ok guys, it has been sitting on my floor far too long and I don't know
> >> when I'll get around to working on it. When I last messed with it, I
> >> went through quite a few of the performance tests and IIRC, most
> >> passed. It measures frequency ok, but it's off a bit on TI
> >> measurements. I intended to open it up and get things up to spec, but
> >> never finished. It does have one intermittant BNC on the front panel
> >> that I haven't re-soldered yet.
> >>
> >> I'm not sure what the current prices are, but I know what I paid for
> >> it. How about $100 (less than I paid) plus shipping? Continental US
> >> only, please. I'll even throw in a fan that I was going to mount on
> >> the back heatsink.
> >>
> >> PM me. No need to clog up the list.
> >>
> >> Joe Gray
> >> W5JG
> >>
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>
> --
> "Neither the voice of authority nor the weight of reason and argument are
> as significant as experiment, for thence comes quiet to the mind."
> R. Bacon
>
>
> Dr. Don Latham AJ7LL
> Six Mile Systems LLP
> 17850 Six Mile Road
> POB 134
> Huson, MT, 59846
> VOX 406-626-4304
> www.lightningforensics.com
> www.sixmilesystems.com
>
>
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