[time-nuts] Meter face for HP-4805A

WB6BNQ wb6bnq at cox.net
Tue Oct 12 19:56:24 UTC 2010


It seems to me,

There was a program or two that someone (or more) had written to do meter scaling.  It was designed to print properly on an hp laserjet as I recall.

At the moment am unable to find it in my list of links or programs on my computer.  But Google should give some answers.

Bill....WB6BNQ


shalimr9 at gmail.com wrote:

> I have an HP-4508A Vector Voltmeter that has a bad case of meter paint peeling. I took pictures to have in case it gets worse (which it probably will), but I am concerned that any attempt at taking the meters apart (as I would need to actually scan the meter faces directly on the scanner to have a scale image without to much distortion) would result in most of what's left of the paint to fall off.
>
> This probably should go on the HP_Agilent news group, but I was wondering if someone in this group had experience with rebuilding those or similar meters.
>
> Didierr
>
> Sent from my Verizon Wireless BlackBerry
>
> -----Original Message-----
> From: paul swed <paulswedb at gmail.com>
> Sender: time-nuts-bounces at febo.com
> Date: Mon, 11 Oct 2010 20:22:32
> To: <billj at ieee.org>; Discussion of precise time and frequency measurement<time-nuts at febo.com>
> Reply-To: Discussion of precise time and frequency measurement
>         <time-nuts at febo.com>
> Subject: Re: [time-nuts] Possibly OT - Any interest in a vintage HP/Dymec
>  DY-5842 VLF receiver?
>
> Thanks Bill the scale is fine. Its the meter needle that had paint peeling
> off.
> Just pulled the meter and removed the loose paint. Also just scanned the
> meter face so in the crazy possibility of the decals peeling I can just
> print a new face.
> Now to locate a hobby store (that may actually be really tough these days.)
> and find some enamel paint of approx correct color.
> Kind of a florescent red and really a little dab will do you.
> Regards
> Paul.
>
> On Mon, Oct 11, 2010 at 11:22 AM, Bill Janssen <billj at ieee.org> wrote:
>
> > paul swed wrote:
> >
> >> An update. Indeed its working very well now. Easily at -88dbm. Its quite
> >> interesting in the fact that if you set the Local oscillator exactly at
> >> 160
> >> KC which today is easy to do, you actually have mis-adjusted it. It dawned
> >> on me this morning that since its a freq LO add and then subtract scheme.
> >> That you actually adjust it for peak signal through the 100KC IF.
> >> Essentially disregarding slight literal offsets. (This is the same
> >> approach
> >> some navy receivers use back in the 70s, and some older ham equipment.)
> >> The unit cleaned up very well though still have some tape glue to remove
> >> and
> >> label gunk from stickers.
> >> The biggest challenge is gently pulling the meter out and removing the
> >> peeling needle paint thats jamming the needle. No coffee during that
> >> exercise.
> >> Regards
> >> Paul.
> >>
> >>
> > I have had some success with putting the meter scale back down with water.
> > It seems on some meters
> > that the scale was a decal that had a water based glue. I used a tooth pick
> > to put a drop of water under
> > the part that was lifted and the used the tooth pick to smooth the scale
> > back in place.
> >
> > Bill K7NOM
> >
> >  On Mon, Oct 11, 2010 at 1:09 AM, Paul Davis <ziggy9 at pumpkinbrook.com>
> >> wrote:
> >>
> >>
> >>
> >>> In case anyone was wondering, the receiver has found a home with Paul,
> >>> WB8TSL. He tells me he's got it receiving WWVB already. It will need a
> >>> little TLC, but it was good to see its basic functionality confirmed.
> >>>
> >>> I've posted the scanned copy of the manual on my website at <
> >>> http://www.pumpkinbrook.com/DY-5842/> for those that are interested.
> >>>
> >>> Thanks for the interest, and the replies.
> >>>
> >>> Paul - K9MR
> >>>
> >>>
> >>> On Oct 2, 2010, at 2:40 PM, Pete Lancashire wrote:
> >>>
> >>>  Ken would be a great person. THe HP Memory project would be another
> >>>
> >>>
> >>>> http://www.hpmemory.org/index.htm
> >>>>
> >>>> -pete
> >>>>
> >>>> On Fri, Oct 1, 2010 at 3:50 PM, Brian Kirby <
> >>>> kilodelta4foxmike at gmail.com>
> >>>> wrote:
> >>>>
> >>>>
> >>>>
> >>>>> You might consider contacting Dr. Ken Kuhn  --  kennathakuhn at gmail.com
> >>>>>
> >>>>> check his HP museum at http://www.kennethkuhn.com/hpmuseum/
> >>>>>
> >>>>> Brian Kirby KD4FM
> >>>>>
> >>>>>
> >>>>>
> >>>>> On 10/1/2010 5:34 PM, ziggy9 wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>> Fellow time-nuts:
> >>>>>> I've got a circa 1964 DY-5842 VLF receiver. This is (was) operated in
> >>>>>> conjunction with an external time interval counter to make a frequency
> >>>>>> comparison. So you would select WWVL for example, and use that as your
> >>>>>> primary standard for comparison to your local standard. It's got 5
> >>>>>> crystals
> >>>>>> in it: 16, 18, 19.8, 20, and 60 kHz (listed as GBR, NBA, NPM, WWVL,
> >>>>>> WWVB).
> >>>>>> It works and I have the manual. The thing is, the interest in
> >>>>>> something
> >>>>>> like this is bound to be a bit narrow, so I thought I'd mention it
> >>>>>> here.
> >>>>>>
> >>>>>> So if there are any collectors, equipment museums, etc. that might be
> >>>>>> interested in this, please let me know. I'm a bit sentimental about
> >>>>>> this
> >>>>>> thing, it's sort of a bit of history, and from what I can tell,
> >>>>>> somewhat
> >>>>>> rare (doesnt make it worth anything though :). Since it's a bit of a
> >>>>>> curiosity, I'd like to pass it to someone that might be interested in
> >>>>>> it
> >>>>>> rather than just tossing it. I can always provide more details to
> >>>>>> anyone
> >>>>>> that wants them.
> >>>>>>
> >>>>>> Best regards,
> >>>>>> Paul Davis - K9MR
> >>>>>>
> >>>>>>
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