[time-nuts] Possibly OT - Any interest in a vintageHP/DymecDY-5842 VLF receiver?

Tue Oct 12 20:12:00 UTC 2010

OK, found it

http://tonnesoftware.com/meter2.html

Bill....WB6BNQ

WB6BNQ wrote:

> 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
>
> paul swed wrote:
>
> > Boy do I agree with that.
> > If Diddier is reading this, wonder if we could add a meter scale to your
> > fine manual repository?
> > Regards
> >
> > On Tue, Oct 12, 2010 at 12:38 AM, Rex <rexa at sonic.net> wrote:
> >
> > >  The ability to easily do this kind of graphics stuff (scanning and
> > > printing) at an affordable price is one of the few recent innovations that I
> > > appreciate over the great design and longevity in older tech equipment. Meld
> > > the two =  win-win.
> > >
> > >
> > >
> > >
> > > On 10/11/2010 5:22 PM, paul swed wrote:
> > >
> > >> 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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