[R-390] Panel meters again

[Tom Frobase]

Having a large number of radio's without meters to restore, I have been in
the process of developing an OLD display using digital technology to
emulate the analog meters.

I have solicited one of my amateur radio college to replicate an existing
Dejur meter front bezel with room for the OLD display behind it.  He will
be printing the initial samples on his 3D printer.

 It will be powered of the pilot light, an Atmel AVR will be used for the
processing the A/D will be made to perfectly emulate the original S-meter.
The A/D is fast enough to directly sample the audio and display the VU
output.   I am thinking an option rather than the needle would be a bar
graph.  Not done yet but on its way ... tom, N3LLL

On Wed, Oct 29, 2014 at 10:31 AM, FISCH, MICHAEL <mfisch at kent.edu> wrote:

> You might want to try Rick Mish, radiomon at buckeye-access.com
> Mike
>
> -----Original Message-----
> From: R-390 [mailto:r-390-bounces at mailman.qth.net] On Behalf Of Barry
> Sent: Wednesday, October 29, 2014 11:17 AM
> To: Grayson Evans; R390A
> Subject: Re: [R-390] Panel meters again
>
> Of course, it would help if I had included the link... :(
>
> http://leedsradio.com/parts-meters.html
>
> Caveat: It appears Leeds is not open for business for a little while due
> to moving locations (see their homepage).
>
> Regards,
> Barry - N4BUQ
>
> ----- Original Message -----
> > From: "Barry" <n4buq at knology.net>
> > To: "Grayson Evans" <wa4gvm at gmail.com>, "R390A"
> > <r-390 at mailman.qth.net>
> > Sent: Wednesday, October 29, 2014 10:13:00 AM
> > Subject: Re: [R-390] Panel meters again
> >
> > I believe the meters listed on this page are a direct fit in the
> > panel.  I've ordered from Leeds before and they were exact fits;
> > however, I don't recall if they were the DeJur 112 (sold out) or the
> DeJur 131.
> >
> > Don't know if they ship overseas (if you need that).
> >
> > Regards,
> > Barry - N4BUQ
> >
> > ----- Original Message -----
> > > From: "Grayson Evans" <wa4gvm at gmail.com>
> > > To: "R390A" <r-390 at mailman.qth.net>
> > > Sent: Wednesday, October 29, 2014 4:05:54 AM
> > > Subject: [R-390] Panel meters again
> > >
> > > I am looking for replacement panel meters for my 390A.  Not
> > > original, but more modern meters that will fit the holes.
> > > I notice there have been very long threads on this subject many
> > > years ago (the thread I have is dated 1999, hundreds of posts),
> > > which really didn’t seem to resolve much except the specs for the
> meters.
> > > Wondering if anyone found a source they like lately.
> > > (the meters on the restoration I am working on are in pretty bad
> > > shape, but I am rebuilding them to keep as spares)
> > >
> > > I found this company that makes a great looking replacement for the
> > > line level meter, but I am not sure they are actually available:
> > > http://www.sifammeters.com
> > >
> > > ebay has a zillion sellers of various conventional analog meters,
> > > most very inexpensive, but didn’t see one I liked.  It is fairly
> > > easy to modify the meter for the correct scale, and put a new
> > > printed scale on it (done it many times), if I can figure out the
> > > actual range of the meter movement (for example a labeled 0-100V
> > > meter is probably a 0-1 ma meter movement with a scaling resistor
> > > inside the case).
> > >
> > >
> > > Grayson
> > > TA2ZGE - Ankara, Turkey
> > > KJ7UM
> > > Follow the Hollow-State Design Blog
> > > hollowstatedesign.tumblr.com
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > >
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