[AMPS] Meter Scale
John Fielding
johnf@futurenet.co.za
Mon, 12 Oct 1998 18:25:25 +0200
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Hi Mike - I made a new meter scale for a 432 MHz amplifier I built a
couple of years back. I carefully dismantled the meter and removed the
scale.
I had the scale photographed by a firm who do pcb artworks.
They made a 2:1 blow-up of the original in negative. I then placed a
layer of mylar semi-opaque drafting film over it and traced the original
arc and divisions. When I was satisfied with the results I drew in the arc
and divisions with a draughting pen and ruler and added the new scale
numbering using letraset. The 2:1 film was photographed and reduced to 1:1
and I had it printed on "polish paper". (This is a white photographic
paper which does not discolour like normal film positive does). The result
looks very professional, I even added my callsign to the bottom of the
scale. Finally I trimmed the paper to fit the original aluminium scale
and stuck it onto the reverse of the scale.
Hope this helps.
John ZS5JF
----------
> From: Mike Sims <nasfred@1bigred.com>
> To: amps@contesting.com
> Subject: [AMPS] Meter Scale
> Date: Sunday, October 11, 1998 2:42 AM
>
>
> Just finished a homebrew wattmeter and would like to make a non-linear
meter
> scale. Also, have an amplifier and would like to redo the meter scales
to
> directly display the measured values.
>
> Not interested in doing it free hand as when I do it they look like they
> were made with crayons using large lined paper.
>
> Can anyone describe how to make meter scales (faces) using programs that
are
> relatively available on the home computer? The term "relative available"
> means something like the MS products, Draw, Word Perfect, etc. I've
heard
> of making meter scales with various CAD packages. However, I don't have
> access to any of them.
>
> 73,
> Mike, K4GMH
>
>
> --
> FAQ on WWW: http://www.contesting.com/ampfaq.html
> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
> Search: http://www.contesting.com/km9p/search.htm
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<html><head></head><BODY bgcolor=3D"#FFFFFF"><p><font size=3D2 =
color=3D"#000000" face=3D"Arial">Hi Mike - I made a new meter =
scale for a 432 MHz amplifier I built a couple of years back. I =
carefully dismantled the meter and removed the scale.<br>I had the scale =
photographed by a firm who do pcb artworks. <br> They made a 2:1 blow-up =
of the original in negative. I then placed a layer of mylar =
semi-opaque drafting film over it and traced the original arc and =
divisions. When I was satisfied with the results I drew in the arc =
and divisions with a draughting pen and ruler and added the new scale =
numbering using letraset. The 2:1 film was photographed and =
reduced to 1:1 and I had it printed on "polish paper". =
(This is a white photographic paper which does not discolour like =
normal film positive does). The result looks very professional, I =
even added my callsign to the bottom of the scale. Finally I =
trimmed the paper to fit the original aluminium scale and stuck it =
onto the reverse of the scale.<br><br>Hope this =
helps.<br><br>John	ZS5JF<br><br>----------<br>> From: Mike Sims =
<<font color=3D"#0000FF"><u>nasfred@1bigred.com</u><font =
color=3D"#000000">><br>> To: <font =
color=3D"#0000FF"><u>amps@contesting.com</u><font =
color=3D"#000000"><br>> Subject: [AMPS] Meter Scale <br>> Date: =
Sunday, October 11, 1998 2:42 AM<br>> <br>> <br>> Just finished =
a homebrew wattmeter and would like to make a non-linear meter<br>> =
scale. Also, have an amplifier and would like to redo the meter =
scales to<br>> directly display the measured values.<br>> <br>> =
Not interested in doing it free hand as when I do it they look like =
they<br>> were made with crayons using large lined paper.<br>> =
<br>> Can anyone describe how to make meter scales (faces) using =
programs that are<br>> relatively available on the home computer? =
The term "relative available"<br>> means something =
like the MS products, Draw, Word Perfect, etc. I've heard<br>> =
of making meter scales with various CAD packages. However, I don't =
have<br>> access to any of them.<br>> <br>> =
73,<br>> =
Mike, K4GMH<br>> =
<br>> <br>> --<br>> FAQ on WWW: =
&=
nbsp; <font =
color=3D"#0000FF"><u>http://www.contesting.com/ampfaq.html</u><font =
color=3D"#000000"><br>> Submissions: =
&=
nbsp;<font color=3D"#0000FF"><u>amps@contesting.com</u><font =
color=3D"#000000"><br>> Administrative requests: <font =
color=3D"#0000FF"><u>amps-REQUEST@contesting.com</u><font =
color=3D"#000000"><br>> Problems: =
&=
nbsp; <font =
color=3D"#0000FF"><u>owner-amps@contesting.com</u><font =
color=3D"#000000"><br>> Search: =
&=
nbsp; <font =
color=3D"#0000FF"><u>http://www.contesting.com/km9p/search.htm</u><font =
color=3D"#000000"></p>
</font></font></font></font></font></font></font></font></font></font></f=
ont></font></font></font></font></body></html>
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--
FAQ on WWW: http://www.contesting.com/ampfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm