[ARC5] Link frequency meter

[Mike Everette]

If you have access to OLD Fair Radio Sales catalogs you will find these things listed during the first half of the sixties.  There were at least two military versions, each for a different frequency range.  The nomenclature of the second one may be BC-439; not sure.  Somewhere I have a stash of old Fair catalogs and if I can find them, will look it up.

A few years ago I came across such a unit, set up for the 42 mc band.  It ended up getting stripped for parts, mainly the power supply -- as someone mentioned, it works great for a BC-221 -- and that fabulous dial assembly.

73

Mike
W4DSE

--- On Fri, 1/11/13, Christopher Bowne <aj1g at sbcglobal.net> wrote:

> From: Christopher Bowne <aj1g at sbcglobal.net>
> Subject: Re: [ARC5] Link frequency meter
> To: "Ray Chase" <raydio862 at verizon.net>, WA5CAB at cs.com, arc5 at mailman.qth.net
> Date: Friday, January 11, 2013, 7:52 AM
> Ray - would be interested in knowing
> the details of the Camp Evans meter - xtal 
> frequency and what the cal chart looks like.  The
> crystal in mine is 4.8875 Mc - 
> 39.1 Mc is the 8th harmonic.  The size of the cap and
> coil on the unit variable 
> osc look like they are indeed working around 39 Mc.
> 
> 
> 
> 
> ________________________________
> From: Ray Chase <raydio862 at verizon.net>
> To: Christopher Bowne <aj1g at sbcglobal.net>;
> WA5CAB at cs.com; arc5 at mailman.qth.net
> Sent: Thu, January 10, 2013 9:00:19 AM
> Subject: Re: [ARC5] Link frequency meter
> 
> The frequency of the SCR-268 radar was set at about 205 Mhz.
> and shifting the 
> frequency of its 16 tube ring oscillator was not a task for
> the faint hearted.  
> The Army's first radar and decidedly crude by late WWII
> standards, non-the-less 
> saw yeoman service in both the European and Pacific theaters
> of action.  We have 
> one of those pieces of test equipment in our museum at Camp
> Evens and solicit 
> leads to any other pieces of that venerable radar.
> Ray  www.infoage.org
> 
> ----- Original Message ----- From: "Christopher Bowne"
> <aj1g at sbcglobal.net>
> To: <WA5CAB at cs.com>;
> <arc5 at mailman.qth.net>
> Sent: Thursday, January 10, 2013 7:20 AM
> Subject: Re: [ARC5] Link frequency meter
> 
> 
> > Thanks Robert.  Yep - that appears to be the same
> unit, perhaps the chart
> > provided in the "de-mil" version was changed from the
> original one, or there
> > were several versions to work different frequency
> ranges.  I suspect that the
> > one I have was dumped as a de-mil version after the war
> with a commercial name
> > tag. The fifth harmonic of 39.1 Mc  (195.5 Mc)
> noted on my cal chart is at the
> > low end of the frequency range quoted for the BC-438.
> Will have to put its
> > variable output into my HP counter to see where its
> actually making its RF.
> > Interesting that it is a piece of test gear for one of
> the very early radar
> > systems.  The length of the little whip antenna
> appears to be close to a 
> >quarter
> > wave at 195-215 Mc.
> > 
> > 
> > 
> > 
> > 
> > ________________________________
> > From: "WA5CAB at cs.com"
> <WA5CAB at cs.com>
> > To: arc5 at mailman.qth.net
> > Sent: Wed, January 9, 2013 3:12:58 PM
> > Subject: Re: [ARC5] Link frequency meter
> > 
> > BC-438 was built for SCR-268 and covers 194-216
> MC.  I had one once but
> > sold it to a radar collector.
> > 
> > In a message dated 01/09/2013 13:19:59 PM Central
> Standard Time,
> > elden_meyer at yahoo.com
> writes:
> >> These are similar in principle to the BC-221 et
> al.
> >> 
> >> At least one version was made for the military,
> with a different frequency
> >> range,
> >> as the BC-438. There is a very brief description
> and schematic in the CQ
> >> Surplus Schematics Handbook (on the Web various
> places). The diagram
> >> should be similar for all models.
> > 
> > Robert Downs - Houston
> > wa5cab dot com (Web Store)
> > MVPA 9480
> >
> ______________________________________________________________
> > ARC5 mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/arc5
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:ARC5 at mailman.qth.net
> > 
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> >
> ______________________________________________________________
> > ARC5 mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/arc5
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:ARC5 at mailman.qth.net
> > 
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html 
> ______________________________________________________________
> ARC5 mailing list
> Home: http://mailman.qth.net/mailman/listinfo/arc5
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:ARC5 at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>