[Boatanchors] National Crystal Calibrator for the HRO 50T1

[manualman at juno.com]

As far as I've been able to search, the company mentioned for the crystal
doesn't exist anymore unless it's now under some other name.

Pete, wa2cwa

On Mon, 20 Aug 2018 13:47:34 -0400 Howie WA3MCK <wa3mck at gmail.com>
writes:
> Hi Rob,
> Well put. Yes, excellent article. Considering an old Heath crystal
> calibrator commands $50 and up and don’t even ask about the plug 
> in
> calibrator for the HRO-60!
> Howie WA3MCK
> 
> 
> On Mon, Aug 20, 2018 at 05:55 Rob Atkinson <ranchorobbo at gmail.com> 
> wrote:
> 
> > This may not be of much help, but in the August issue of ER, 
> there's
> > an article on how to build and install a homebrew solid state xtal
> > calibrator that can be applied to any vintage set, plus a source 
> for
> > the 100 kc crystals.  It can be breadboarded, and runs off 12 v. 
> dc
> > and the article also tells how to make a small v. doubler power 
> supply
> > that runs off the 6 v. filament supply.  It's a pretty useful 
> article.
> >
> > 73
> > Rob
> > K5UJ
> > On Mon, Aug 20, 2018 at 12:16 AM Greg Gifford <cleophusa1 at att.net> 
> wrote:
> > >
> > >
> > >
> > > Hey Guys, anybody out there have a crystal calibrator for an HRO 
> 50T1
> > receiver? Thanks, Greg KG4MMY
> > >
> > ______________________________________________________________
> > Boatanchors mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Boatanchors at mailman.qth.net
> >
> > List Administrator: Gary Harmon, K5JWK
> > ** For Assistance: gharmon at idworld.net **
> >
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: 
> http://www.qsl.net/donate.html
> >
> -- 
> "Quis custodiet ipsos custodes?"
> ______________________________________________________________
> Boatanchors mailing list
> Home: http://mailman.qth.net/mailman/listinfo/boatanchors
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Boatanchors at mailman.qth.net
> 
> List Administrator: Gary Harmon, K5JWK
> ** For Assistance: gharmon at idworld.net **
> 
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html