[Boatanchors] National Crystal Calibrator for the HRO 50T1

[McDonald, J Douglas]

Use my circuit:

http://www.antiqueradios.com/forums/viewtopic.php?t=312115

Xtal: $1.50 Mouser or Digikey

wiring on perfboard is just fine.

Doug McDonald

-----Original Message-----

Subject: Re: [Boatanchors] National Crystal Calibrator for the HRO 50T1

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