[Test-Equipment] Old GR Crystal Test Set

[J. Forster]

Thanks very much,
-John

Dale H. Cook wrote:

> At 02:32 AM 10/3/2004, J. Forster wrote:
>
> >I have an ancient General Radio Type 275 Piezo -Electric Oscillator.  It's an
> >instrument with a one tube
> >circuit that ran on batteries in a wooded box about a foot square.  I  would
> >like to find a manual or at least the part number (tube number) of  the 4 pin
> >vacuum tube that went into it.
>
> It is listed in Catalog F (June, 1930). The tube is a UX-112A. Batteries
> needed are three 1.5 Volt cells for the filament and two 22.5 Volt
> batteries for B+.
>
> Dale H. Cook, Chief Engineer, WWWR Roanoke VA, WCQV Moneta VA, WKBA WZZI
> Vinton VA, WKPA WLNI WZZU Lynchburg VA, WMNA/WMNA-FM Gretna VA, WOWZ
> Appomattox VA
> http://members.cox.net/dalehcook/starcity.shtml