RadioBanter - View Single Post

August 5th 03, 01:20 AM

In article ,
(Casino) writes:

I'm currently restoring a 1939 vintage Hallicrafters S-19R
communications receiver ("Sky Buddy") and I need to replace a blown
power transformer. The original transformer is horizontally mounted
with 2 x 2.5 inch mounting centers (distance between screw holes).
Primary voltages are 700 VCT (350-0-350) with 5 and 6.3 volt windings.
If anyone has a transformer (either Hallicrafters OR any transformer
of similar size/voltage) to sell or donate, please e-mail me. Thanks.

Hello again,

I looked at the schematic for the S-19R, and I'm not sure you really want a 700
VCT transformer. The set uses an 80 rectifier, capacitor input filter, and the
speaker field for the choke. A 700 VCT transformer in that setup will give well
over 350 volts B+ because of the capacitor-input filter. 540 CT is a lot more
reasonable.

Are you still looking for a transformer?

73 de Jim, N2EY