[Hallicrafters] vibrator how it works

[GDM]

Back in the late 1960's I was in need of a "work shop" radio out in my 
garage.  My search through the electronic debris turned up a 6VDC AM 
radio out of a 1952 Oldsmobile (push pull 6V6's...great sound!).  One 
6.3 volt, 1O amp filament xformer did the trick.  110 volt winding was 
wired up to a standard wall plug, the vibrator was removed from the 
radio and the 6.3 VAC secondary was wired to the 6 volt input winding on 
the power xformer on the radio.  Worked for 15 years.  Glenn mentioned 
this approach in passing in his post but didn't describe the detail.

Regards,  Gary  W9OAK


Glen Zook wrote:
>
> During the 1960s (and into the 1970s) before the
> Japanese got into the amateur radio FM market it
> definitely was very common to build base stations from
> vibrator powered mobile units by using a heavy duty
> filament transformer.  Many of these units operated 24
> hours a day without any problems with the
> transformers.
>