[Texasrocker]

Sounds good Codefox! Ive rebuilt several of the old farm-radios yrs ago and have a few in my collection. I built a ac/dc power supply in a old 30s Motorola car radio metal cab ( looks kinda cool), and I use it to power up my old farm sets occasionally. I intend to get around to installing a seperate ac/dc supply into each radio individually someday.
I remember when radio-shack used to carry the transformers in-stock for a few $ ea several yrs ago that worked for these type ac/dc supplies. Im not sure they would still have them anymores. They probably stopped stocking them to make more room in their stores for cell-phones or Ipods.
Sounds like you will be enjoying your Sparton very soon!