fnord-The Model 46 uses a transformer but the Model 30 operated off thee batteries...an A, B and C battery from which you got several different voltages for the plate, filaments on the tubes and a higher voltage for the speaker...usually 90v.Here's a shot of the Model 46 with the transformer...big enough to choke a horse.
This is the guts to the Model 30(sans tubes). Notice there is no transformer. Power came from batteries.
This speaker goes with the Model 30(no transformer)
This one is for the Model 46
It's a good hobby but one that can sure eat into your time.
crazypipe-There are many places to get components. I can get the capacitors and resistors right here in town but if I need some tubes I have to get them elsewhere. Unless they loose their vacuum tubes lasted a long time. I remember my Dad taking me to the hardware store and he'd have a bag with probably 8-10 tubes in it to test in the tube tester to see if they were good. TV's and radios had tubes back then. Usually, and many will remember this, it took 10-20 seconds for the audio to come on as the tubes heated up to operating voltage.
mike-That is some more antennae!! Fortunately I don't need one that large and elaborate but it's a super job to say the least. I can string 18-22 gauge wire up the wall and back and forth on the ceiling to get a decent "aerial" as they use to call them. Ground is just as important as radios from the 20's and 30's wouldn't operate good without them.