Not sure if title is correct.
I have been working on a 1 tube Reflex radio from the mid 20's posted on Radio Broadcast.
Before I proceed I would like to research the lack of selectivity and selection I obtained today when I hooked up the radio.
I already have another thread regarding the variable condenser posted.
The coils were supposed to be wound so many turns on a 2 5/8" OD form. I had a 3" OD form and keep the turn count the same.
How would a larger diameter coil form with the same turn count affect the receiver?
Should I have done the math for say 60 turns on a 2 5/8 dia and reduced the turns for the 3" form to keep the wire length the same?
Or is the coil turn number critical?
This fascinates me - sorry for maybe dumb questions.
But before I move onto the upgraded 2 tube reflex circuit on Radio Broadcast magazine I want to be sure I have the basic correct.
Here is a link to the publication. It is from Nov. 1923.http://www.vacuumtubeera.net/RadioBroad ... azine.html