05-02-2019, 08:44 PM
I robbed the cone from a Celestion speaker that was used in Allen Organ speaker cabinets a few years ago. I wish the diameter was about 1/2" larger, but it will do. Sounds MUCH better than the "cone" that someone put in previously. I have some bass now since the cone can move! Next I need to clean up the tube shield that I bought off from paybay. I will try to preserve the the 2 original stickers (patent and tube layout diagram).
As I have found often in the past, tracking is a problem. I can get the frequencies close enough, but the RF and Detector don't track well causing the sensitivity to vary dramatically from one end of the dial to the other. I've been able to improve that dramatically by judicious plate bending. Lots of trial and error. I suppose it really doesn't matter since the radio will probably never be used seriously and having it work well on one end of the dial for demonstration purposes would be all that's really necessary . But hey, getting to work better than it probably ever did is kind of fun.
As I have found often in the past, tracking is a problem. I can get the frequencies close enough, but the RF and Detector don't track well causing the sensitivity to vary dramatically from one end of the dial to the other. I've been able to improve that dramatically by judicious plate bending. Lots of trial and error. I suppose it really doesn't matter since the radio will probably never be used seriously and having it work well on one end of the dial for demonstration purposes would be all that's really necessary . But hey, getting to work better than it probably ever did is kind of fun.
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