08-30-2009, 06:50 PM
Finally!! I picked all the bugs out, and it's finally stable! These sets are REALLY prone to oscillator intermittents, as the paperwork Chuck sent me says! I *thought* for a while that the globe-shaped Philco 36 first detector/oscillator I found for it was gonna work. But one minute, it was doing fine, the next...NOTHING!! Typical oscillator dropout.
So-o-o-o, I had to stick in an NOS Raytheon 236. It's been howling away over on the bench with no dropouts for an hour. Aligning the whole set brought me a little more sensitivity/volume/selectivity. This old gal needs a longwire antenna without a doubt!
Gee, I can't pick anything up on the Police band. Well DUH! There's nothing ON that band anymore! But there it is , just the same.
After recapping the whole set, I am no longer daunted by the Philco Bakelite Condensers! pfffft! Piece o' cake! This one was hard, because the chassis is only some 12" X 14", yet has 11 baklite tarboats in there, one which has so much going on above it, you can't see it much, and can't read the number on it. What a MESSY job it can be! I literally had to beat the tar out of the chassis! nyuck-nyuck! The only thing I could find to cut that tar was laquer thinner. Naptha might do it, too, but neither denatured alcohol or acetone will.
I REALLY MUST find a shield for the 236. I guess, since I can't locate a proper shield for it, I can put a 4-piece Goat shield on there, and see if I can get solder to stick to it to properly ground the shield to the chassis. You can wave your hand around the tube while the set runs and tell it needs shielded.
But it's done!!! And to think...I shocked my self once with my hands inside a live chassis, and only once did I burn myself
"checking to see how hot the 42 output tube runs."
NEEEEEEXT!!
So-o-o-o, I had to stick in an NOS Raytheon 236. It's been howling away over on the bench with no dropouts for an hour. Aligning the whole set brought me a little more sensitivity/volume/selectivity. This old gal needs a longwire antenna without a doubt!
Gee, I can't pick anything up on the Police band. Well DUH! There's nothing ON that band anymore! But there it is , just the same.
After recapping the whole set, I am no longer daunted by the Philco Bakelite Condensers! pfffft! Piece o' cake! This one was hard, because the chassis is only some 12" X 14", yet has 11 baklite tarboats in there, one which has so much going on above it, you can't see it much, and can't read the number on it. What a MESSY job it can be! I literally had to beat the tar out of the chassis! nyuck-nyuck! The only thing I could find to cut that tar was laquer thinner. Naptha might do it, too, but neither denatured alcohol or acetone will.
I REALLY MUST find a shield for the 236. I guess, since I can't locate a proper shield for it, I can put a 4-piece Goat shield on there, and see if I can get solder to stick to it to properly ground the shield to the chassis. You can wave your hand around the tube while the set runs and tell it needs shielded.
But it's done!!! And to think...I shocked my self once with my hands inside a live chassis, and only once did I burn myself
"checking to see how hot the 42 output tube runs."
NEEEEEEXT!!
Steve McDonald