02-19-2023, 12:22 PM
So some good news and not so good! First, after going through everything as mentioned in my last post, I got to looking it over with a more discerning eye and what I found was there was a black spot on the 1st RF transformer. I remeasured it and compared to the same transformer on my parts set and even though they checked out close, I decided to just change it. After firing it up and resynchronizing it, I now get a few more stations and on the best one I even had to turn down the volume some! So I went ahead with my original plan to change over to a diode detector in place of the grid leak. Well that threw off the tuning on the last RF stage to the point I only barely get one station after I synchronized again and it’s distorted more than before. I’m thinking the 3rd RF transformer isn’t a good match for this mod . Looks like I’m done. I have attached the original schematic along with my modifications!
Ron
Ron
Bendix 0626. RCA 8BX5. RCA T64
Philco 41-250. Philco49-500
GE 201. Philco 39-25
Motorola 61X13. Philco 46-42 Crosley 52TQ
Philco 37-116. Philco 70
AK 35 Philco 46-350
Philco 620B. Zenith Transoceanic B-600
Philco 60B. Majestic 50
Philco 52-944. AK 84