04-11-2025, 07:37 AM
Hi Dan, it’s been 10 years since I restored the electronics on my 37-116 so I’m going on some foggy memories. I remember the variable IF alignment being rather tedious. I was working with the typical service grade Heathkit RF generator of my dad’s from the late 50s and monitored it with a modern frequency counter. The constant setting and resetting of the frequencies 460-480kc and adjusting the alignment settings was touchy. I never did get exactly the same peaks but fairly close. The end result is it seems to work fine according to my ears so I don’t know how finicky you need to be. I imagine if you have a modern generator that you just punch in a frequency would make the task a lot easier and quicker. You’re right about the tuner, what a monstrosity to work on. As far as getting the dial right on frequency, my set can be off by 10kc depending on what part of the band you’re in. It is possible to tweak some of the blades on the tuning cap as the outer blades are slotted but then this being a 5 band radio, you risk throwing alignment off on some bands so it’s best not to try bending any plates at all. I did that on an AM only radio once and had good results. Good luck with your restoration, it is good performing and sounding set!
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