The Fine Things are Always Hand Made
Purchased this radio from the Philco guru, Ron, and have been playing with it a bit. I studied the parts list and discovered that all of the coupling caps are Mica, and the bypass caps are bathtub style soaked in oil. I disconnected a couple of both and tested them and they seemed fine, so I decided to power it up slowly, monitoring the B+ line, paying special attention to ripple as the B+ came up. Everything seemed fine all the way to full voltage, and the radio played! ripple voltage was very low and there was no hum. I've had it playing for several hours with no problems.
I will re-stuff the electrolytic's soon, but will wait till problems develop before I start redoing all of the bathtub caps. Hopefully all of the mica's will be fine.
These things are built like the proverbial brick house. Amazing! I guess it's as simple as tax money can make it. Sensitivity and selectivity are excellent, and the sound is pretty good through an added speaker.
The biggest problem is the brightness of the pilot light. It's in the return line to the negative power supply since there is no power transformer. it is the proper lamp, but it is just not bright enough to shine through the thick dial. Do any of you have experience with this? If that's all I can expect, then I'l play with some sort of LED augmentation cuz I can't read the broadcast scale.
Very nice! The first Scott "boat anchor" I was exposed to was aboard the USS Pampanito in the San Fransisco harbour in 1991...
Maybe the dial plastic has darkened over the years, causing the lamp to not shine through. If the bulb is the correct one, I wouldn't put in a larger incandescent one, as it may melt something. LED might be the way to go!
I installed a new plastic dial cover as the old one had yellowed considerably. I also installed several LED's behind the dial to give the result shown here. Now I need to find a way to put the dial numbers on the plastic.
what do you need engraving on the plastic, I could laser it on for you?
Thanks Mike. How do I get it to you? I can send the original and the replacement.
Mike, I remember you are in England! That might complicate it a bit.
The only problem is the time, I am quite happy to make the part and you pay only the postage.
It's been a long time since I've been on this forum, but I wanted to stop by and say that I really enjoy and appreciate what Rob has done with that SLRM. Great job, my friend!
Thank you, Ron! See you in a couple of weeks to pick up that Philharmonic.
Thank you Mike!!! Here are a couple of photos of the finished dial with numbers etched in by Mike Hadley. Mike, I decided to use the one that had the numbers engraved on the back side. That way, the ink in the engraving can't get dirty.
Man, that's beautiful! GREAT work Mike H.! Looks as good if not better than original.
Well, considering the yellowing of the original...definitely better than original.
Thanks for the thank you,
there are plenty more where that one came from.