Shadow Meter mask - Printable Version
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Shadow Meter mask - BDM - 05-25-2008
Did later shadow meters like those used in the 1936 series sets use a mask over the shadow Meter? Or were these used on earlier sets?
http://www.renovatedradios.com/images/Parts/Smeter_sm.jpg
- signaltracer - 05-25-2008
Hi Brian,
I'm definitely no authority, but can say from personal experience that the only Philco's I've owned with the SM were those having the early version, and I have yet to come across one of those grommets or masks you pictured. So I would have to assume my sets either never had them or that perhaps they had rotted away, but you would figure that even with deterioration, some remnant of decayed rubber would remain--sort of like when tuning cap mounts turn into gooey puddles of kibbled crud.
Charlie
- BDM - 05-25-2008
My thoughts exactly Charlie. They must have been used on early sets? Maybe Ron or Chuck can confirm this.
- Doug Houston - 05-27-2008
I'm not sure if I've ever seen a mask in question. I do know though, that the shadow meter on the '37-'38 sets fastened to the bezel with spring clips that were part of the bezel. The meter had a connector on it, and unplugged when you removed the chassis from the cabinet. That made it a little easier to unsnap the wire snaps.
NOW, I'm trying to recall if shadow meters were even used on '38 model sets......? I don't think they were on the 37-690. I'll have to look.
- BDM - 05-27-2008
Doug, some of the 38 models did. There is a 37-116X on "Bay" right now without Magnetic tuning. It has a shadow meter.
- Texasrocker - 05-28-2008
I have also repaired many vintage Philcos from that era. I have never seen a shadow-meter "gasket" of sorts as in your photo. Im sure Ron & Chuck will be able to clarify on the identity of this part if it was original and needed in some of the Philco sets. I learn something new everyday checking in here indeed!! The shadowmeter was a wonderful-invention indeed! Not necessarily "accurate", and otherwise needed a "mask" -gasket? If I ever need one of those, just bet I can use some home window-AC installation gaskets to make a good repro with my olfa-knife!?? Havent tried that yet! Next best invention to the orig Philco bake-light block condensers? Reckon? (hee hee)
- Ron Ramirez - 05-28-2008
A question for the OP, to clarify:
Brian, are you asking about a gasket that goes over the end of the shadowmeter, or a screen on the front of the shadowmeter which is illuminated by the light from the back of the shadowmeter (and darkened by the shadow)?
Shadow meter "screen" - AI2V - 05-28-2008
If it's the yellow-orange screen that is being spoken of, I've always used a piece of old dial- cleaned with alcohol to remove all printing. Quick and simple, and the right color and thickness.
RE: Shadow Meter mask - BDM - 05-28-2008
Ron, my understanding of this part in question is it installs over the front of the shadow graph, in between the glass and graph itself. Supposedly to shade any stray light out that could effect the "shadow". I was wondering since this part is offered on Ed's WEB site.
http://www.renovatedradios.com/
- Ron Ramirez - 05-28-2008
Okay, you mean a gasket.
I have only seen these used on 1935 Philco models. Or, to be more precise, the gooey remnants of same as Charlie mentioned in a previous post. I've never seen any evidence of gasket usage in older or newer Philco shadowmeters - only 1935 models.
And I've only seen one original gasket that was still intact; on a 200X I recently completed for a client.
Yes, Ed at Renovated Radios now offers this gasket, along with many other very useful parts.
- BDM - 05-28-2008
Yes he sure does. Many grommets that are needed for a proper fit. Ok on this gasket, had me wondering.