Love these. A friend of mine owned and operated a drive-in for years.
Your bulb tester looks more like a tube powered audio amplifier. Not seeing any remaining speaker poles I guess they converted to FM radio sometime before they closed. Much easier to maintain. I spent many hours with my friend pulling replacement speaker wires before each new season before they switched to Radio.
I think those are 'Tungar' rectifier tubes. Kinda weird to see them on projection gear ... they were usually used in low current applications like battery chargers, as a replacement for the amazingly inferior selenium rectifier.
You could be right. Without sending new_republican back out there to get a part number it is hard to say what they are for sure. I sold tubes in the mid 1980's and would have customers come in looking for a tube that looks like "XYZ". The shape of the package is not what matters it is what is inside. We had high current high voltage tubes in that package as well.
On the rare occasions that I have the opportunity to shoot vintage equipment I try and get a shot of the builders plates and/or the serial numbers. VINs on autos. It has saved me a lot of arguments with other railroad enthusiasts over the years.
Your bulb tester looks more like a tube powered audio amplifier. Not seeing any remaining speaker poles I guess they converted to FM radio sometime before they closed. Much easier to maintain. I spent many hours with my friend pulling replacement speaker wires before each new season before they switched to Radio.
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On the rare occasions that I have the opportunity to shoot vintage equipment I try and get a shot of the builders plates and/or the serial numbers. VINs on autos. It has saved me a lot of arguments with other railroad enthusiasts over the years.
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INFERIOR SELENIUM RECTIFIER.
Are you kidding me?
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.... hi. o.o
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Thanks dude!
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