I still own the receiver I purchased when I was in high school. I took it apart to give it a tune up. Even though all the bulbs still worked, I decided to replace them before putting the unit back together.Initially I replaced one bulb for the dial so I could compare it to the original incandescent bulb. The color is identical, just slightly brighter. These bulbs fit the socket just like the original ones.These bulbs have a built-in rectifier which is great because the bulbs for the radio dial are powered by AC voltage. The bulb for the signal meter is powered by DC voltage. If it weren’t for the rectifier, you would see the 60 hz flicker from the bulbs for the radio dial.I am very pleased with my purchase.
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