Those caps are indeed quite a bit newer than the radio most likely of late 50 s 70 s vintage.
Ceramic dielectric coupling.
Provides dielectric protection from corrosion between dissimilar metal piping.
Simon ndiritu from general dielectrics explains some basic capacitor selection guide for coupling and decoupling applications.
Inner dielectric element is a threaded thermosetting plastic laminate.
All kinds of capacitors you need in just one place.
Class 2 ceramic capacitors offer high volumetric efficiency for buffer by pass and coupling applications.
Choose the best option for your design using the comparation tool of doeeet.
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This article describes the building code and practical requirements for a dielectric fitting when connecting copper piping to steel pipes or steel fittings such as at the top of a water heater.
Capacitors are fundamental components.
The capacitance value also depends on the applied voltage.
The ceramic dielectric is characterized by a nonlinear change of capacitance over the temperature range.
Do not use with salt water.
Cadmium plated steel body.
Lasco 17 9299 3 4 inch brass female pipe thread by 3 4 inch steel female pipe thread di electric union.
Ceramic capacitors especially multilayer ceramic capacitors.
Class description common types.
Recommended for use with fresh water and petroleum products.
Ceramic capacitor dielectric application classes.
Wan 0176 w december 2005 rev 1 0 3 figure 2 ceramic capacitance vs.
Standard wall galvanized steel pipe nipples and pipe for joining dissimilar metals.
Bias voltage figure 2 shows 1µf 16v 0805 capacitors and how their capacitances vary with voltage.