Roller Inductor Identification

[N1BCG]

I came across a 26 turn roller inductor that I'd like to identify. It's paired with a vernier which scale reads from 3 to 18 mc. The maximum inductance seems to be around 18uH. Any information would be greatly appreciated!

[KA3EKH]

That is he plate tank coil from a Navy TBW transmitter, maybe the capacitor is from the same TBW. They use a 803 PA tube and were suppressor modulated for about 75 watts of AM.

[N1BCG]

That is he plate tank coil from a Navy TBW transmitter

Thanks!  It certainly appears to be the case...





I found the manual here:

https://navy-radio.com/manuals/tbw4-ib-westinghouse.pdf

[WD8BIL]

A little less capacitance you can get it to 30 MHz.