Notes on T21

T21 is for band 3 in the mixer.

Early Radio, Round Coils

Calling this T21 is still being questioned. I don't have anything for the early radio that identifies this part as "T21."




Stamped with part number 51286. I don't have a parts list for the early radios that gives anything other than resistors and capacitors.

A diagram identifies this coil as "B3-S4." Band 3, slug 4.

Letters are for table below only.


		A to B: 0.26 ohm
		C to D: 28.4
	

Late Radio, Square Coils




Stamped with part number _______.

NOT PHOTOGRAPHED YET

		Winding 1: _____ ohm
		Winding 2: _____
	

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Last modified: Thursday, 30 Apr 2026