YEARS A GO AS A SEMI BEGINNER DESPERATE OF NOT BEING ABLE TO FIND RFC COILS IN MY HOMECOUNTRY I HAD TO CONSULT THE AUTHOR OF THE BOOKS I USED AS REFERENCE . THIS WAS :

SIR CLIVE SINCLAIR, WHO WAS KIND AND MODEST ENOUGH TO RESPOND MY LETTER THUS CLARIFYING THE MAKE OF RFC COIL.THIS LETTER IS HIS KIND REPLY

THANK YOU   !!! SIR CLIVE SINCLAIR

Volume Controll

R.F. CHOKE COIL.

VARIOUS RFC COILS