Greetings Gentlemen: I have this WIRELESS SETS No-19 AERIAL VARIOMETER ,with a modified RF input connector ,Available for sale for $20.00 .It has a lot of greenpaint missing and a few screws . It has a tuning knob and dial-numbered scale on one end and theAntenna insulator on the other end . Al,W1TUK c/o ispoulin at aol.com