T18 is for band 6 in the 2nd RF module.
It appears that the metal sub-chassis parts are drilled for either type of variable capacitor.
Stamped with part number 51283. I don't have a parts list for the early radios that give anything other than
resistors and capacitors.
A diagram identifies this coil as "B6-S14"
A to B: 0.01 ohm C to D: 0.99
There does not appear to be any pin numbers or key on the square coils so I tried to use the two terminals on the long dimension with the stamped part number between as 'A' and 'B' with the other two being 'C' and 'D'. I ran into coils on a different radio that broke that plan. I went with 'Winding 1' and 'Winding 2'.
Stamped with part number '51B575' or '51 575'.
Winding 1: 0.01 ohm Winding 2: 0.99
Page: /T18_RF2/Index_t18.shtml
Last modified: Friday, 24 Apr 2026