Random wire antenna   Improved random wire antenna   Static discharge unit     

9:1 transformer    DX 390 mute modification     Attenuator  

Snake  Loop   Ferrite coupler

MFJ 956








After checking for proper solder joints, pot all components in epoxy. This, of course. will make the unit unrepairable but will ensure that it is totally weatherproof.  Rather than repeat what  has already been said about this device, I will just refer you to someone that explains this quite well. John Doty's article can be  read here