I recently took delivery of the 6m carbon fibre mast from Sotabeams. Planning on getting together a extremely lightweight and compact kit for portable radio. Starting with a simple choke balun for QRP dipoles and verticals. Parts used in this build are:
- T68-43 toroid
- About 50cm of RG-174
- 2 x 2.5mm banana sockets
- One BNC female chassis plug
- Small enclosure
The RG-174 fit through the toroid 9 times which should provide adequate isolation and common mode current attenuation.
(Excuse the mumbling in the last half of the video, I think I forgot I was talking to someone other then myself)