RB RF Probe puzzler - any thoughts please?

[pwdrive]

Here's the first of a two part video about the Radio Bygones wobbulator, it rambles on about the Jasonkit one for a bit then switches to the Radio Bygones one, part two is around somewhere. It explains what's what. The bloke has quite a few radio related videos

http://www.youtube.com/watch?v=tx4xx4umG4I

Lawrence. [EDIT: Part two....]

http://www.youtube.com/watch?v=z86w3CwLMXo