Been doing some checks. Each section of the stand (made from Speedframe)
does seem to be electrically insulated from others - due to the plastic
sleeves in the joints. Even although the joints are made of steel.

So what we effectively had was two bits of approx 6" long 1" square tube
bolted to the mounting brackets of the X/O, and making a reasonable
electrical connection. Forming if you want an 'H' shape. Wonder if this
was acting like an aerial? Picking up gawd knows what, of course.

--
*Puritanism: The haunting fear that someone, somewhere may be happy.

Dave Plowman London SW
To e-mail, change noise into sound.