I
Yeah, know all about ERPs, but do the flat panel transmission antennas
actually have much gain ?

They stack and phase 'em to get the pattern/gain/and whatever
directivity they want..

Thought they were just a bunch of co-phased
dipoles.

Some are some aren't. Kathrin do some info on theirs...

Bet the launch power from the tx is still a good 2 or 300 kW,

Depends. Take the Heath, IIRC theres a 1000 K going to the North, but
not as much to the South on the analogue stack but the DTV is different
again..

seem to remember it was around 50 -70 K up the pipe..

though, and I'd bet that there was a fair whack of volts on the klystron to
get there ...

15 kV ish IIRC...

Arfa



--
Tony Sayer