"Martin Johnson" wrote in message
...
sorry, i checked the wrong link
here is the real one:

never seen this done before.....
what is it anyway???

http://www.kc7zwg.org

is this illegal amateur radio activity ?

Looks normal and legal to me. The big horn antennas are probably commercial.
Very common for Amateur Radio Repeaters to share the mountain top site with
commercial folks. IRLP and EchoLink are legitimate Ham Modes