"Alan Peake" wrote in message
...
Hi all,
I seem to recall a while back, someone posting an article about
stopping birds - parrots in particular - from nibbling away at coax and
insulated wires. One of our local club members has 4X10 on 2m and 4X15 on
432 MHz. We discovered that ALL of the 4:1 coax baluns had been chewed -
some to the point that they were not connected to the yagis at all! Some
of the baluns had sections completely missing. Amazingly enough, he still
seemed to get out. Anyway, we have temporarily replaced the baluns but we
need to find a way of preventing a reoccurrence of parrot pecking. All
ideas and thoughts considered - sensible ones of course 
73 de Alan
Heliax or semirigid coax might cause them to give up. Especially the latter.
75 Ohm stuff would be fine for the 4:1 balun, because you actually would
want it to be 100 Ohms.
Tam/WB2TT