[TowerTalk] infos about relay type.

[VE2RYY]

Hello 
We are going to build a 3 element vertical on 160 Meters.
In each parasitic element we want to put a relay to make a RFL ou a director as the parasitic are t-shaped element...60 ft from the a quarter wave vertical.
We never use more than 500 watts in the driven.
Now I was told to put big relays in the parasitic, I mean relays with very good space bewteen the contacts, but I find these relays very big .They look like 30 amps power relays.
I wonder if anybody could give his advice on this fact....
What type of relay is recommended. Once again, the relays are in the parasitic elements...not in the driven....
I would appreciate very much any advice
Thanks a million
NOEL