[TowerTalk] Build your own control line suppressor??

[Bob Kellow, W5LT]

Anyone out there built their own suppressor for rotor/switch control lines?
It seems the commercial ones are just boxes with MOV's across the lines, and
the MOV's are cheap.
I am doing a new install with about 36 wires going various places up the
tower, and buying the ICE or other commercial devices are getting expensive.
If you have "built your own" what varistor did you use?

Bob, W5LT