A common device to use to protect against surges and the like is a
tranzorb or varistor. They aren't meant to take a direct lightning hit
(likely vaporize like most everything), but are useful for protecting
against near-hit transients. Near-hit damage is far more common than
direct-hit, but also less catastrophic so it's your call whether these
offer the protection you want.
A typical device I've seen used in some commercial antenna switch boxes
is something with a clamping voltage around 100V-200V and ~5KA surge
current rating - about the size of a nickel with radial leads.
Digikey http://www.digikey.com sells P7217-ND for around $0.50 .
73 Mike N2MG
W5FL wrote:
> Does anyone know what device is used for Rotator Wire
> Protection and can it be purchased from Mouser or other
> electronic supply? Since it is a shunt device, it must
> be a leaded device that can be homebrewed into my switch
> boxes for switch lines and into a box at the bottom of
> the tower to shunt the rotator lines. My Rotator is a
> CDE type with brake and no voltages over 26 volts.
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