"junius" wrote:

I've used one of those Alpha Delta Zapp Trappers that came with an
Eavesdropper antenna and also have used the Alpha Delta Delta Four
switch w/ "Arc plug" cartridge. Okay so far in using either of these.

If there's an advantage gained by going with the Polyphaser product as
opposed to the Alpha Delta lightning protection mentioned above, could
any knowledgeable person please let us know?

thanks,

junius

See my earlier post on the subject.

The worst sort of protection is the kind that actually makes things
worse, such as a discharge-tube ("arc plug") that only protects one of
the two antenna conductors.

A far more common approach is to take the discharge tube, connect it
to the center conductor of the coax and then bond the ground side to
the shield of the coax. This is what the suppressor sold by MFJ,
among others, does. If your A-D switch does this, at least it won't
assist in frying your gear.

PolyPhaser and ICE add a blocking capacitor and fast-acting gas tubes.
The speed at which they fire matters.

For receive-only application, PolyPhaser also provides semiconductor
protectors, but they aren't as durable as their gas tube protectors.

I personally use IS-B50LU-C0 (or IS-50LU-C0) Polyphasers for my HF
equipment and they have gotten me through a number of hairy
situations, including one direct strike.

Whatever you use, make sure it is used as part of a mitigation system.
Putting a supressor in-line all by itself won't do you any good at
all.


--
Eric F. Richards

"Nature abhors a vacuum tube." -- Myron Glass,
often attributed to J. R. Pierce, Bell Labs, c. 1940