RE: Open Wire Feed Line Arrestor

Posted by Ron D'Eau Claire-2 on Jan 06, 2006; 5:55pm
URL: http://elecraft.85.s1.nabble.com/Open-Wire-Feed-Line-Arrestor-tp385301p385303.html

Thanks for the link. It's an interesting product.  I had three reactions:

1) Note that the upper impedance specification is 600 ohms. Many (most) of
our doublets produce impedances along the feed line much, much greater than
that on some frequencies. That suggests the voltage ratings will be exceeded
as well except at QRP or QRPp power levels.

2) I also noticed that they did not mention any loss figures. Anything tied
between the feeder and ground will have some losses, so how much is of
interest.

3) I would never use it expecting that it'd protect my rig from a close or
direct strike. The surge from a "near miss" will be divided among the
various paths. Even if the device handles hundreds of amps of surge, that
may leave a very destructive current flowing through the rig in parallel.

Ron AC7AC

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