[Boatanchors] Receiver Antenna Input Question
Carl
km1h at jeremy.mv.com
Sun Mar 1 20:38:45 EST 2009
By the time a NE2 fired at 90V the front end coils would be fried
especially on the lower bands. The Navy used a neon bulb to protect
front ends from TX antennas that were often only 50' away but it was
biased so it fired at a much lower voltage. It was also much more robust
than a NE2.
A neon will also bleed off lightning charge buildup from a nearby strike
or cloud to cloud discharges. With a Beverage antenna its not even
local, Ive been bit by a strike several miles away.
ARC-5 receivers had a NE2 or similar which was effective against the
fairly low power of the matching TX.
Carl
KM1H
----- Original Message -----
From: "J Forster" <jfor at quik.com>
To: <w0ng at comcast.net>; <boatanchors at mailman.qth.net>
Sent: Sunday, March 01, 2009 8:09 PM
Subject: Re: [Boatanchors] Receiver Antenna Input Question
AQn NE-2 will not absorb the energy from lightning. It's more for static
buildup on the antenna. Yes, it's a good idea.
-John
w0ng at comcast.net wrote:
> Would appreciate some advice here. I have a National NC-303 receiver
> that I'm restoring. I had a 75A-2 once that had a neon lamp (NE-2 ???)
> across the antenna input connection to supposedly act as a surge
> supressor for lightning, strong static charges and strong rf energy
> from nearby transmitters. Is this a good idea? Does this really work?
> Is there a better device than a neon bulb? Appreciate any opinions,
> etc. 73, Bill, w0ng
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