Hello:

We get a lot of lightning strikes around here, and was wondering about this:

Presently have a receive-only random length wire running around the inside
of my attic.

Guess I'm not really too worried about "direct" lightning strikes; if there
is one I imagine I have a lot more to worry about than the radio.

But, does the roof provide any protection from nearby lightning strikes
inducing a high transient voltage
into the indoor attic antenna wire, as compared to if I had the wire antenna
strung outside the house ?
Again, from an induced voltage standpoint concern.

Or, is the fact that it is indoors really meaningless ?


Thanks,
Bob

MEANINGLESS !!

Robert11 wrote:
Hello:

We get a lot of lightning strikes around here, and was wondering about this:

Presently have a receive-only random length wire running around the inside
of my attic.

Guess I'm not really too worried about "direct" lightning strikes; if there
is one I imagine I have a lot more to worry about than the radio.

But, does the roof provide any protection from nearby lightning strikes
inducing a high transient voltage
into the indoor attic antenna wire, as compared to if I had the wire antenna
strung outside the house ?
Again, from an induced voltage standpoint concern.

Or, is the fact that it is indoors really meaningless ?


Thanks,
Bob

"Robert11" wrote in message
news
Hello:

We get a lot of lightning strikes around here, and was wondering about
this:

Presently have a receive-only random length wire running around the inside
of my attic....

But, does the roof provide any protection ...

Or, is the fact that it is indoors really meaningless ?
Thanks, Bob


The roof has absolutely no significant magnetic properties, right? SO...
the high current of the lightning is the "primary" of a transformer. The
wire in your attic is the "secondary" of a transformer. A pretty poor
transformer, but with that current, it'll induce lots'a voltage in your
wire...roof or no roof. Right?

73, Steve, K,9.D;C'I

The roof protects the antenna from lightning, even the sneaky stuff.
All you have to worry about is lightning striking the roof and
yourself if you are not under it.
----
Reg.

Robert11 wrote:

Hello:

We get a lot of lightning strikes around here, and was wondering about this:

Presently have a receive-only random length wire running around the inside
of my attic.

Guess I'm not really too worried about "direct" lightning strikes; if there
is one I imagine I have a lot more to worry about than the radio.

But, does the roof provide any protection from nearby lightning strikes
inducing a high transient voltage
into the indoor attic antenna wire, as compared to if I had the wire antenna
strung outside the house ?
Again, from an induced voltage standpoint concern.

Or, is the fact that it is indoors really meaningless ?


Meaningless. A neon to ground is traditional for
receiving antennas. Makes a good EMP indicator.


vy 73

Andy