Topband: Receive ant - binocular cores

[n0tt1 at juno.com]

Hi Tony,

" Just can’t figure out how it blew the ferrite into little pieces..."

If it was lightning, it's the pressure of the wires (trying to move away
from one another) pressing against the walls of the brittle ferrite core.
So, the core just exploded.  Electromotive force at work.  :O)

On the photo I sent you...no damage to the wires there either.  
The white Romex when the base of a
windmill tower, down to the switch, then back out again toward the
circuit breaker box.  The wires where forced apart in that vertical
section
of conduit because of like charges/currents in those wires.

I can send a copy of the photo to who ever is interested.  Read more
below.

73,
Charlie, N0TT

On Mon, 5 Oct 2020 14:58:17 -0400 <tony.kaz at verizon.net> writes:
Hi Charlie,
Yep, got your picture. That was weird.
I am suspecting lightning. Just can’t figure out how it blew the ferrite
into little pieces and not one mark on the #30 wire for the primary and
secondary.
N2TK, Tony
 
From: n0tt1 at juno.com <n0tt1 at juno.com> 
Sent: Monday, October 5, 2020 11:54 AM
To: tony.kaz at verizon.net
Subject: Re: Topband: Receive ant - binocular cores
 
Hi Tony,
 
"Any ideas what could do
that to a ferrite core?"
 
Probably lightning got to it.
 
(Photo may not be available on the email list)
In the attached photo, lightning blew apart a plastic
3/4" conduit, "here" and elsewhere in my barn.  Similar
charges in the wires repel, pressing against the walls of
the conduit with enough force to blow it apart.  Shards of
plastic flew away as far as 40 ft!
 
73,
Charlie, N0TT
 
On Mon, 5 Oct 2020 07:18:17 -0400 "tony.kaz--- via Topband"
<topband at contesting.com> writes:
> I use BN-73-202 cores for my receive antennas - Pennants, BOGs.
> 
> Finally getting time to check out my receive antennas. One BOG was 
> very low.
> The BOG transformer was broken. I mean it was totally destroyed. The 
> largest
> piece was 1/8" long. The primary and secondary wires, #30 were 
> intact and
> neither open or shorted. The wire looked pristine. Any ideas what 
> could do
> that to a ferrite core? Any reason I should change anything other 
> than just
> wire another transformer?
> 
> N2TK, Tony 
> 
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