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Re: NFC: telephoning catfish
Michael: this is known as electrofishing and it ALWAYS - ALWAYS - ALWAYS
requires special permits, such as a Scientific Collection Permit.
PS: I used a backpack model in college which used a motorcycle battery
connected to a DC/AC converter with the electrodes at the end of a broom
handle. The current in the water was AC. Worked great as long as there
was enough minerals in the water to conduct a current - I had to put
blocks of rock salt upstream of my sampling locations on some mountain
brooks that were almost mineral free. The joys of granite geology.
Also, the VT Fish and Game uses a bank generator that pushes out some
MAJOR voltage for their stream surveys. I am told that you don't want
to have leaky waters or fall into the water unless you want to be
ZAPPED!
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>To: nanfa at aquaria_net, nfc at actwin_com
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>Subject: NFC: telephoning catfish
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>Does anyone any experience in catching catfish by making them surface
with
>electricity? Is alternating or direct current better? I want to make
one that
>will work as well as possible without breaking the law in my area about
this.
>It must hand cranked is about the only limitation on it. What would be
the
>best parameters be for making catfish come to the surface? Could
battery power
>be used? Higher voltage or higher amps? The only ones I can buy are old
>fashioned and I would like to use a little bit of technology to improve
it's
>working capacity.
>
>
M
>ichael Hissom
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