The bane of human technological advance.
The Marketing Department.
They've got to have jobs too.
On 5/30/2016 8:03 AM, Patrick Greenlee wrote:
All towers are lightning magnets so we are or should be interested in
protection but... Is it just me or does anyone else have a problem
(Problem = old fashioned term for issue) with the advertising copy below?
Arc Gas Discharge
*Lightning Protection*
OPEK MODEL: LP-350A
Warmer temperatures bring an increased thunderstorm activity. So, now
is the time to protect your radios. A good way to do this is with
lightning protectors that utilize 'arc-gas' discharge tubes. Heat from
nearby lightning strikes rapidly expand the gas inside the tubes
opening the antenna feedline much quicker that old fashion surge
protectors.
What a revelation, all these years I thought the gas tubes ionized
above a certain potential offering lightning induced currents a low
impedance path to ground thus protecting equipment further down the
coax. But now we know that heat from nearby lightning strikes
expanding the gas to create an "open" is the agent of protection not
ionized gas offering a low impedance path to ground. (all those years
studying physics... wasted.) Associative memory... I recall a flight
attendant on a red eye from Dulles to San Diego instructing the
sparsely occupied cabin that in the event of sudden loss of cabin
pressure masks would deploy from the ceiling and that we should grasp
the mask firmly, give a tug to start the flow of oxygen, place the
mask over our navel and continue to breathe normally. Maybe later she
got a job writing advertising copy.
Patrick NJ5G
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R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441
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