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Old June 4th 07, 02:43 AM posted to rec.radio.amateur.antenna
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Posts: 182
Default Through-glass antenna power limits


"Thomas & Karen Mitchell" kg7uATolympus.net wrote in message
...
(I realize that a through-the-glass antenna is less than ideal.
Nevertheless, that's what I have to use in my situation.) The one I
have is for 2 meters (NOT dual band), and the label says up to 50
watts. I have an Icom IC-2200H, which has a maximum of 65 watts
output.

What bad things may/could/will happen if I put 65 watts through the
antenna?

Thanks!

Tom Mitchell -- KG7U
Port Angeles, Washington. USA
--------------------------------------------------------------------------
Tom Mitchell, Port Angeles, Washington, USA
http://www.olympus.net/personal/kg7u
--------------------------------------------------------------------------

Further to my earlier posting and slightly off topic but I have been
browsing through my car manual and note that the manufacturers specifically
forbid the installation of transmitters operating at more than 10 watts
power. Checking up on this reveals that in the event of some of the
electrical earth bonding connections in the car becoming faulty or breaking
two possible disaster scenarios exist. The first is that the computerised
engine management unit might misfunction causing the engine to suddenly stop
or the antilock braking and stability systems to malfunction. The second is
that the pyrotechnic charges in the airbags might be triggered.

Admittedly these two situations are dependent on a chain of faults/failures
occuring and the manufacturers are just trying to cover themselves against
law suits. Vehicles are tested for electromagnetic immunity at far higher
levels than this, but you might want to double check your manual or with the
manufacturer about the maximum permissible transmitter power if the vehicle
is fairly new, fitted with electronic engine management, safety equipment
and airbags.

Take a deep breath before transmitting with all the controls set to 11...

Mike G0ULI


 
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