Len wrote:


My question: I am assuming the navtex will suffer no damage from the
radiated energy when the 12v-power to the navtex is off. Am I right?


Short answer: wrong.

The navtex receiver can be destroyed
whether it is turned on or not. In
theory, the 12 volt wiring could provide
a convenient path for the radiated
energy to enter the unit and that
sometimes happens with all kinds of
electronics: hi-fi's, computers, battery
chargers, voltage regulators, etc. It is
usually curable.

The good news is that damage to the
navtex is very unlikely. On a sailboat,
it is almost impossible to locate a
navtex antenna far enough away from the
ssb antenna to avoid strong
electromagnetic fields.

I wouldn't worry about it, Len. Your VHF
and any AM/FM radio or TV you have on
board would be as likely to suffer
damage as the navtex.

You might consider one of the active
navtex antennas that uses a short whip.

Good luck.

Chuck

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