"Richard Riley" wrote in message
...

When you're actually using the marker beacon - when you're on final
and it goes off - you're directly over it's transmitter, in line of
sight, and only a few hundred feet away. The transmitter is a pretty
tightly focused beam. So it's hitting you with lots and lots of
power. Your antenna could be absolutely awful and there still more
than enough power to activate your MB.


Hi Richard,

Thanks for the clarification; I now understand and it makes sense that the
needs of the marker beacon antenna would be much less than for a com
antenna.

Thanks,
Dennis