RST Engineering wrote:



The equation for "horizon" is given as: horizon (in miles) equals the
square root of the antenna height in feet times two. Let's presume two
handheld antennas, both at 6 feet above the ground. That's twelve feet of
antenna height. Twice that is twenty-four. Square root of twenty-four is
roughly five, so you might expect five miles of transmit range.


Huh? I lost the math. If both antennas are at 6 feet, wouldn't it
be the square root of 6 multiplied by 2? And I can't see
the formula you're quoting, but if there's no parentheses, I think the
sqr rt function gets done first, then the multiplication?? Details!




From thirty+ years of running a ham radio on the field in Oshkosh, I feel
fairly confident in predicting that you would be able to talk from "Airshow
central" near the main arch to any corner of the field. However, trying to
talk from FondDuLac North (down at the approach end of runway 36) to the
North 40 (down at the approach end of runway 09) would be a stretch.

More power, dude! Arr Arr Arr! A pair of 4CX250Bs might be in
order, but not exactly what I would call portable As a good law
abiding ham, I think you should set an example and recommend FRS.
Besides, it seems more people here would own some FRS units than
aviation handhelds...

Scott
N0EDV

Jim