|
Ron said: I need some advice on where
to place the TCAD antenna's on a Legacy.
Ron I feel your pain. I
have been working on putting external antennas on my IV-P for 3 months.
Nobody wants to give much advice. Here's what I have peened out of
Ryan and Lancair Avionics. The top antenna should be at the highest point
of the fuselage so as to not block its visibility fore and aft. On the
IV-P this is near the door. The lower antenna just needs to be 24
inches from any other antenna. If you have to violate this dimension, make
sure it is not relative to the transponder antenna. They do not like each
other due to similar frequencies. All antennas want a 36 inch
diameter ground plane. I have chose to use the "paint on" ground
plane. You do not use the rubber antenna pads when using the paint on
ground plane. Even on the IV-P there is not enough room to get 36 inch
ground planes on all antennas. I have two com antennas, transponder and
TCAD antenna on the belly. I do have 24 inches from the TCAD to any other
antenna. This required moving the 2nd com antenna back behind the main
gear doors, similar to the location used on the Columbia. The next big
thing is making sure the antennas do not interfere with "other stuff" inside the
fuselage. I'm still concerned about this. Hope there is
some new bit of info here.
Craig
Berland
|