In article , "Mads"
wrote:
Anyone with depth knowledge of groundplanes for transponders?
- their mission (any theory would be appreciated)?
They complete the electronic circuit for the antenna.
- required dimension
1.5 feet from the center of the antenna should work fine. (1/4 wave)
- required shape (is a cross OK or does it have to circular)
Eight crossing strips of aluminum tape, about 3 feet long, should do
quite nicely.
- material (is aluminium tape OK?)
Yes -- as long as you have electrical contact with the antenna base.
Remove the adhesive at the center so that the aluminum tapes all contact
each other.
- installation - follow the a/c body, or flat
Doesn't matter too much.
- how critical is the above (loss of signal strength?)
Keep it away from other antennae.
|