What can we expect from the ASTROPLANE ?
An analyse with EZNEC PRO 4 using NEC4&NEC5 engines.
The wires inserted in EZNEC
Above the freespace elevation pattern with an 11 meter (36 feet) long mast attached to it.
The antenna produces 2,31 dBi gain.
Above the SWR diagram (with an 11 meter mast attached to the antenna).
In order to obtain a good SWR the antenna NEEDS to have a metallic mast minimal 12 feet in lenght as described in the manual.
Without a mast you will not able to match the antenna to 50 Ohms.
The mast is part of the antenna.
The elevation pattern with the Astroplane on a 11 meters (36 feet) high mast is grounded average ground)