Picture 1 -- Small MT-1
Picture 2 -- Beehive Mount
Picture 5 -- SS Flat Plate
Installation
Before installation of this antenna there are a few
things you have to consider. To get peak performance you
need to try to mount the antenna in a location where
the decoupler (this is where the coil comes out of the
antenna) is at least as high as the highest part of the
vehicle. Next, and this is the most important is the
vehicle ground plane must be close (12" or less) to the
base of the antenna, this ground can be provided with
ground strap at least 1" wide (small wire does not carry the
RF ground well). The best way to provide this RE ground is
to use mounts that are bolted directly to the vehicle
ground that are unpainted or uncoated to provide the
best RF and DC ground path for the antenna. All
mounts made by Tarheel Antennas are glass beaded 304
stainless steel. In most cases with these mounts no other
grounding is required. Some examples are in pictures 1- 5.
After installation if the SWR will not go below 1.5 on
the frequencies above 10 MHz it's because of the
ground path mentioned above. Again, ground close to the
base is most important with this and any other
antenna.
This is a large antenna that will require heavy duty
mounts to withstand the pressure produced from the
windload. All of the Tarheel Antenna mounts are
designed to take this load.
While we have a variety of mounts to lay the antenna
down horizontally, it's designed to be mounted
vertically. While using these mounts, just make sure the
anti-rotation rib that's on the antenna will be at the bottom
while in the horizontal position.
Picture 3 -- SS Door Jam Mount
Picture 4 --- MT11S & Small MT-1
