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7
ANTENNA CONSTRUCTION – PARTS & TUNNING
INFORMATION
ANTENNA CONSTRUCTION—PARTS & TUNING INFORMATION
If it becomes necessary to re-tune the antenna you must read and understand the antenna’s characteristics and
components this will also assist us in the event you require telephone/e-mail support.
The Antenna is made up of the following parts:
1.
Center / Main Section
- the center/main section of the antenna forms the heart and soul of the Antenna it also
facilitates an effective method to mount the antenna to your tower/mast/pole with two clamps.
2.
At the lower part of the main section
you will note the
aluminum “HUB”
(see figure 1) the length of
aluminum tubing below the hub is used to mount the Antenna to your mast/tower/pole; the hub must remain free
and clear of any other object.
3.
Bolted to the hub
are
4 x 1/2” aluminum tubes that rise to form the isotropic ring
, this section is always pre-
assembled at our factory however it is wise to check the nuts and bolts are tightness. (Do not over tighten)
4.
The hub
incorporates the eyelet for the
“gamma match” system
(see figure 2). Due to various applications
gamma matching systems may vary.
5. The gamma match
is pre-tuned to provide maximum performance for your desired frequency, in the event you
need to re-tune the antenna the gamma rod may require a slight adjustment, IMPORTANT if you do have to alter
the position of the gamma rod do this in millimeters, a small movement in either direction will yield big results.
6.
Nylon hub
is locked into place by a set screw; remember to unlock the set screw if you need to relocate the hubs
position. This nylon hub is keyed to accept the 4 nylon stabilizers, insert each stabilizer at an angle then push into the
keyed/slotted position on the nylon hub.
7.
Each telescopic section should be extended to
the indicated marker ring, (section #1 is the main element that
holds the hub) section #2 and #3 are secured by clamps, do not over tighten the stainless steel clamps as it may strip
the gear.
Fig. 1: The antenna construction. Note N connector ships already soldered, you only need to solder it if you purchase KIT.
Chapter
3
