Instruction Booklet - D4000 and D5000 Series Omnidirectional
7
GENERAL DESCRIPTION
The TACO Model D4000 and D5000 series antennas are vertically
polarized omnidirectional antennas, specifically designed to provide
optimum performance throughout the DOT/FAA frequency band ranging
118-136 MHz and 225-400 MHz. The internal elements or dipoles are
enclosed in a fiberglass radome, ultimately resulting in a lightweight, low
profile, rugged communications antenna.
The D4000 or D5000 series antenna you have purchased, comes with a
built in clamping arrangement accommodating a 2.50 in (6.35 cm) IPS
mast. Some models are also available with an adapter capable of mounting
to a 1.25in. (3.175 cm) IPS mast. The built in clamp arrangement allows
for inline mounting of the antenna with the mast, thus sheltering the
transmission line from any environmental exposure.
THEORY OF OPERATION
The process employed in a D4000 or D5000 series antenna, incorporates
the patented Muldipol
tm
concept. The utilization of this technique results in
a unit having excellent “broadband” halfwave dipole characteristics over
its entire specified frequency bandwidth. The desired “figure eight”
radiation pattern is generally constant throughout the band. Through
“broadband” suppression of extraneous currents upon the transmission
line, the undesirable “Clover Leaf” pattern is avoided.
A grounding lug is provided at the base of each antenna for supplemental
grounding capability.
OBSTRUCTION LAMP DETAIL
LENS (RED)
CLAMPING RING SCREW
CLAMP
LENS SAFETY CHAIN
CLAMPING RING
ANTENNA
OBSTRUCTION LIGHT ASSEMBLY-E
1. Install supplied light bulb (100 Watt, 130 Volts industrial) in lamp
socket.
2. Remove one screw on the clamping ring and open it to slide onto the
bottom of the lens; close the ring on the bottom groove of the lens and
reinstall the screw.
3. Place the lens on the lamp, as shown below, and clamp down using the
lamp clamps.
8
1
OBSTRUCTION LAMP DETAIL
Install supplied light bulb (100 Watt, 130 Volts industrial) in lamp
1.
socket.
Remove one screw on the clamping ring and open it to slide onto the
2.
bottom of the lens; close the ring on the bottom groove of the lens and
reinstall the screw.
Place the lens on the lamp, as shown below, and clamp down using
3.
the lamp clamps.
Obstruction Light Assembly-E
