Opek UH-2401 Manual

UHF BASE STATION GROUND PLANE ANTENNA

Specifications

Assembly

1. Refer to the drawing (rear side of this instruction ).
2. Put the locking nut and washer onto the ground plane radials, then screw the three radials(part #2)
into threaded holes on the metal antenna base(part #3) and tighten them by fingers. Secure the
radials by tightening locking nuts with wrench.
3. Secure supporting pipe (part #7) to mounting pole (not included) in desired location using brackets
(part #9), U-bolts (part #8), locking screws (part #4), locking washers (part #5), and locking
nuts(part #6) supplied. Tighten them securely with a wrench or screw driver .
4. Run up the cable from radio through supporting pipe (part #7) and screw PL-259 on cable end
tightly onto SO-239 connector at the bottom of antenna. Assemble antenna into support pipe with
open threaded hole turned so that it will align with hole on support pipe for locking screw. Screw
the locking screw (part #4) into hole and tighten it securely with wrench or screw driver .

Adjustment

UH-2401 works well on any frequency between 430 – 490 MHz by radiator element cut-tuning. Please refer
to the drawing on the rear side of this instruction sheet.
Unfasten the locking screw on the metal antenna base(part #3) of UH-2401. Pull SO-239 connector out and
slide the radiator element off the outer tube carefully. Unfasten the screws on the radiator with a screw driver.
Cut the L1/L2/L3 to proper length according to the cutting chart. Then assemble three parts of radiator
elements and fasten screw with a screw driver. Slide the radiator back into the outer tube and push SO-239
to proper position then fasten the locking screw with a wrench (part #10).
Now you can follow above " Assembly step 1 to step 4 " to install UH-2401.
MODEL : UH-2401
GAIN
VSWR
FREQUENCY RANGE
POLARIZATION
IMPEDANCE
POWER CAPACITY
CONNECTOR
OMNIDIRECTIONAL, 3-SEC. 5/8λ DESIGN
LENGTH
WEIGTH
6.5 dB
Less than 1.5:1
430 -490 MHz (70 cm)
Vertical
50 Ohm
200 Watts
SO-239
1.5 Meter
About 1.0 Kgs
®
MADE IN TAIWAN