Description
1. High performance C-Load
structures.
2. Direct element joint structure with
two interconnected FRP outer-
shells. Enables the antenna to
maintain the same strength as one
with one piece structure. The ring
gasket makes the antenna water-
proof, and therefore maintains
performance even in rainy weather.
When required, the antenna can be
easily assembled or disassembled
by adjusting the joint bracket
accordingly.
3. Professional quality maximum
wind resistance is achieved by the
rugged structure. Superior water-
proofing eliminates unstable
VSWR that might otherwise
happen in climatic weather. This
antenna may also be used in seaside
or contaminated air environments
as it is rust and corrosion free.
4. Both of the bands, 2m and 70cm,
can be operated simultaneously by
using optional antenna duplexer.
5. DC ground structure, which
escapes high voltage caused by
lightning, protects your radio and
equipment.
Adjustment
All X-Series antennas are completely
adjustment free. If VSWR of an anten-
na is extraordinarily high, see if each
connecting part is well contacted. It is
most likely due to bad contact in the
coaxial cable and/or connector connec-
tion, or soldering problem. Be sure to
use 50ohm coaxial cable to feed the
antenna.
Specifications
FREQUENCY: 144-148 MHz
435-450 MHz
GAIN: 4.5 dB
7.2 dB
POWER: 200 Watts
IMPEDANCE: 50 Ohms
VSWR: less than 1.5:1
MAX WIND
RESISTANCE: 60m/sec (135 MPH)
MAST DIAMETER
ACCEPTED: 30-62mm
(1-1/5” to 2-2/5”)
LENGTH: 1.7m (67”)
WEIGHT: 0.9 kg (2.3 lbs.)
CONNECTOR: UHF Female
WARRANTY: 1 Year against
defects in material
or workmanship.
VSWR Charts
Assembly
1. Attach three radial elements to the
feedpoint section, which is a one piece
structure with FRP element outer shell.
2. Fix two mast brackets to support
pipe. Then connect coaxial cable to the
feedpoint section through support
pipe. Fix support pipe to the feedpoint
section with a lock screw by aligning
the holes at the bottom of the section
and top of the pipe.
3. Attach assem-
bled antenna to a
mast by taking
whole balance into
account and fix it
firmly as shown in
Fig. C.
X50A
2m/70cm Dual Band High Performance Gain Base Station Antenna
DIAMOND ANTENNA Products are distributed by RF PARTS COMPANY
435 S. Pacific Street • San Marcos, CA 92078 • (760) 744-0900
www.diamondantenna.net
Radial Element
Radial Element
Lock Nut
Feedpoint Section
Fig. A
Lock
Washer
Align the
hol