Diamond X50A User Manual

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
holes and fix
Feedpoint section
Support Pipe
Mast
Brackets
Fig. B
Mast
Fig. C

Diamond X50A Specifications

General

Type	Base Station Antenna
Frequency	144/430 MHz
Frequency Range	144-148 MHz / 430-450 MHz
VSWR	Less than 1.5:1
Max. Power	200 W
Connector	SO-239
Impedance	50 Ohms
Gain	4.5 dBi (144 MHz) / 7.2 dBi (430 MHz)
Length	1.7m
Weight	1.0 kg

Summary

Product Description and Specifications

Key Features and Performance

Details high performance C-Load structures, dual band operation, and DC ground for protection.

Technical Specifications

Lists frequency ranges, gain, power, impedance, VSWR, wind resistance, mast diameter, length, weight, connector, and warranty.

Antenna Assembly Instructions

Radial Element Attachment

Attach three radial elements to the feedpoint section with FRP outer shell.

Mast Bracket and Cable Connection

Fix mast brackets, connect coaxial cable, and secure support pipe to feedpoint section.

Mast Mounting

Mount the assembled antenna to a mast, ensuring balance and firm fixing.

Safety Precautions

General Safety Guidelines

Covers safe assembly locations, weather conditions, installation assistance, ladder use, and grounding.

Fatal Accident Prevention

Instructions to avoid fatal accidents by not catching falling parts or touching live wires.

Accident Response Procedures

Guidance on not touching persons/animals in contact with live wires and calling emergency services.

Installation Location and Precautions

Advice on selecting location, considering obstacles, power lines, and installation experience.

Mast and Pipe Installation

Details on using appropriate masts, avoiding specific pipe types, and using guy wires.