Diamond Antenna CP22E Instructions

CP22E

Base Station/Repeater Antenna

CP22E Specifications

FREQUENCY: 144-148 MHz

GAIN : 6.5 dB

POWER : 200 Watts

ELEMENT
PHASING : 5/8l Two-element

stacked groundplane

RADIALS : Three

GROUNDING : DC Ground. Antenna

element & radial
connected to
mounting pipe.

IMPEDANCE : 50 Ohms

VSWR : 1.5:1 (nominal)

MAX WIND
RESISTANCE : 70 MPH

MAST DIAMETER
ACCEPTED : 1.2” to 2.4”

LENGTH : 8.9’

WEIGHT : 2.4 lbs.

CONNECTOR : SO-239 Female

Assembly

1. Remove antenna sections and
components from package.

2. Lay upper and lower sections in a
line end to end. Assemble upper
section to phase coil using enclosed
hardware.

Note: phase coil has one end that’s
open and other end that’s solid ––
open end attaches to upper section.

3. Attach bottom section to solid end of
phase coil.

4. Attach assembled upper and lower
section to base coil assembly.

5. Fasten radials to base coil
assembly. Secure lock

nuts.

6. Attach mast brackets to antenna
support pipe. Pass coaxial cable
through antenna support pipe.
Connect coaxial cable to connector.

7. Weatherproof around connector to
prevent potential moisture entry.

• We suggest mounting immediately
beneath the antenna a one-turn
choke coil of approximately 6-10”
diameter. This will act as an
isolation choke and release strain on
connector. The coil diameter in not
critical.

• Some cables require a larger
diameter coil to prevent movement of
center conductor. Tape coil to mast.

#0111
Top element

#0112
Phase coil

WARRANTY : 90 days against

defects in material or
workmanship.

Description

The CP22E is a 2-meter monoband, 2­5/8 wavelength groundplane antenna,
optimized for the U.S. amateur band.

Made from heavy-duty aluminum, the
CP22E is easily assembled, yielding
excellent performance with 6.5 dB gain
over a 1/2 wave dipole.

DIAMOND ANTENNA Products are distributed by RF PARTS COMPANY

435 S. Pacific Street • San Marcos, CA 92078 • [phone]

DIAMOND ANTENNA Products are distributed by RF PARTS COMPANY

435 S. Pacic S treet San Marcos, CA 92078 [phone]

8. Align hole on antenna support pipe
with threaded hole at bottom of
antenna. Fasten screw with lock
washer and tighten.

#0117
Mounting clamp

#0118
U-bolt with nuts

Mounting pipe bolt

www.diamondantenna.net

www.diamondantenna.net

#0113
Lower element

#0114
Matching network

#0115
Radial with nut

#0116
Mounting pipe

FOR YOUR

SAFETY

Please read the
following safety
precautions before
antenna assembly.

• Assemble the antenna on the
ground or wide and flat place
such as on balcony before
installation.

• Do not assemble or install the
antenna on a place where you
can not have enough distance
from any electric power
lines.

• Do not install the antenna on
a rainy or windy day.

• Do not attempt to install the
antenna only by yourself.
Installing the antenna alone
on the roof may lead you to a
dangerous accident. Always
ask your friends or a
professional for help
installing the antenna.

• Do not use iron or aluminum
ladder at a reachable distance
from any electric power
lines.

• Do not install the antenna on
a mast which is not grounded
properly.

• Do not have your family
members or friends touch or
come close to the antenna,
unless they have realized its
potential danger.

TO AVOID FATAL ACCIDENT

• Do not attempt to sustain the
antenna, or any part of support
structure if it begins to fall down.
Let it fall by itself.

• Do not attempt to remove or
restore the antenna or any part of
support structure if it touches an
electric power line. Let it be as it
is, do not touch it, and call your
local electric power company
immediately.

IN

CASE OF AN ACCIDENT

• Do not touch a person or an
animal who is or seems to be in
contact with the antenna or any
support structure which is fallen
on a live electric power line.
Touching one may lead you to be
electrocuted.

• Do not attempt to separate a
person or an animal who is or
seems to be in contact with the
antenna or any support structure
which is fallen on a live electric
power line by yourself. Call or
have someone call a police offi­cer, ambulance, or doctor
immediately.

ANTENNA INSTALLATION

PRECAUTIONS

To determine antenna installation
location, there are several factors
to be taken into account. First
thing is antenna propagation
direction to specific target
stations. As to whether there are
any obstacles such as tall build­ings on the line of sight. Next is
specific installation location. As to
whether specific location is
adequate in terms of antenna
support and surrounding safety.

• Do not attempt to install the
antenna by yourself if you do not
have any experience in installing
base station antenna. Ask
your experienced friends or a
professional for help.

• Do not attempt to install the
antenna at a location where it
does not have enough distance
from nearby electric power lines.
It is advised to install the antenna
at least twice of total antenna
height from nearby electric
power lines.

• Do not install the antenna on any
type of tower, pole or
telescopic mast which exceeds
30 feet high, if you do not have
enough experience in installing
the antenna on that kind of
location. Ask your experienced
friends or a professional for help.

• Do not use more than 1/10’
section if you install the antenna
on iron plumber’s pipe. Attach
guy wire if multiple pipes are
used to install the antenna.