Comet Super Beam CSB790A User Manual

Operating
Manual
Model:
l46MHz
&
Many thanks for
your
best
choice of
our
products.
For
,vour
safety
use:
Please
read
through this Operation Manual initially
for
correct
assembling
and
proper operation.
At opening
package
and before
assembiing,
please
check all
components
are
involved.
Spgcifications;
Midclle
Phasing
Capacitor
Upper
Element
Mid-Upper
Element
Fold-0ver
Base coil
{8Type
@Gain
6Max.
Power
Olmpedance
Q
Connector
@Max Length
:
146MHz
7/8lDouble
C-Load,446MHz 5/8Ix3
:
5.1dBi(146MHz)/
?.?dBi(446MHz)
:
rsow/FMQ+A/++au:Hz)
:
50C)
: PL-259
: 1.56 m
AV.SWR
: Less than 1.5
VSWR
2.0
1q
1.0
+1 5MHz
Coil
@'llreight
: 465
g
+7,5MHz
-1sMHz
J.0
-7.5MHz
lo
1 44MHz Bond
fo
430MHz
Bond
Features:
fa.The
image
cleared
up
was
pursued, and
design was finished in
the
origrnal
iigure.
SEmploy
non
radral
form which
radial
isn't necessary, and install an
antenna,
and
it restrains a
variety
ia the SltR
by
the
plaee.
(Dlt
is the
antenna
of the wide-band
which
coyers
146/446MHz
band
each without
adjustment.
OBecause
indirect
lightning
surge
arrest
eonstruction
is
employed,
there
is no
contrnuity with
the
element
and the
center
conductor.
&The
fold-over
hinge
is convenient
for
entering
garages, parking
structures, drive-thru's
etc.., without the need to
remove
the
antenna.
QCan
be
transmitted
with
other
band wii,h
or receiving
it
by
using
duplexer
use vessel
together
I
the
simultaneous transmissron
and
receptron with 2 band
].
@The
CSB?90A
requires
an 30-239
mount
connector.
8if using a
magnetic
rnount,
be sure it
is
strong
enough
the CSB790A
antenna,
@Mount the CSB790A away
from
other
antennas or metal
The CSBTSOL
requires
a sufficient
ground plane.
If high
t,o hold
objects.
SWE is
ffi@ts EM@@ @@m@Mt
ffiMryffiffiffi
WffiMBEE
CSts79OA
446MHz
Dual
Band
High Perforrnance Mobile
Antenna
C-Load
Upper
Phasing
\
t
\
\

Comet Super Beam CSB790A Specifications

General

Type	Yagi
Polarization	Vertical or Horizontal
VSWR	1.5:1
Impedance	50 Ohms
Length	1500 mm

Summary

Safety Use

Specifications

Antenna Type and Gain

Details the antenna's dual-band type (146MHz 7/8 A, 446MHz 5/8 A) and its gain figures.

Power and Impedance

Specifies the maximum power handling and impedance of the antenna.

Connector and Length

Identifies the connector type (PL-259) and the antenna's maximum length.

VSWR and Weight

Provides VSWR performance details and the antenna's total weight.

Features

Non-Radial Design

Employs a non-radial form, eliminating the need for radials and stabilizing SWR.

Wide-band Coverage

Covers both 146/446MHz bands without requiring separate adjustments.

Lightning Surge Protection

Features indirect lightning surge arrest construction for safety.

Fold-over Hinge

Convenient fold-over hinge allows passage through garages and parking structures.

Duplexer Compatibility

Can transmit/receive on two bands simultaneously using a duplexer.

Mounting and Positioning Notes

Handling and Driving Remarks

Antenna Adjustment

Band Adjustability

Notes that the 146/446MHz bands are not adjustable.

Spanner Usage

Recommends using the standard spanner for element adjustments.

Usage Instructions

Set Screw Tightening

Confirms tight fastening of set screws using a standard spanner.

Antenna Connection

Ensures the antenna is tightened securely at its base connection.

Vertical Positioning

Sets antenna at a vertical position for optimal transmission.

VSWR Confirmation

Confirms VSWR during transmission for proper operation.

Operation Notes

Intended Use

For amateur radio operators; use within specified standards to prevent damage.

Responsibility

Manufacturer is not responsible for damage from repair or unauthorized modification.

Maintenance and Service

Malfunction Handling

Stop operation on malfunction and contact seller or engineering department.

Pre-Drive Check

Check VSWR before driving; routinely confirm set screw tightness.

Customer Service

Replacement parts available; contact shop for damage or technical matters.