Galaxy DX-33HP Owner's Manual

Download this Manual Free of Charge at

http://www.cbtricks.com/

Printed In Malaysia

AT1148010H

DX- 33HP

10 Meter Amateur Mobile Transceiver

OWNER’S MANUAL

POWER

RX/TX

BAND

D/A

E/B

F/C

MED

MIC RF

VOL SQ

OFF

AMFMPA

HI

LO

NB/ANL

OFF LOHIOFF

ECHO

BAND

9+30dB

PWR

5

7

TX

3

1SIG

ECHO TIME

TABLE OF CONTENTS

Page

Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Installation

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Mounting the Radio . . . . . . . . . . . . . . . . . . . . . . . 4

Ignition Noise Interference . . . . . . . . . . . . . . . . . . . . . . 5

Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Tuning the Antenna for Optimum SWR . . . . . . . . . . . . 6

External Speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Operation

Control Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

A. Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

B. Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Press-To-Talk Microphone . . . . . . . . . . . . . . . . . . . . . . 11

Operating Procedure to Receive . . . . . . . . . . . . . . . . . . 11

Operating Procedure to Transmit . . . . . . . . . . . . . . . . . 11

Alternate Microphones and Installation . . . . . . . . . . . . 12

Specifications

GENERAL

Frequency Range 28.065 to 28.505 MHz
Frequency Control Phase Lock Loop (PLL) synthesizer.
Frequency Tolerance 0.005%
Frequency Stability 0.001%
Operating Temperature
Range

-30 °C to +50 °C.

Microphone Plug-in dynamic; with push-to-talk switch and

coiled cord.

Input Voltage

Current

13.8V DC nominal, 15.9V max, 11.7V min.
(Positive or negative ground).

Transmit: AM/FM Hi Power _ 10A.
Receiver: Squelched, _ 0.3A.

Maximum Audio output, _ 0.7A.
Size 2-3/8” (H) x 7-7/8” (W) x 9-1/4” (D).
Weight 5.0 1bs.
Antenna Connector UHF, SO239
Meter Illuminated; indicates relative output power,

received signal strength.

TRANSMITTER

Power output AM/FM, - Selectable 10W/5W/2W

AM Peak Power - 50 Watts.

Modulation High-and low-level Class B, Amplitude

Modulation: AM. Variable capacitance

Frequency Modulation: FM.
Spurious Emissions 60 dB
Frequency Response AM and FM: 450 to 2500 Hz.
Output Impedance 50 ohms, unbalanced
Output Indicators Meter-

shows relative RF output power.

Transmit LED glows red when transmitter is

in operation.

- 2 -

- 1 -

RECEIVER

Sensitivity

AM: 0.5 µV for 10 dB (S+N)/N at greater than
½ -watt of audio output.
FM: 1.0 µV for 20 dB (S+N)/N at greater than

½-watt of audio output.
Selectivity AM/FM: 6 dB @ 3 KHz, 50 dB @ 9 KHz.
Image Rejection More than 65 dB.
IF Frequency AM/FM: 10.695 MHz 1st IF, 455 KHz 2nd

IF
Adjacent-Channel
Rejection

60 dB AM

RF Gain Control 45 dB adjustable for optimum signal

reception.
Automatic Gain Control
(AGC)

Less than 10 dB change in audio output for

inputs from 10 to 100,000mV.
Squelch

Adjustable; threshold less than 0.5 µV.
ANL Switchable
Noise Blanker RF type
Audio Output Power 4 watts into 8 ohms.
Frequency Response 300 to 2800 Hz.
Built-in Speaker 8 ohms, round.
External Speaker (Not
Supplied)

8 ohms; disables internal speaker when

connected.

- 3 -

Installation

LOCATION

Plan the location of the transceiver and microphone bracket before starting the
installation. Select a location that is convenient for operation and does not interfere
with the driver or passengers in the vehicles. In automobiles, the transceiver is
usually mounted below the dash panel, with the microphone bracket beside it.

MOUNTING THE RADIO

Your transceiver is supplied with a universal mounting bracket. When
mounting the bracket and radio to your car, make sure it is mechanically strong.
Also provide a good electrical connection to the chassis of the vehicle. Proceed as
follows to mount the transceiver:

1. After you have determined the most convenient location in your vehicle, hold

the transceiver with mounting bracket in the exact location desired. If nothing
will interfere with mounting it in the desired position, remove the mounting
bolts. Before drilling the holes, make sure nothing will interfere with the
installation of the mounting bolts.

2. Connect the antenna coax connector to the standard antenna connector on the

rear panel of the radio. Most antennas are terminated with a type PL-259
connector.

3. Connect the red DC power input wire (with the fuse) to +13.8V DC. This wire

extends from the rear panel. In automatic installation, +13.8V DC is usually
obtained from the accessory contact on the ignition switch. This prevents the
set being left on accidentally when the driver leaves the car and also permits
operating the unit without the engine running. Locate the accessory contact on
most ignition switches by tracing the power wire from the AM broadcast
receiver in the car.

4. Connect the black lead to –13.8V DC. This is usually the chassis of the car.

Any convenient location with good electrical contact (remove paint) may be
used.

5. Mount the microphone bracket on the right side of the transceiver or near the

transceiver, using two screws supplied. When mounting in an automobile,
place the bracket under the dash so the microphone is readily accessible.

- 4 -

-3-

-4-