Galaxy DX 29HP Owner's Manual

PRINTED IN MALAYSIA

PN:A412308CNA

DX 29HP

10 Meter Amateur Mobile Transceiver

OWNER’S MANUAL

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Operation

Control Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

A. Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

B. Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Press-To-Talk Microphone . . . . . . . . . . . . . . . . . . . . . . 10

Operating Procedure to Receive . . . . . . . . . . . . . . . . . . 10

Operating Procedure to Transmit . . . . . . . . . . . . . . . . . 10

Alternate Microphones and Installation . . . . . . . . . . . . 11

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .

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14

Specifications

GENERAL

Frequency Range 28.015 to 28.465 MHz
Frequency Control Phase Lock Loop (PLL) synthesizer.
Frequency Tolerance 0.005%
Frequency Stability 0.001%
Operating Temperature
Range
Microphone Plug-in dynamic; with push-to-talk switch and

Input Voltage

Current

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,

TRANSMITTER

Power output AM/FM,-Selectable

Modulation High-and low-level Class B, Amplitude

Spurious Emissions > -50 dB
Frequency Response AM and FM: 300 to 2500 Hz.
Output Impedance 50 ohms, unbalanced
Output Indicators Meter- shows relative RF output power.

-30 C to +50 C.

coiled cord.

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.

received signal strength.

LO 1W / HI 10W

Modulation: AM. Variable capacitance
Frequency Modulation: FM.

Transmit LED glows red when transmitter is
in operation.

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RECEIVER





t

d



Sensitivity

AM: 0.5

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

V 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 1

s

IF, 455 KHz 2

IF

Adjacent-Channel

50 dB AM

Rejection
RF Gain Control 45 dB adjustable for optimum signal

reception.

Automatic Gain Control
(AGC)
Squelch

Less than 10 dB change in audio output for
inputs from 10 to 100,000mV.
Adjustable; threshold less than 0.5

V.
ANL Switchable
Noise Blanker RF type
Audio Output Power 4 watts into 8 ohms.
Frequency Response 300 to 2500 Hz.
Built-in Speaker 8 ohms, round.
External Speaker (Not
Supplied)

8 ohms; disables internal speaker when
connected.

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Installation

LOCATION

Plan the location of the transceiver and microphone bracket before starting the
installation. Select a location that is convenient for operation and do es not interfere
with the driver or passengers in the vehicles. In automobiles, the transceiver is

n

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 su re 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.

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

2.

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.

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