AMERITRON ALS-500M Manuale delle Istruzioni

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AMERITRON ALS-500M
INSTRUCTION MANUAL
116 Willow Road
Starkville, MS 39759 USA
662-323-8211
Version 2A
Printed in U.S.A.
500 WATT
SOLID STATE MOBILE AMPLIFIER
PLEASE READ THIS MANUAL BEFORE OPERATING THIS EQUIPMENT !
The Ameritron ALS-500M is a 500 watt PEP output solid state linear amplifier using rugged, conservatively rated bipolar RF
devices in the power output section. The ALS-500M operates at full power with continuous frequency coverage from 1.5
through 21.6 MHz. This amplifier requires no tuning adjustments. Broad band 5 pole filter provide output harmonic
suppression in excess of 60 dB for all frequencies above 8 MHz, and more than 70 dB on all TV channels. Export
modifications are available to extend operation to 30 MHz with a copy of a valid amateur license.
The ALS-500M uses two pairs of 2SC2879 transistors operating at 13.8 volts nominal in a push-pull output configuration.
High quality RF components combine with load fault sensing, temperature protection, and one switch frequency selection to
make this one of the simplest and easiest to operate amplifiers today. The ALS-500M operates on 13.8 Vdc electrical systems
and draws a peak current of 80 amperes at full output.
WARNING: THIS AMPLIFIER IS DESIGNED FOR USE IN VEHICLES
WITH NEGATIVE GROUND 12 VOLT ELECTRICAL SYSTEMS ONLY.
The battery should be maintained between 13.8 and 16.5 volts dc.
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Sommario

Pagina 1 - AMERITRON ALS-500M

AMERITRON ALS-500MINSTRUCTION MANUAL116 Willow RoadStarkville, MS 39759 USA662-323-8211Version 2APrinted in U.S.A.500 WATT SOLID STATE MOBILE AMPLI

Pagina 2 - TABLE OF CONTENTS

ALS-500M Instruction Manual 8

Pagina 3 - ALS-500M FEATURES

ALS-500M Instruction Manual 9 INTERCONNECTIONS 1. The negative battery lead must be disconnected from the battery post. 2. The positive

Pagina 4 - GENERAL INFORMATION

ALS-500M Instruction Manual 10 11. Plug the female multi-pin power connector onto the multi-pin male connector on the rear of the ALS-500M c

Pagina 5

ALS-500M Instruction Manual 11 ALS-500M PARTS LIST Combiner Board Parts List Designator Description Part Number C101,102 Capacitor, Trim

Pagina 6 - INSTALLATION

ALS-500M Instruction Manual 12 Power Amplifier Board Parts List Designator Description Part Number C225,226 Capacitor, DM19, 500v, 360 pF

Pagina 7

ALS-500M Instruction Manual 13

Pagina 8 - GROUNDING

ALS-500M Instruction Manual 14 Output Filter Board Designator Description Part Number C301,308 not used C302,307 *Capacitor, SM-19, 100

Pagina 9

ALS-500M Instruction Manual 15

Pagina 10

ALS-500M Instruction Manual 16 Bias Board Parts List Designator Description Part Number C401,406-421, Capacitor, Ceramic Disc, 50v, .1 uF

Pagina 11 - INTERCONNECTIONS

ALS-500M Instruction Manual 17

Pagina 12 - OPERATION

ALS-500M Instruction Manual i TABLE OF CONTENTS ALS-500M Features...

Pagina 13 - ALS-500M PARTS LIST

ALS-500M Instruction Manual 18 ALS-500M Chassis Components Designator Description Part Number J1, 2 Jack, SO-239 610-2126 J3 Jack, RCA

Pagina 14

ALS-500M Instruction Manual 1 ALS-500M FEATURES 1. Rugged devices. The ALS-500M uses four rugged linear RF power devices. 2. Fast war

Pagina 15

ALS-500M Instruction Manual 2 GENERAL INFORMATION Load Fault Circuit The ALS-500M features a load fault trip circuit that bypasses the ampl

Pagina 16

ALS-500M Instruction Manual 3 Supply Voltage Low voltage solid state amplifiers are very sensitive to power supply voltage changes. For maxi

Pagina 17

ALS-500M Instruction Manual 4 Written assistance is also available. Due to time delays in processing mail, please allow a minimum of three

Pagina 18

ALS-500M Instruction Manual 5 AWG (single conductor) Voltage Drop at 40 amps Maximum Length For Full Performance 10 gauge 0.04 V/ft 5 f

Pagina 19

ALS-500M Instruction Manual 6 batteries should be number 6 AWG automotive type cable. The negative return can usually be made through the c

Pagina 20

ALS-500M Instruction Manual 7 insulating body mounts must have flexible strapping connected between the body and the frame at all four corne

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