AMERITRON ALS-1406/S Instruction Manual Download Page 1

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AMERITRON ALS-1406/S

1200 WATT 160-6 Meter NO TUNE

LDMOS-FET AMPLIFIER

INSTRUCTION MANUAL

WARNING!

NEVER APPLY POWER TO THIS AMPLIFIER WITH THE COVER REMOVED!

CONTACT WITH THE POWER SUPPLY VOLTAGES IN THIS AMPLIFIER CAN BE FATAL!

PLEASE READ THIS MANUAL BEFORE OPERATING THIS EQUIPMENT!

Factory

116 Willow Road

Starkville, MS 39759 USA

662-323-8211

Version 0
Printed in the USA

Summary of Contents for ALS-1406/S

Page 1: ...UAL WARNING NEVER APPLY POWER TO THIS AMPLIFIER WITH THE COVER REMOVED CONTACT WITH THE POWER SUPPLY VOLTAGES IN THIS AMPLIFIER CAN BE FATAL PLEASE READ THIS MANUAL BEFORE OPERATING THIS EQUIPMENT Fac...

Page 2: ...12 Coaxial Line Isolators 13 INTERCONNECTION WIRING 14 FRONT PANEL CONTROLS 15 AMPLIFIER REAR PANEL 16 INTERCONNECTIONS 17 Optional Radio Interface Cables 18 OPERATION 19 MARS or CAP Operation 19 Init...

Page 3: ...3 22 2021 DISCLAIMER Information in this manual is designed for user purposes only and is not intended to supersede information contained in customer regulations technical manuals documents positional...

Page 4: ...metering with PA unbalance protection Reflected power protection Thermal overload protection Bandswitch error protection Easy to understand front panel LED indicators for rapid fault error diagnosis...

Page 5: ...be resolved Installation and Operation Placement WARNING Do not block ventilation holes Do not expose to water or external heat This unit is two components a power supply and an amplifier section The...

Page 6: ...onnectors Use good cables with quality UHF male PL259 connectors The output cable must safely handle at least 1200 watts 2 Look at the connectors The amplifier s female connectors have notches on the...

Page 7: ...stem 50 ohm SWR is as low as possible As SWR increases from 1 1 either heat or distortion will increase 2 Be sure your antenna system including any lightning protection devices will safely handle high...

Page 8: ...ace cable 2 Set the exciter or transceiver to the desired power below 100 watts 3 Place the standby switch in the operate position 4 Transmit and watching Forward Power metering be sure power does not...

Page 9: ...from independent 50 volt modules giving a total dc supply rating of 2500 watts average power and 3000 watts peak power to the power amplifier modules Power supply to amplifier interconnections are th...

Page 10: ...ull operation of linear devices followed by high quality 5 pole low pass filters Many amplifiers use inexpensive ceramic disc or mica capacitors Lead inductance of mica or disc capacitors reduces high...

Page 11: ...s clearance is normally adequate for full ventilation Keep any papers or loose objects that might impede airflow away from the air inlets and outlets Locate the amplifier and power supply away from se...

Page 12: ...rance Isolated ground rods or systems connected to conductors entering a dwelling increase the chances of damage from storms and increase fire hazard and shock risk RF grounds generally belong at the...

Page 13: ...ing a system problem at the desk it is much better to correct defects at the source Coaxial Line Isolators Never install coaxial line isolators between desktop radio equipment The goal of every operat...

Page 14: ...14 Interconnection Wiring Figure 1 Basic Interconnect Figure 2 Basic Interconnect with Radio Interface Cable Figure 3 Interconnect with Tuner and no KEY LOOP Figure 4 Interconnect using KEY LOOP...

Page 15: ...overload Note The right hand meter s left scale arc fig 5 ref 2 continuously indicates forward peak envelope power PEP output directly in kilowatts It is 100 watts or 0 1 kW per meter scale picket PEP...

Page 16: ...w 2 volts to transmit KEY LOOP Output for remote tuner use KEY LOOP Switch Switch to turn on and off the KEY LOOP function GND Connect to station ground bus if available This connection is primarily f...

Page 17: ...ntenna matching system or antenna tuner must connect to this port 5 Connect the IN connector to your transceiver Do not install any active antenna matching devices on this port In general the shortest...

Page 18: ...h ACC 2 7 Pin DIN DB DB7DK Kenwood with DB9 except TS 480 SET Baud RATE 9600 TS 590 menu 53 HF 54 50 MHz 2 TS 570 menu 39 HF and 40 50 MHz 2 TS 990 s menu 11 HF and menu 12 50 MHz set to 3 active high...

Page 19: ...Damage to the filter board can occur Caution This amplifier has an FCC mandated automatic disconnect and other features preventing 27 MHz operations There is no available circuitry or control provisi...

Page 20: ...high power load connected 8 Change the meter switch fig 5 ref 7 to REF In this position the multimeter indicates reflected power 9 With no modulation in the FM AM RTTY or CW mode and the amplifier st...

Page 21: ...essive ALC loop gain ALC attack bounce shows on a steady carrier such as RTTY CW or FM as a high initial peak power reading followed by a deep null The deep null is followed by a slow settling to the...

Page 22: ...mittent antenna or feed line connection SWR PA Band Wrong filter Exciter or amplifier on incompatible band filter failure PA TX PA FET too hot Excessive power for duty cycle or SWR lack of proper airf...

Page 23: ...1 9 4 3 4 7 10 4 6 6 14 8 6 2 7 6 0 6 6 14 7 9 3 20 9 9 3 8 8 5 9 3 20 8 13 2 29 5 20M 14 350 12 5 4 12 0 13 2 29 4 18 6 41 6 0 1 7 3 8 4 2 9 4 5 9 13 2 3 2 4 5 4 5 9 13 2 8 4 18 7 6 3 4 7 6 8 3 18 7...

Page 24: ...150 8 9 6 4 3 3 21 250 8 9 8 3 8 10 1 3 24 950 7 9 9 4 4 3 28 500 7 9 7 6 1 10 1 3 50 125 8 10 5 7 1 13 7 3 Table 6 Approximate Antenna Gain for Some Common Antennas Controlled Distance exposure in Ta...

Page 25: ...lugged before removing the cover from the power supply If the power supplies are changed to 120 VAC do not plug into a 240 VAC source They will fail 50 ALS600SPS 1B Power Supply Module 120V 240V Jumpe...

Page 26: ...rs For 220 240VAC operation default setting place the jumper on the 220VAC terminal For 110 120VAC operation place the jumper on the 110VAC terminal Do not change any other jumpers on the board Do thi...

Page 27: ......

Page 28: ...Correct maintenance repair and use are important to obtain proper performance from this product Therefore carefully read the Instruction Manual This warranty does not apply to any defect that Ameritro...

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