Acom 1500 User Manual
Hf + 6m installation, operation and maintenance
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Summary of Contents for Acom ACOM 1500
- Page 1 ACOM 1500 HF + 6m Linear Amplifier User's Manual Installation, Operation and Maintenance OUTSTANDING HF POWER PRODUCTS August 2021...
- Page 2 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier This manual is for electronic distribution mainly. If you have it on paper and you no longer need it, please, recycle it! The latest versions of our User's Manuals are available at www.acom-bg.com...
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Page 3: About Documentation
ACOM products and services. Further, this User's Manual is provided AS IS and ACOM shall not be liable for possible errors contained herein. - Page 4 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier Title of Documentation ACOM 1500 HF + 6 m Linear Amplifier User's Manual Installation, Operation and Maintenance Type of Documentation User's Manual Purpose of Documentation This manual explains Installation, Operation and Maintenance of the ACOM 1500 HF + 6 m Linear Amplifier.
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Page 5: Table Of Contents
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier Contents ABOUT DOCUMENTATION ..........................3 GENERAL INFORMATION ........................... 7 1.1. Introduction and Description ......................7 1.2. Owner Assistance ..........................8 1.3. Equipment Supplied ........................8 1.4. Features ............................8 1.5. - Page 6 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 6.3. Fuse Replacement ......................... 35 6.4. Tube Replacement ........................37 6.5. Simplified Schematic Diagram ....................... 38 6.6. Troubleshooting ..........................40 SPECIFICATIONS ............................42 7.1. Parameters ............................ 42 7.2. Functions ............................44 7.3.
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Page 7: General Information
Congratulations on purchasing one of the finest HF amplifiers in the world today. ACOM is pleased that you have chosen one of our products, and we will endeavor to provide you with the information and support you need to enjoy your purchase for many years. -
Page 8: Owner Assistance
If assistance is needed, you should contact your local dealer first. If necessary, your dealer will contact ACOM for additional guidance. If you still have an issue you need to discuss with one of ACOM's specialists, the contact information is as follows: ACOM Ltd. - Page 9 Signatures of the amplifier internal status are stored in a nonvolatile memory for 7 most recent auto protection trips. This information can be forwarded to your dealer for diagnostics. Using an EXCEL application (available from ACOM or your dealer free of charge) and a PC you can decode the signatures by yourself, too.
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Page 10: Safety Considerations, Explicit Definitions
1.5. Safety Considerations, Explicit Definitions The ACOM 1500 HF + 6 meters Linear Amplifier is a Safety Class I unit regarding protection against electric shock. The third grounding lead of its mains cord (colored yellow with two green stripes) and the ground... - Page 11 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier Information notes described below apply to this User's Manual: These notes highlight operating procedures or practices that may improve equipment reliability and/or personnel performance, or to emphasize a concept.
- Page 12 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier PRECAUTIONS: DANGER The amplifier works with high voltages up to 3000 V, which are LETHAL! For your safety, pull the amplifier power plug out of the mains wall outlet and WAIT AT LEAST 30 minutes EACH TIME BEFORE you remove the cover of the amplifier.
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Page 13: Installation
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 2. INSTALLATION 2.1. Unpacking and Initial Inspection Before you install your amplifier, thoroughly read this manual. First, carefully inspect the cardboard carton and its contents for physical damage. -
Page 14: Amplifier Location Selection
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 2.3. Amplifier Location Selection CAUTION The weight of the unit is about 26.5 kg (58.5 lbs.), which should preferably be handled by two persons. Position the amplifier near the place where it will be used. You will need an easy access to the command knobs and indicator's area, as well as to the rear panel cabling. -
Page 15: Connections
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 2.4. Connections Please, see Figure 2-1 Rear panel - Connections Connection to your station must be accomplished in the order described below, before you apply mains voltage to the amplifier. - Page 16 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier GND stud First, connect the wing-nut ground stud of the amplifier (on the rear panel, marked GND) to the station's grounding system (see , Pos. (a)). Figure 2-1 Rear panel - Connections...
- Page 17 Phono (RCA) connector to the KEY-OUT socket of the amplifier. ACOM 1500 will operate normally with KEY-OUT unconnected if your transceiver has no such input. Transceiver producers give different names to this input and they are for instance TX-INHIBIT, MUTE, LINEAR, etc.
- Page 18 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier Main fuses NOTICE Make sure you check whether the main fuses installed in your amplifier (see Figure 2-1 , Pos. (f)) correspond to your local mains nominal voltage and if...
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Page 19: Installation Of External Fan (Option)
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier Make sure the main Power Switch (marked "LINE", see , Pos. (2)), on the Figure 2-1 Rear panel - Connections rear panel is in OFF position and insert amplifier's mains plug into the wall outlet prepared for it. The amplifier remains switched off. -
Page 20: Power On, Controls And Indicators
, Pos. (2)). The LED indicator above the Figure 2-1 Rear panel - Connections POWER button (located on the front panel) must light red and "ACOM 1500" will appear on the display (see Figure 3-1 Front panel - Display and Controls... -
Page 21: Figure 3-2 Information Screens And Control Functions Structure
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier If the characters on the fluorescent display (VFD type - obsolete since 2015) are dim, please, see Section (not operative in units furnished with 5.1 Display Brightness Control OLED display). - Page 22 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier You can proceed in one of two directions: You can use the OFF LINE information screens and control functions. They refer to the auto-protection signatures list, Display brightness control, as well as the AUTO-OPERATE feature and Antenna assignment.
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Page 23: Operation
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 4. OPERATION Operation of the amplifier is simplified due to the TRI (True Resistance Indicator) tuning aid, AUTO- OPERATE function, and Automatic Protection System, so you will be able to begin using the amplifier immediately after the installation. -
Page 24: Changing Operate And Standby Modes
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier When you intend to have a short operating break, it is better to leave the amplifier in STANDBY mode instead of turning it off. Tube life is shortened by repeatedly turning on and off the tube heater supply. -
Page 25: Antenna Change
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 4.3. Antenna Change By pressing the ANT button, the amplifier output can be switched between three antenna outputs. The three lights above the button indicate the current antenna selection. - Page 26 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier Note also that the real OUTPUT POWER presented to the load (the antenna and transmission line) is equal to the difference between the FORWARD and REFLECTED power readings. For instance, with a 2.4:1 SWR load, readings of 1500 W and 250 W FORWARD POWER and REFLECTED POWER respectively, the real OUTPUT POWER is 1250 W.
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Page 27: Table 4-1 Approximate Tuning Presets
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier NOTICE Do not switch the ANTENNA or BAND switch knob while tuning or transmitting with the amplifier! Hot switching will eventually destroy the BAND switch, not covered by the... -
Page 28: Figure 4-1 Using Tri Tuning Aid
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier By pressing repeatedly either PREV or NEXT button (whichever is nearest), until you reach • the TRI scale. This will not insert the attenuator, so you will have to use less than 20 W drive (unless the amplifier is nearly correctly tuned), otherwise the next step would be executed automatically;... -
Page 29: Continuous Carrier Modes
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier If, for some reason, matching cannot be accomplished successfully, check BAND switch position and proper antenna selection. Then check the antenna SWR at the same drive frequency. Tuning hints While turning the knobs, you will note that both tunings would be virtually independent. -
Page 30: On Line Information Screens And Control Functions
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 4.6. ON LINE Information Screens and Control Functions Besides the Warming Up and TRI (described above in Sections 4.1 Turning ON and OFF ), you have 12 more Information screens available. They are as follows: 4.4 Tuning... - Page 31 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier Second degree of protection - SOFT FAULT The Second Degree of protection is a trip in STANDBY mode (SOFT FAULT). You will get an appropriate message, for instance **GRID CURRENT**. All SOFT FAULT messages are marked with two asterisks on both screen edges.
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Page 32: Off Line Mode
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 5. OFF LINE MODE There are two control functions and 14 information screens available in this state of the amplifier. You can enable/disable the AUTO-OPERATE feature, and assign the antenna outputs. You can also list the auto-protection signatures. -
Page 33: Antenna Output Assignment
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 5.3. Antenna Output Assignment NOTICE If there is no antenna connected to an antenna output then the output should be disabled. This will make the switching between two available antennas easier and, more important, it will prevent potentially damaging no-load transmissions. -
Page 34: Maintenance
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 6. MAINTENANCE DANGER Both the mains voltage and the high voltages up to 3000 V inside the amplifier are LETHAL! For your safety, pull the amplifier power plug out of the mains wall outlet and WAIT AT LEAST 30 minutes EACH TIME BEFORE you remove the cover of the amplifier. -
Page 35: Cleaning
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 6.2. Cleaning CAUTION Do not use any solvents for cleaning. They may be dangerous to you and damage amplifier surfaces, paint and plastic components. Do not open the amplifier. Cleaning of the amplifier outer surface can be done with a piece of soft cotton cloth lightly moistened with clean water. - Page 36 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier If, after Primary Mains Fuses replacement, the device does not operate normally, we recommend repair, performed only by a trained service technician. Contact your ACOM dealer for assistance (see Section 1.2 Owner Assistance...
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Page 37: Tube Replacement
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 6.4. Tube Replacement A single 4CX1000A/8168 ceramic and metal tetrode is employed in the amplifier. DANGER Tube replacement is a complex and potentially dangerous operation that involves adjustment of the plate idling current and is Life-threatening! For this reason, we recommend this work be carried out only by a trained service technician. -
Page 38: Simplified Schematic Diagram
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 6.5. Simplified Schematic Diagram Please, see Figure 6-1 Simplified schematic diagram The 4CX1000A/8168 ceramic and metal radial beam tetrode (V1) is grid-driven. It can dissipate up to 1000 W when forced air cooled and is specifically designed for class AB1 RF linear amplifiers. -
Page 39: Figure 6-1 Simplified Schematic Diagram
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier Figure 6-1 Simplified schematic diagram Figure 6-1 Simplified schematic diagram August 2021 S e c t i o n MAINTENANCE | Page 39 of 52... -
Page 40: Troubleshooting
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 6.6. Troubleshooting Please, see Section for the method of reading the auto-protection 5.4 Reading Auto-protection Signatures signatures. You can decode them using the information below. The signatures are structured in two lines, three groups by six symbols for every one event of auto protection. - Page 41 Detailed electrical schematic diagrams are available from ACOM or from your dealer on request. Additional information is available from ACOM or from your dealer on how to interpret these values. Using an Excel application available from ACOM or your dealer free of charge, and a PC, you can decode these signatures.
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Page 42: Specifications
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 7. SPECIFICATIONS 7.1. Parameters Frequency Coverage All amateur bands in the 1.8-54 MHz frequency range; • Extensions and/or changes on request; • Power Output 1500 W PEP or 1200 W continuous carrier, no mode limit;... - Page 43 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier RF Gain 13 dB typically, frequency response less than 1 dB (60-85 W drive power for rated • output); Mains Power Supply Voltage 85-132 VAC / 170-264 VAC (100, 110, 120, 200, 210, 220, 230 & 240 V nominal taps, •...
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Page 44: Functions
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 7.2. Functions Antenna Impedance Matching Process Plate-load True Resistance Indicator (TRI) aided; • Antenna Outputs Three antenna outputs selectable by a button on the front panel; • T/R System QSK operation with quiet, built-in vacuum RF antenna relay;... -
Page 45: Storage And Shipment
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 7.3. Storage and Shipment 7.3.1. Storage Environment The amplifier may be kept packed in a dry, ventilated and unheated location (with no chemically active substances such as acids or alkalis) within the following environment ranges:... -
Page 46: Information On Disposing And Recycling Of Old Electrical And Electronic Equipment
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier 7.4. Information on Disposing and Recycling of Old Electrical and Electronic Equipment The information in this section is applicable for countries that have adopted separate waste collection systems. -
Page 47: Notes
User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier NOTES ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. August 2021 S e c t i o n NOTES | Page 47 of 52... - Page 48 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. Page 48 of 52 | S e c t i o n NOTES...
- Page 49 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. August 2021 S e c t i o n NOTES | Page 49 of 52...
- Page 50 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. Page 50 of 52 | S e c t i o n NOTES...
- Page 51 User's Manual | ACOM 1500 | HF + 6 m Linear Amplifier This manual is for electronic distribution mainly. If you have it on paper and you no longer need it, please, recycle it! The latest versions of our User's Manuals are available at www.acom-bg.com...
- Page 52 о о support@acom-bg.com ACOM and the ACOM logo are registered trademarks of ACOM Ltd. in many countries, www.acom-bg.com including the EU and United States. I The used images are illustrative only. Subject to change without notice. I Printed in Bulgaria.
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