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- Page 1 ACOM 06AT 1.8-54 MHz Automatic Antenna Tuner & Switch User's Manual Installation, Operation and Maintenance OUTSTANDING HF POWER PRODUCTS October 2022...
- Page 2 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 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 06AT | Automatic Antenna Tuner and Switch Title of Documentation ACOM 06AT Automatic Antenna Tuner and Switch 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 06AT Automatic Antenna Tuner and Switch.
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Page 5: Table Of Contents
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch Contents ABOUT DOCUMENTATION ..........................3 GENERAL INFORMATION ........................... 9 1.1. Introduction and Description ......................9 1.2. Product History and Documentation Validity ................10 1.3. Owner Assistance .......................... 11 1.4. Equipment Supplied ........................11 1.5. - Page 6 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 4.1.1. SHARP ..........................31 4.1.2. REGULAR .......................... 31 4.1.3. WIDE ..........................31 4.1.4. FIXED ..........................32 4.2. Tuner Assignment and Unassignment ..................32 4.3. Tuning Modes: FULL, QUICK and BYPASS ..................32 4.4.
- Page 7 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 6.4.1. Voltage and Current at the Antenna Output ..............47 6.4.2. Reflected Power, Forward Power and SWR at Antenna Output ........47 6.4.3. Power Supply Voltage and Temperature in the Tuner Unit ..........47 6.4.4.
- Page 8 Figure 2-1 | Packaging carton (outside view) ....................19 Figure 2-2 | ACOM 06AT packaged in a cardboard box .................. 20 Figure 2-3 | ACOM 06AT antenna tuner and switch (shown near 700S amplifier) ........21 Figure 2-4 | Tuner rear view with connectors ....................22 Figure 3-1 | ACOM 700S amplifier screen with tuner installed ..............
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Page 9: General Information
Congratulations on purchasing one of the finest antenna tuners 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 10: Product History And Documentation Validity
1.2. Product History and Documentation Validity The ACOM 06AT antenna tuner serial production started in June 2022. This manual refers to the ACOM 06AT antenna tuner and describes the operating possibilities of all tuners produced till the publishing date of this manual. -
Page 11: 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 12: Features
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 1.5. Features Easy set-up of user tuning presets • For a CAT transceiver a single press of the TUNE button on the amplifier front panel is all you need. - Page 13 Improves harmonic suppression - the matching network is a low-pass L filter. Saves space on the operating position • ACOM 06AT can be located up to 100 m (330 ft) away from the shack (in another room, but not outdoor). Integrated antenna switch •...
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Page 14: Safety Considerations, Explicit Definitions
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 1.6. Safety Considerations, Explicit Definitions The ACOM 06AT is designed to meet international safety standards and complies with CE safety and electromagnetic compatibility requirements, as well as FCC regulations. - Page 15 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 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 16 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch PRECAUTIONS: DANGER For details about lightning protection see at the end of APPENDIX 1 | Lightning Protection this manual. DANGER For safe tuner operation, the tuner's grounding terminal labeled GROUND should be...
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Page 17: Lightning Protection
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 1.6.1. Lightning protection DANGER For details about lightning protection see at the end of APPENDIX 1 | Lightning Protection this manual. The tuner's terminal labeled GROUND should be connected through a low-impedance connection with a cross section of no less than 20 sq. -
Page 18: Electric Safety Precautions
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 1.6.2. Electric Safety Precautions WARNING The electronics inside the tuner operate under high direct-current voltage up to 200 V, which is fatal! Never allow anyone, especially children, to insert any object into box holes - this may cause electric shock. -
Page 19: Installation
2.1. Unpacking and Initial Inspection Before you install your antenna tuner, thoroughly read this manual. First, carefully inspect the cardboard carton and its content for physical damage. ACOM ships antenna tuners in highly protected containers, but it cannot assure that mistreatment by shippers will not occur. -
Page 20: Figure 2-2 | Acom 06At Packaged In A Cardboard Box
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch Take out the tuner using handles of the middle secure element (see Figure 2-2 | ACOM 06AT • , Pos. 4); packaged in a cardboard box Take out the tuner (Pos. 7) from the middle secure element and remove bottom and rear flat •... -
Page 21: Tuner Location Selection
2.3. Power Supply Voltage The tuner is powered by direct-current voltage +26 VDC +10/-15%, supplied through the coaxial cable from the ACOM amplifier RF OUTPUT to the RF input of the tuner, labeled 50Ω RF +26 VDC POWER & CONTROL. NOTICE To avoid any damage (not covered by the warranty), never connect the input jack of the tuner, labeled 50Ω... -
Page 22: Installation And Connections
Make sure the device is switched off before connecting or disconnecting any cable. NOTICE When you use ACOM 06AT with ACOM 2020S amplifier do not use antennas with SWR above 2.5! Always observe section 8.1.3 Maximum Allowed Input Power Check if the antenna cables and grounding system of your radio station are installed as described in Section 1.6.1 Lightning protection... -
Page 23: Grounding, Additional Information
Figure 2-4 | Tuner rear view with connectors, Pos. 3) labeled 50Ω RF +26 VDC POWER & CONTROL to the ACOM transistor amplifier's output labeled RF OUTPUT. Besides RF power, the tuner will be supplied with DC power from the amplifier (+26 VDC with consumption up to 25 W), and bidirectional control data (60 kHz FSK), all combined on the same cable. -
Page 24: Radio Frequency Grounding Or Counterpoise
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch To ensure that your installation complies with the requirements consult a qualified electrician to find out if simultaneous grounding and neutralizing, according to the recommendations of Section 1.6 Safety... - Page 25 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch Assign the antenna numbers (1 to 4) in advance. After verifying that there is no dangerous voltage, connect, one at a time, all available antenna cables to the respective antenna sockets, ANTENNA 1 to ANTENNA 4 of the tuner, without fastening the connector rings at first, so that the cables may still be axially turned and adjusted.
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Page 26: Getting Started
Connect the power cable of the amplifier to the wall mains socket and turn it on from the master power ON/OFF switch on the back panel and from the POWER button on the front panel. The ACOM 06AT tuner has no power switch. It is turned ON and OFF together with the ACOM amplifier. -
Page 27: Indication, Controls And Menus
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 3.2. Indication, controls and menus 3.2.1. Tuner Information Area on the Amplifier Screen After the operator specifies in the USER PREFERENCES that a tuner is installed, the amplifier indication... -
Page 28: Segment Up/Dwn Buttons (Second Function - Band)
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch When a tuner is assigned (see Section 4.2 Tuner Assignment and Unassignment - The information area above the buttons is reserved for messages concerning the tuner; - The BAND buttons (up and down) become SEGMENT;... -
Page 29: Аnt Button (Change Of Antennas)
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 3.2.4. АNT Button (Change of Antennas) Antenna outputs are switched automatically, along with the change of frequency band to the values assigned to bands by the operator in the table of the ANTENNA ASSIGNMENTS menu (see Section 6.1 ANTENNA... -
Page 30: Starting Up And Main Functions
RF burns and injury. NOTICE Never exceed tuner specifications! Do not transmit with a high SWR! When you use ACOM 06AT with ACOM 2020S amplifier do not use antennas with SWR above 2.5! Always observe section 8.1.3 Maximum Allowed Input Power 4.1. -
Page 31: Sharp
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch The higher the degree of physical reduction of the antenna size, compared to its full-size version, the steeper, more frequency-dependent, narrow-band and unstable its settings are, in comparison with, e.g., the settings of a regular dipole. -
Page 32: Fixed
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 4.1.4. FIXED An extreme reduction of the physical dimensions of antennas, such as for a loop of 2-3 m diameter for 80 m band, would probably limit the capability to operate on a single fixed frequency only. If this is the case, select FIXED (for fixed frequencies) type. -
Page 33: Quick Tuning And Non-Volatile Memory
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 4.4. Quick Tuning and Non-Volatile Memory Quick tuning is performed automatically at each change of frequency segment, band and/or antenna. The tuner checks if there is a stored tuning setting for the desired frequency and antenna in the non-volatile memory. -
Page 34: Operation In Bypass Mode
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch NOTICE If the conditions at the antenna have changed since the time the tuning was memorized, using outdated tuning settings may lead to a high SWR at the amplifier end. We recommend updating the tuning settings with the TUNE button in this case. -
Page 35: Specific Of Operation In Transmission Mode
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch - Manually - by pressing the SEGMENT or SEGMENT button (unless there is an active CAT) or by changing the antenna with the ANT button (only if more than one antenna was declared for the operating frequency (see section ). -
Page 36: Basic Full Tuning Cycle
This is typically done with a residual SWR allowance under 1.3:1 in the ACOM 06AT. A full tuning cycle is the "seek and find" process for a combination of tuner relays that leads to this impedance matching condition. -
Page 37: Operator Actions For A Full Tuning Cycle
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch This way, at the end of the matching cycle, the necessary combination of relays to achieve the matching of the connected antenna impedance to 50 Ohm is found. At the end of the cycle, this relay combination is stored in the tuner nonvolatile memory. - Page 38 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch - Adjust the RF power of the transceiver to approximately 25 W (unless previously adjusted). You may apply more power to compensate RF losses if the coaxial cable to the tuner is too long.
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Page 39: Advanced Functions And Options
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 6. ADVANCED FUNCTIONS AND OPTIONS 6.1. ANTENNA ASSIGNMENT Menu In this menu, the operator can specify the name, type (degree / rate of selectivity) for each antenna and frequency bands to be used with it. -
Page 40: Editing Antenna Names
(FW Ver: ...) of the Control board of the tuner and the number of working hours - the hours, during which the tuner was powered up (Working hours: nnn h). Please note that "Model" info will be shown as "04AT". This is normal. Both ACOM tuner models 04AT and 06AT use the same Control board. -
Page 41: Erasing The Whole Non-Volatile Memory
The tuner data will pass through the amplifier and be available at its serial (RS-232) port to a computer. Please, use the "ACOM Terminal S" software, distributed by ACOM free of charge, for the dump. Downloaded backup files can be stored and... -
Page 42: Figure 6-1 | Acom Terminal S Screenshot
SELECT button to confirm the selection; A new DOWNLOAD window will open in ACOM Terminal S. In it click on the BROWSE button and select location and name for saving the newly generated dump file on your computer; Click the SAVE button. The terminal program will then return to the previous window, in which the DOWNLOAD button should be clicked to start the download of the dump file;... -
Page 43: Restoring (Loading) The Non-Volatile Memory From A File - Memory Load From File
The data is input through the serial (RS-232) channel of the amplifier, and transferred by amplifier control to the tuner, which in turn writes it in its own memory. Please use the ACOM TERMINAL S software, distributed by ACOM free of charge. -
Page 44: Aging And Refreshing Of Settings
SELECT button to confirm the selection; A new UPLOAD window will open in ACOM Terminal S. In it, click on the BROWSE button and from the drop-down menu in the bottom right corner select location and name of an existing backup file ".bkp"... -
Page 45: Overview Of Tuning Settings And Resources Used
Tuning age in hours ("- - - -" means "no tuning"). ACOM 06AT uses an L-shape matching network configuration. The abbreviations used below mean: is the capacitor connected in parallel to the transmitter (tuner input); is the inductance connected between transmitter and antenna;... -
Page 46: Measurements In The Tuner - Atu Measure Menu
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch The ANTENNA or ANTENNA buttons can be used to review the resource table for another antenna in the same band. SEGMENT or SEGMENT buttons are used to select (highlight) a different frequency segment in the table. -
Page 47: Voltage And Current At The Antenna Output
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 6.4.1. Voltage and Current at the Antenna Output The antenna voltage and current are indicated in root-mean-square (rms) values. They should not exceed: ANTENNA VOLTAGE < 500 V (rms);... -
Page 48: Maintenance
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 7. MAINTENANCE The user IS NOT expected to perform any repairs, except replacing fuses (see Section 7.2 Fuse Replacement and repairing antennas or coaxial cables on the feeders. If needed, call your dealer’s service provider or the manufacturer directly (see Section 1.3 Owner Assistance... - Page 49 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch Fuse F1 specification: "F" type (fast-acting / quick-acting / fast blow / quick blow); • Rated for 2 A and 250 V. • Suitable fuses are: EATON Bussmann, PN: GMA-2-R (glass body cartridge);...
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Page 50: Block Diagram And Principle Of Operation
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 7.3. Block Diagram and Principle of Operation Please, see Figure 7-2 | Tuner Block Diagram The ACOM 06AT tuner consists of the following main assemblies: Input switch board; •... -
Page 51: Figure 7-2 | Tuner Block Diagram
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch Figure 7-2 | Tuner Block Diagram Figure 7-2 | Tuner Block Diagram October 2022 S e c t i o n MAINTENANCE | Page 51 of 70... - Page 52 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch During tuner operation (after tuning), in normal state of the relays KS1 and KS2, the input RF power is directly fed from the RF Input to the input of the L matching network.
- Page 53 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch The process of full tuning runs in a number of steps (see Section ) and at each 5.1 What a Full Tuning Cycle Does step the Control board enables and blocks the RF power through the MOSFET INPUT SWITCH mentioned above.
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Page 54: Troubleshooting - Monitoring The Antenna-Feeder Path Status
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 7.4. Troubleshooting - Monitoring the Antenna-feeder Path Status Using the ATU MEASURE function, you can evaluate the status of the antenna-feeder path and the coaxial cable from the amplifier to the tuner. - Page 55 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch If you get a COMMUNICATION TO ATU/ASEL FAILING message, then most probably the cable connection from the amplifier to the tuner is unstable. Check the cable DC resistance (see Section ).
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Page 56: Specifications
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 8. SPECIFICATIONS 8.1. Parameters 8.1.1. Operating Frequency Range Continuous from 1.8 to 30 and from 50 to 54 MHz, extensions and changes on request. 8.1.2. Minimum Range of the Matched Impedances (at Each of the Four Antenna Outputs) All impedances with SWR from 1:1 to 3:1 towards 50 Ohm, any phase angle, unbalanced input and output. -
Page 57: Antenna Outputs Characteristics, Antenna 1 To Antenna 4
• 8.1.9. Remote Control The remote control and indication from an amplifier of the ACOM transistor series is provided over the input RF coaxial cable of the tuner using a 60 kHz / 4800 bps bidirectional FSK modem. 8.1.10. Maximum Length of the Input Coaxial Cable The maximum length of the RF coaxial cable between the amplifier output and the tuner input (see Sections 8.1.4 RF Input Characteristics... -
Page 58: Operating Environment
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 8.1.12. Operating Environment Temperature range: -10 to +40 degrees Celsius (14 F to 104 • Relative air humidity: Up to 95% @ +35 degrees Celsius (95 • Height above sea level: Up to 3050 m (10000 ft) without output deterioration. -
Page 59: Evaluation Of The Resource Used
A single cable is required from the radio station to the tuner. Along with the RF power, the coaxial cable from the ACOM amplifier to the tuner combines also the DC power supply of +26 VDC and the 60 kHz FSK data for bidirectional control. -
Page 60: Regulatory Requirements
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 8.3. Regulatory Requirements European conformity CE mark (Conformitè Europëenne) This symbol explains that "CE" marked ACOM product meets the essential requirements of Directive 1999/5/EC of the European Parliament and of the Council of 9 March 1999 on radio equipment and telecommunications terminal equipment and the mutual recognition of their conformity . -
Page 61: Storage And Shipment
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 8.4. Storage and Shipment 8.4.1. Storage Environment The antenna tuner 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 62: Returning To The Service Provider
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 8.4.4. Returning to the Service Provider This document section contains the general information on packing and shipping an antenna tuner for diagnostics and repair. NOTICE Should it be necessary to ship the antenna tuner, use the original packing as described below. - Page 63 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch Basic shipping insurance is provided by the customer when sending in an antenna tuner - you can verify the amount covered by the shipping company by looking on their website.
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Page 64: Information On Disposing And Recycling Of Old Electrical And Electronic Equipment
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 8.5. 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. ACOM products cannot be disposed as household waste. -
Page 65: Appendix 1 | Lightning Protection
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch APPENDIX 1 | Lightning Protection Never underestimate the danger of lightning! Lightning may create dangerous current and voltage surges in antennas, antenna feeders, and the equipment connected to them, measured in tens and hundreds of thousands of Amperes and Volts, with steep (fast) rises (a few milliseconds) and a huge quantity of energy dispersed momentarily, comparable to, e.g., an explosion of hundreds of tons of dynamite, yet released in... - Page 66 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch E.g., a tree with a diameter of 30 cm or more can be split, exploded, broken or set on fire by a branch of the main channel of the lightning, while a standard metal lightning rod, taking the main strike of the lightning, survives, although it is much thinner than the tree.
- Page 67 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch All cables entering the building should only be laid out in one zone, low in building foundation, and the cable braids and grounding terminals of their pulse overvoltage limiters (surge...
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Page 68: Notes
User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch NOTES ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. ……………………………………………………………………………………………………………..…………………………………………………………………………………………………………………….. Page 68 of 70 | S e c t i o n NOTES... - Page 69 User's Manual | ACOM 06AT | Automatic Antenna Tuner and Switch 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 70 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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