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User's Manual | ACOM 2020S | 1.8-54 MHz Linear Power Amplifier  

Page  10 of 76  |  S e c t i o n   GENERAL INFORMATION 

June 2022 

 

1.2.

 

Product History and Documentation Validity 

 
The ACOM 2020S amplifier serial production started in April 2022. 
 
This manual refers to the ACOM 2020S amplifiers and describes the operating possibilities of all amplifiers 
produced till the publishing date of this manual. 
 
This manual is valid till a new manual is issued. 
 

Table 1-1 | Production versions history 

Production Version 

Release Date 

Notes 

04.2022 

Basic design; 

 

 

 

 

 

 

 

Table 1-1 | Production versions history 

 
 

1.3.

 

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. 
E-mail: 

[email protected]

 

Bulgaria  |  Bozhurishte 2227 
Sofia-Bozhurishte Industrial Park  |  6 Valeri Petrov Str. 
GPS coordinates:  42.748616

о

  |  23.209801

о

 

 
 

Summary of Contents for 2020S

Page 1: ...ACOM 2020S 1 8 54 MHz Linear Power Amplifier with Touch Screen Remote Control User s Manual Installation Operation and Maintenance June 2022 OUTSTANDING HF POWER PRODUCTS ...

Page 2: ...ifier Page 2 of 76 S e c t i o n ABOUT DOCUMENTATION June 2022 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 3: ...itions which thereby become invalid The cover images used in the manual are illustrative only We are continuously striving to improve our documentation but nobody is perfect And our documentation is not an exception of this rule Have you found any errors or would you like to suggest changes in our documentation Please help us by sending your suggestions to the following e mail address documentatio...

Page 4: ...pressly confirmed in the contract All rights are reserved with respect to the content of this manual and the availability of the product Copyrights 2022 ACOM Ltd Copying this document giving it to others and the use or communication of the contents thereof without express authority are forbidden Offenders will be held liable for infringement of any intellectual property of ACOM Ltd and all damages...

Page 5: ...Amplifier rear panel 18 2 4 2 Connections on RCU rear panel 22 2 5 Connecting to External Devices transceiver computer etc 24 3 FIRST POWER ON CONTROL SYSTEM AND INITIAL CHECK 28 3 1 Low Energy STANDBY Mode of the Power Supply 28 3 2 RCU Remote Control Unit 29 3 3 Initial Turning On 30 3 4 Basic Screen 30 3 5 Control System Buttons and Menus 33 3 6 Test Transmission 34 4 OPERATION 38 4 1 Change of...

Page 6: ... 57 7 4 Using the Fault Codes signatures for Diagnostics 58 7 5 Firmware 59 7 5 1 Firmware Versions 59 7 5 2 Prequistments 59 7 5 3 Firmware update of amplifier ACOM 2020S unit only 60 7 5 4 Firmware update of Remote Control Unit model R05 61 8 SPECIFICATIONS 62 8 1 Parameters 62 8 2 Functions 64 8 3 Regulatory Requirements 64 8 4 Storage and Shipment 68 8 4 1 Storage Environment 68 8 4 2 Shipping...

Page 7: ...ing values 31 Figure 4 1 Appearance of an alarm message 40 Figure 5 1 MENU SELECTION 42 Figure 5 2 Menu USER PREFERENCES 43 Figure 5 3 Virtual keyboard 44 Figure 5 4 Classic skin interface time proven and ergonomic 45 Figure 5 5 Dark skin interface sleek and elegant 45 Figure 5 6 Menu AMP SERVICE 46 Figure 5 7 Menu CAT SETTINGS 47 Figure 5 8 Menu FAULTS LOG 49 Figure 5 9 Menu RESTORE DEFAULT SETTI...

Page 8: ...n out of the CAT AUX connector 25 Table 2 3 Signals and pin out of the RCU s SERIAL connector 25 Table 2 4 Signals and pin out of the amplifier s RS 232 connector 26 Table 2 5 Signals and pin out of the RCU s LAN socket 26 Table 2 6 Signals and pin out of the RCU s USB type A connector 27 Table 5 1 Transceiver interface type and command set selection 48 Table 7 1 Firmware versions history 59 Table...

Page 9: ...he art 1500 W heavy duty solid state linear amplifier covering all amateur bands from 1 8 to 54 MHz The amplifier employs two powerful modules in power splitting combining technique which is well time proven in high power commercial applications to provide sufficient output headroom Thanks to input and output ports isolation from each other the intermodulation is reduced and SWR toughness self exc...

Page 10: ...l is valid till a new manual is issued Table 1 1 Production versions history Production Version Release Date Notes 04 2022 Basic design Table 1 1 Production versions history 1 3 Owner Assistance If assistance is needed you should contact your local dealerfirst 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 specia...

Page 11: ...on The ACOM 2020S is shipped as package consisting of Table 1 2 Package contents Nr PACKAGE CONTENTS Pcs 1 Amplifier ACOM 2020S unit only 1 2 Remote Control Unit with Touch Screen model R05 1 3 Cable ACOM 2020S to RCU R05 connection 1 5 m 1 4 Power supply cable 1 8 m with free cable end 1 Table 1 2 Package contents The User s Manual is available as PDF file only The latest version of the User s Ma...

Page 12: ...or technology The two final PA stages use a rugged LDMOS transistor MRFX1K80HR5 or equivalent Broadband input circuit Broadband input circuit providing a perfect transceiver load with SWR below 1 2 typically 1 1 without retuning throughout the whole frequency range from 1 8 to 54 MHz Intelligence Takes care of itself during operation via continuously working protection circuits in all modes The op...

Page 13: ...gs signal words Danger Warning Caution and Notice and instructions related to hazards that should be followed by the user in order to ensure safe operation and to keep the amplifier in a safe working condition at all times The EXPLICIT DEFINITIONS described below apply to this User s Manual DANGER These notes call attention to a procedure or instructions which if not correctly performed will resul...

Page 14: ...es that may improve equipment reliability and or personnel performance or to emphasize a concept ORANGE TEXT as LINKS marks all internal links in the document between Sections Figures Tables etc for your convenience The safety instructions contained in this User s Manual feature specific signal words Danger Warning Caution or Notice and where required a safety alert symbol in accordance with actua...

Page 15: ...cessively dusty environments or in direct sunlight DO NOT OBSTRUCT COOLING ducts or vents Keep a minimum clearance distance of 10 cm 4 inches to any other devices or objects WARNING Do not undertake on your own repairs or changes in hardware or software of the amplifier in order not to endanger your or other s health and life and not to damage the amplifier and the equipment connected with it not ...

Page 16: ...he ACOM 2020S amplifier is supplied with built in switching mode power supply SMPS The amplifier operates in an extended mains voltage range of 200 240 VAC 10 180 264 VAC limiting values with no internal switch over The consumed current is purely sinusoidal Power Factor Corrected PFC and inrush limited This makes the operation from unstable mains and generators easy and trouble free Thanks to the ...

Page 17: ...e 2 1 RCU model R05 Front panel with Touch screen Figure 2 2 Amplifier Front view Figure 2 2 Amplifier Front view For ergonomic operation you can place the RCU on your desk near to your transceiver Please have in mind that the length of a connecting cable between ACOM 2020S and RCU R05 is 1 5 m NOTICE Do not leave accidental paper cloth or other lightweight pieces around and under the amplifier Th...

Page 18: ...f connection is allowed by your national and local electrical code safety rules and regulations in force Simultaneous connection to the earth grounding and protective earth may be inadmissible or may fall under special requirements in some countries DANGER Never use the gas installation pipes for grounding This can cause an EXPLOSION DANGER Do not use the steam heating or water supply network pipe...

Page 19: ...ansmit mode RX TX by grounding of the KEY IN input Run a shielded cable from the ground on transmit connector or terminal on your transceiver to the amplifier rear panel KEY IN connector see Figure 2 3 Amplifier rear panel Connections Pos b The KEY IN connector uses a standard RCA phono plug The switching voltage presented from amplifier KEY IN connector to the transceiver ground on transmit outpu...

Page 20: ...RF INPUT SO 239 connector see Figure 2 3 Amplifier rear panel Connections Pos d using PL 259 plug NOTICE In order to avoid a damage not covered by the warranty turn off your transceiver s internal antenna tuner e RF OUTPUT connector NOTICE If this is the first time you will use a power amplifier in your station pay attention to the coaxial cable type from the amplifier s output to the antenna It m...

Page 21: ...D sub connector 15 pin male Rear panel front view 2 DISP_CPUREM_RX 2 2 2 DISP_CPUREM_RX 3 RCU_POWERON 3 3 3 RCU_POWERON 4 DISP_CPU_TX 4 4 4 DISP_CPU_TX 5 24 V 5 5 5 24 V 6 BTN1 6 6 6 BTN1 7 GND 7 7 7 GND 8 5 V 8 8 8 5 V 9 DISP_REMOTE_RX 9 9 9 DISP_REMOTE_RX 10 DISP_CPUREM_TX 10 10 10 DISP_CPUREM_TX 11 DISP_CPU_RX 11 11 11 DISP_CPU_RX 12 24 V 12 12 12 24 V 13 24 V 13 13 13 24 V 14 GND 14 14 14 GND ...

Page 22: ...fety Class I unit standard in your country The power supply cable a part of delivery is in factory assembled with power plug IEC 60320 C19 and with free cable end at other side 3х2 5 mm length 1 80 m suitable cables are AWG 13 or SWG 15 Figure 2 5 Power supply cable Figure 2 5 Power supply cable 2 4 2 Connections on RCU rear panel Figure 2 6 RCU model R05 rear panel Figure 2 6 RCU model R05 rear p...

Page 23: ...t less than the cross section of the phase conductor in the wall outlet for the amplifier It is preferable that you use the wall outlet closest to the source The installation leads should be at least 2 5 mm AWG 13 or SWG 15 recommended values if there are no stricter requirements by your local standard Check that the panel fuse has a free capacity for the additional load from the amplifier as spec...

Page 24: ...n OPERATE mode The CAT cable can be supplied optionally ordered separately or home brewed according to Table 2 2 Signals and pin out of the CAT AUX connector and also the transceiver s manual NOTICE The CAT connection requires a cable made especially for the ACOM 2020S and your transceiver Using an inappropriate cable may cause a serious damage to the amplifier and your transceiver If you need cab...

Page 25: ...ss than 12 V 6 mA 14 KEY OUT Tx Ready O C output up to 50 V 20 mA 15 GND Ground 0 Volt Table 2 2 Signals and pin out of the CAT AUX connector b RCU s SERIAL interface connector Please see Figure 2 6 RCU model R05 rear panel Pos 4 and Table 2 3 Signals and pin out of the RCU s SERIAL connector RCU SERIAL interface will be used for connecting and operating various station components that cannot supp...

Page 26: ... Table 2 4 Signals and pin out of the amplifier s RS 232 connector d RCU s LAN Ethernet interface connector Please see Figure 2 6 RCU model R05 rear panel Pos 5 and Table 2 5 Signals and pin out of the RCU s LAN socket This socket RJ45 type may remain unused until you decide to control the amplifier remotely via your local network or via Internet You may select either Ethernet cable connection or ...

Page 27: ...process enables amplifier firmware download over Internet see Section 7 5 Firmware f RCU s USB interface connector Please see Figure 2 6 RCU model R05 rear panel Pos 7 and Table 2 6 Signals and pin out of the RCU s USB type A connector This connector USB type A female may remain unused until you decide to update firmware of your amplifier or to save Log Files to USB flash memory stick Please see S...

Page 28: ...rned OFF see Figure 2 3 Amplifier rear panel Connections Pos 3 Then insert amplifier s mains plug into the wall outlet prepared for it The amplifier remains switched off Figure 3 1 Amplifier and RCU Front panels Controls and Readouts Figure 3 1 Amplifier and RCU Front panels Controls and Readouts 3 1 Low Energy STANDBY Mode of the Power Supply Now you can turn on the amplifier s mains rocker switc...

Page 29: ...ff and the POWER button located on the RCU rear panel will become inoperative c Touch screen Please see Figure 3 1 Amplifier and RCU Front panels Controls and Readouts Pos c The Remote Control Unit model R05 is equipped with 7 touch screen which features a high resolution 24 bit color display showing the operating information All indicators and controls except the primary mains switch and power in...

Page 30: ...flash and show the basic screen with the amplifier information see Figure 3 2 Basic screen The amplifier may start in either STANDBY or OPERATE mode depending on AUTO OPERATE user settings see Section 4 1 c AUTO OPERATE user settings 3 4 Basic Screen The basic screen of the RCU is most suitable for monitoring the operation of the amplifier in real time It also controls frequently used functions of...

Page 31: ...ee Figure 3 2 Basic screen Pos 2 b Operating values Please see two parameter panels on Figure 3 2 Basic screen Pos b Any two selected parameters will be shown here Each of them displays the value of a selected parameter The parameter to be displayed can be chosen by touching either panel and selecting a parameter from the drop down list As the list is longer than the screen space it can be scrolle...

Page 32: ...sed either directly through the RCU touchscreen or through the web interface If any service menu is open via the web interface the RCU RX TX indicator will show SVC e Forward power bar graph and digital readout Please see Figure 3 2 Basic screen Pos e Displays the forward power fed into the antenna f Reflected power bar graph and readout Please see Figure 3 2 Basic screen Pos f Displays the power ...

Page 33: ...ll sign area Please see Figure 3 2 Basic screen Pos k As its name suggests this field can be used to display the User s callsign however any custom text can be set in the USER PREFERENCES menu 3 5 Control System Buttons and Menus 1 The OPERATE STANDBY button is used for manual local control Please see Figure 3 2 Basic screen Pos 1 The button OPERATE STANDBY switches over the amplifier between OPER...

Page 34: ...nd being tested Provided the reception is normal prepare the transceiver as follows Select a continuous carrier mode CW RTTY FM Switch the microphone off decrease the mic gain disable FSK Reduce the output power control to a minimum Select a suitable indication so that you can watch the RF power and SWR at the transceiver output If the transceiver has a built in antenna tuner switch it off Now in ...

Page 35: ...it is unreliable below 50 W c Entering OPERATE mode Entering the OPERATE mode the transceiver receiving should not suffer If it worsens and besides the indicator RX changes into TX although the transceiver is in receive mode check the control cable connected to the KEY IN input see Section 2 4 1 b KEY IN connector and Figure 2 3 Amplifier rear panel Connections Pos b for a short circuit A wrong co...

Page 36: ...ng the common mode currents in them and improving the balance of antennas In case you use asymmetric antennas GP and similar install as many radials as practical use a well developed counterpoise system Add current chokes on the coaxial feeders Place as far away as possible also by height the radiating elements of antennas from the premises where the affected devices are located In this sense asym...

Page 37: ...neffective for HF Whenever possible use shielded cables and ground their shields at both ends The addition of even quite simple low pass L C or R C filters directly to the disturbed inputs or outputs of the devices is very effective provided it is practically applicable Last but not least bear in mind that the benefit of the above measures is two fold Firstly they reduce the interferences from you...

Page 38: ...ied and fed to the antenna through the RF OUTPUT connector In order to provide time required for the relays to switch safely from receive to transmit the transceiver should provide a dead time i e must notify the amplifier in due time by grounding the control KEY IN input not later than 10 ms before feeding drive power toward the amplifier RF input Otherwise the protection system will read HOT SWI...

Page 39: ... mode manually by the OPR STB button or by a remote command The next OPR STB button push or remote command will switch the amplifier to the OPERATE mode and restore the normal operation of the AUTO OPERATE user setting 4 2 Band Change Standard and Expanded Frequency Coverage When connected to a transceiver with CAT the amplifier will change frequency bands automatically following the transceiver s...

Page 40: ...sk and will trigger one of the three levels of protection as described in items a to c below Every event is accompanied by a warning text on the screen see Figure 4 1 Appearance of an alarm message A sound alarm will be also produced if set on in the USER PREFERENCES menu see Section 5 1 Menu USER PREFERENCES Figure 4 1 Appearance of an alarm message Figure 4 1 Appearance of an alarm message a Fir...

Page 41: ...otection level HARD FAULT The third and most serious protection level is a HARD FAULT The amplifier will be turned off automatically to avoid possible further damages When a HARD FAULT protection trips off the data about the fault is stored in the memory and the front panel screen is blanked There is also a sound alarm a series of F sent in CW If the reason for tripping the protection is not obvio...

Page 42: ... AND SERVICE FUNCTIONS By pushing the MENU button see Figure 3 2 Basic screen Pos 3 the user invokes the MENU SELECTION screen see the figure below Each menu can be selected by a finger touch Close the MENU SELECTION screen by touching the BACK button The choices are described in the Sections below Figure 5 1 MENU SELECTION Figure 5 1 MENU SELECTION ...

Page 43: ...ng see Section 3 3 Initial Turning On Upon triggering a WARNING during amplifier operation a message is displayed and the amplifier is switched automatically to STANDBY mode When AUTO OPERATE is set to ON the amplifier will automatically be switched back to OPERATE in a few seconds b CALLSIGN If entered here a call sign or another text will be displayed on the Basic screen see Figure 3 2 Basic scr...

Page 44: ... if not in OPERATE mode d BUZZER VOLUME BUZZER VOLUME user setting is used to set the volume of the built in buzzer Values from 1 to 5 can be set for volume control e DISPLAY BRIGHTNESS DISPLAY BRIGHTNESS user setting is used to set the brightness of the screen Values from 1 to 10 can be set for brightness control f INTERFACE SKIN The interface of ACOM 2020S is skinnable it supports various visual...

Page 45: ...t i o n MENUS SETTINGS AND SERVICE FUNCTIONS Page 45 of 76 Figure 5 4 Classic skin interface time proven and ergonomic Figure 5 4 Classic skin interface time proven and ergonomic Figure 5 5 Dark skin interface sleek and elegant Figure 5 5 Dark skin interface sleek and elegant ...

Page 46: ...procedures are carried out only by a trained service technician Figure 5 6 Menu AMP SERVICE Figure 5 6 Menu AMP SERVICE The inactive functions are greyed out and the active are red When leaving a function submenu it is turned off and deactivated automatically At pressing the BACK button all service functions are turned off and the MENU SELECTION screen comes back see Figure 5 1 MENU SELECTION At c...

Page 47: ...FF has to be selected as INTERFACE type The CAT settings are accessible only in RX mode The amplifier will automatically switch to SERVICE mode when entering the CAT SETTINGS menu and switch to STANDBY mode upon exiting Figure 5 7 Menu CAT SETTINGS Figure 5 7 Menu CAT SETTINGS To setup the CAT interface first the type of INTERFACE needs to be selected see Figure 5 7 Menu CAT SETTINGS RS 232 serial...

Page 48: ...ver s menu The BYTE SPACING introduces a pause with a specified duration in microseconds between the bytes within a message sent to the transceiver This parameter is valid only for serial RS 232 or TTL CAT interface The default byte spacing duration is zero 0 µs The parameter should be increased only if communication problems appear with the transceiver The POLLING TIME specifies how often in mill...

Page 49: ...lating program TTY Also in FAULTS LOG reading mode the amplifier can save the file to USB memory stick see Section 2 5 f RCU s USB interface connector Saving a faults log file to USB memory is a functionality under development and will be available in a future firmware versions Please see Section 7 4 Using the Fault Codes signatures for Diagnostics Figure 5 8 Menu FAULTS LOG Figure 5 8 Menu FAULTS...

Page 50: ...are available see Figure 5 9 Menu RESTORE DEFAULT SETTINGS RESET USER PREFERENCES TO FACTORY DEFAULTS Resets User Preferences the settings from Menu USER PREFERENCES to their factory default values Figure 5 9 Menu RESTORE DEFAULT SETTINGS Figure 5 9 Menu RESTORE DEFAULT SETTINGS To reset a setting touch the corresponding RESET button This will invoke a confirmation screen with RESET and CANCEL but...

Page 51: ...is used to choose between ETHERNET wired cable connection see 2 5 d RCU s LAN Ethernet interface connector Wi Fi wireless connection see 2 5 e RCU s Wi Fi device interface DISABLED network connection in this selection all other fields are hidden until either ETHERNET or Wi Fi is selected IP ADDRESS ASSIGNMENT This parameter is used to selects the method to set the IP Internet Protocol address subn...

Page 52: ...S in your LAN network This parameter is disabled when DHCP is selected in parameter IP ADDRESS ASSIGNMENT GATEWAY This parameter is used to set the Gateway address for ACOM 2020S in your LAN network This parameter is disabled when DHCP is selected in parameter IP ADDRESS ASSIGNMENT DNS Domain Names System This parameter is used to set the DNS address for ACOM 2020S in your LAN network This paramet...

Page 53: ...TWORK SETTINGS and how to connect ACOM 2020S to your LAN network please contact a local IT professional or your Internet provider 5 7 Menu AMP UPDATE The menu AMP UPDATE is accessible from the MENU SELECTION screen see Figure 5 1 MENU SELECTION This menu is used for updating the firmware of the amplifier Please see Section 7 5 Firmware 5 8 HELP information You can find HELP button in many of the a...

Page 54: ...amplifier is connected to your LAN network its IP address see Figure 6 1 Web interface running in web browser on a PC Pos 1 can be used to access its web interface in an any web browser running on a device PC smart phone or tablet connected to the same LAN network The IP address of ACOM 2020S can be seen and changed in the NETWORK SETTINGS menu see 5 6 Menu NETWORK SETTINGS The amplifier s visuali...

Page 55: ...ace running in web browser on a smart phone 6 2 Remote Control via RS 232 interface The ACOM 2020S may be controlled remotely by the RS 232 port For cable connection please see Section 2 5 c Amplifier s RS 232 interface connector and Table 2 4 Signals and pin out of the amplifier s RS 232 connector For ACOM 2020S RS 232 interface protocol please contact your dealer see Section 1 3 Owner Assistance...

Page 56: ...icular attention to the mains plug and the wall outlet see Sections 2 4 1 h The IEC 320 C20 IEC 60320 C20 Power inlet and 2 4 2 k Preparation of wall outlet If you have any doubts consult with a qualified electrician Periodically check the SWR of the antennas and if this changes over time Problems could occur more often in poor weather conditions rain snow strong wind etc 7 2 Cleaning CAUTION Do n...

Page 57: ...ndard fuses from the types recommended below The two Primary Mains Fuses of the amplifier are located on the rear panel see Figure 2 3 Amplifier rear panel Connections Pos g They are fuses of the T type time lag slow blow European size 6 3x32 mm ceramic or glass body cartridge The fuses must be rated for 20 A 250 V Suitable 20 A fuse is Schurter PN 8020 0605 ceramic body cartridge This fuse can be...

Page 58: ... signatures for Diagnostics The data of the last 28 HARD FAULT protection trips is stored in the amplifier memory see Section 5 4 Menu FAULTS LOG The data can be downloaded from ACOM 2020S memory through the RS 232 port and stored in a computer file even if the amplifier cannot be turned on after a serious fault feeding external power to the Control unit only in either of the following ways will d...

Page 59: ...will be available in a future 7 5 Firmware 7 5 1 Firmware Versions The history of available ACOM 2020S firmware versions is shown in Table 7 1 Firmware versions history Table 7 1 Firmware versions history Version Release Date Amplifier CPU Module firmware Notes 1 3 25 11 2021 Base firmware version Version Release Date RCU model R05 firmware Notes 1 0 25 11 2021 Backend Base firmware version 1 0 25...

Page 60: ...th amplifier via RS 232 interface For cable connection please see Section 2 5 c Amplifier s RS 232 interface connector and Table 2 4 Signals and pin out of the amplifier s RS 232 connector The ACOM Terminal S is available for MS Windows Apple Mac and Linux operation systems Firmware update from USB memory or through Internet is a functionality under development and will be available in a future fi...

Page 61: ...e of Remote Control Unit model R05 For uploading a firmware to RCU you have two possibilities Use the USB memory stick connected to RCU USB port Automatic firmware update through Internet Firmware update from USB memory or through the Internet is a functionality under development and will be available in future firmware versions ...

Page 62: ... on request Please refer the applicable regional band plans and laws for specific allocations and limitations b Rated Output Power 1500 W PEP or continuous carrier no mode limit c Intermodulation Distortions IM3 Better than 30 dB below rated PEP d Harmonic and Parasitic Emissions Output Suppression 1 8 29 7 MHz better than 60 dB below rated output 50 54 MHz better than 70 dB below rated output e I...

Page 63: ...oltage coming from external devices connection 50 V Maximum allowable closed circuit current flow by external devices 20 mA Minimum required time of sequencing between sending a request for transmitting KEY IN ground on transmit signal and applying RF drive power at RF INPUT connector for safely switching receive to transmit 10 ms k Safety and Electromagnetic Compatibility Complies with CE safety ...

Page 64: ...rements a European conformity 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 b US Federal Communications Commission FCC re...

Page 65: ...ion of maximum gain and gain in the direction of interest Controlled environments apply where people are aware of their exposure and have the ability and knowledge to control it Greater MPE levels are permitted in controlled areas A good rule of thumb is that the controlled exposure limit can be applied to those areas in which you can control access An example of this is your fenced in backyard Yo...

Page 66: ... 1 4 3 0 1 9 4 2 3 0 7 1 6 1 9 4 2 2 7 6 0 6 1 0 2 2 2 7 6 0 3 8 8 4 20 14 350 0 0 7 1 6 1 9 4 2 2 7 6 0 3 1 0 2 2 2 7 6 0 3 8 8 4 6 1 4 3 1 3 8 8 4 5 3 11 8 9 2 0 4 4 5 3 11 8 7 5 16 7 17 18 168 0 0 9 2 0 2 4 5 3 3 4 7 5 3 1 3 2 8 3 4 7 5 4 8 10 6 6 1 8 3 9 4 8 10 6 6 7 15 0 9 2 5 5 5 6 7 15 9 5 21 1 15 21 450 0 1 1 2 3 2 8 6 3 4 0 8 9 3 1 5 3 3 4 0 8 9 5 6 12 5 6 2 1 4 6 5 6 12 5 7 9 17 7 9 2 9 ...

Page 67: ...a Multiband vertical R8 Dipole 10 m high 12 m Vertical with some radials 3 el Tribander 6 el Yagi Frequency MHz Gain dBi Gain dBi Gain dBi Gain dBi Gain dBi 1 800 2 68 1 6 3 700 3 37 0 7 7 000 3 0 3 80 0 0 14 000 3 0 6 82 1 1 9 5 11 3 21 000 3 0 7 62 4 0 10 3 11 5 28 000 3 0 7 17 4 5 10 7 11 5 50 000 3 0 8 20 6 1 12 3 Table 8 2 Different antenna gain chart ...

Page 68: ...ironment ranges Temperature range 40 to 70 degrees Celsius 40 o F to 158 o F Humidity up to 75 35 degrees Celsius 95 o F 8 4 2 Shipping Size and Weight Amplifier WxDxH Approx 740x600x370 mm 29 0 kg 29 2x23 7x14 6 inches 64 0 lbs Please contact ACOM see 1 3 Owner Assistance for shipment details Figure 8 1 Packaging cardboard box Figure 8 1 Packaging cardboard box 8 4 3 Transportation All types of t...

Page 69: ...ier for shipping as described below Switch off the amplifier via Main Power Switch see Figure 2 3 Amplifier rear panel Connections Pos 3 Make sure the Main Power Switch is in OFF position Pull the amplifier s line mains plug out of the outlet Do not disconnect GND connection Disconnect all cables from the rear panel of the RCU Disconnect all cables except GND connection from the rear panel of the ...

Page 70: ...ipping insurance is provided by the customer when sending in an amplifier you can verify the amount covered by the shipping company by looking on their website If you are shipping the amplifier full upgraded coverage is available as a suggested option For alternative shipping instructions please contact your local dealer ...

Page 71: ...t you should not place the electrical item in the general waste Waste electricals This symbol three green arrows going in a triangle with electrical plug in the center means that according to local laws and regulations this product should be sent for recycling Old electrical and electronic equipment and batteries should be recycled at a facility capable of handling these items and their waste bypr...

Page 72: ...User s Manual ACOM 2020S 1 8 54 MHz Linear Power Amplifier Page 72 of 76 S e c t i o n NOTES June 2022 NOTES ...

Page 73: ...User s Manual ACOM 2020S 1 8 54 MHz Linear Power Amplifier June 2022 S e c t i o n NOTES Page 73 of 76 ...

Page 74: ...User s Manual ACOM 2020S 1 8 54 MHz Linear Power Amplifier Page 74 of 76 S e c t i o n NOTES June 2022 ...

Page 75: ...r Amplifier June 2022 S e c t i o n NOTES Page 75 of 76 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 76: ... The used images are illustrative only Subject to change without notice I Printed in Bulgaria All rights reserved I Design and content by ACOM Ltd ACOM 2020S User s Manual I First Edition Revision 01 I June 2022 ACOM Ltd Bulgaria Bozhurishte 2227 Sofia Bozhurishte Industrial Park 6 Valeri Petrov Str GPS coordinates 42 748616о 23 209801о support acom bg com ...

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