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Barrett 4075 Operating And Installation Manual

High power hf transmitter
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BARRETT
Operating and Installation
Manual
Barrett 4075 High Power HF Transmitter
PWR
ENT
ESC
Model: BC407500 and BC407501
BCM407500/4
© Barrett Communications
BARRETT 4022 24V POWER SUPPLY/12V 5.0A CHARGER
ON
OUTPUT
OVERLOAD
CHARGING
BATTERY
CHARGED
FLOAT
BATTERY BACK UP
ACTIVE

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  • Page 1 BARRETT Operating and Installation Manual Barrett 4075 High Power HF Transmitter BARRETT 4022 24V POWER SUPPLY/12V 5.0A CHARGER OUTPUT OVERLOAD CHARGING BATTERY CHARGED FLOAT BATTERY BACK UP ACTIVE Model: BC407500 and BC407501 BCM407500/4 © Barrett Communications...

  • Page 3: Safety

    4075 solid-state Linear Amplifiers and the Barrett 4075 Power Supply Unit. The proper, safe installation of the Barrett 4075 solid-state Linear Amplifier is not difficult to accomplish if the following guidelines are followed: All electrical work should be undertaken by a suitably qualified person and in accordance with local bylaws.
  • Page 4 FCC RF Exposure Compliance Statement The 4075 Linear Amplifiers have been evaluated and comply with the Federal Communications Commission (FCC) RF exposure limits for the General Popula- tion/Uncontrolled exposure environment. Supplier’s Declaration of Conformity Per FCC CFR 47 Part 2 Section 2.1007(a)
  • Page 5 Notice to Users (FCC) This device complies with Part 15 of the FCC rules per the following conditions: • Changes or modifications made to this device, not expressly approved by Barrett Communications, could void the authority of the user to operate this equipment.

  • Page 7: Table Of Contents

    Connection to Mains ................17 Grounding .....................19 Linear Amplifier ...................20 4075 High Power HF Transmitter - Rear Connections ......21 4075 High Power HF Transmitter - Rear Connections (with ATU) ...23 Antenna ......................26 OPERATION 3 ..................27 Switching On....................27 4050 Antenna Selection ................27 Linear Amplifier Settings ................28...
  • Page 8 Main Menu ....................35 Service Menu ..................37 SPECIFICATIONS 6 ................40 General......................40 DC Power Supplies ..................40 4075 Linear Amplifier ..................41 1kW ATU .....................42 Pin Outs ......................44 Power Distribution Unit - Type 1 ..............44 Power Distribution Unit - Types 2 and 3 ............44 4075 Linear Amplifier ..................45...

  • Page 9: System Overview 1

    4075 from input and output overload while providing a sophisticated early warning and a diagnostic interface for system monitoring and event logging. The 4075 system is field re-programmable via USB allowing the end user to update system software. The Barrett ISO9001 Quality Assurance Program ensures consistent perfor-...

  • Page 10: Terms And Abbreviations

    4075 HIGH POWER HF TRANSMITTER - SYSTEM OVERVIEW Terms and Abbreviations Term Definition Continuous Wave (used for Morse code) Decibels Decibels relative to the carrier - is the power ratio of a signal to a carrier signal, expressed in decibels.

  • Page 11: System Overview

    4075 HIGH POWER HF TRANSMITTER - SYSTEM OVERVIEW System Overview 4075 High Power HF Transmitter - Front BARRETT 4022 24V POWER SUPPLY/12V 5.0A CHARGER OUTPUT OVERLOAD CHARGING BATTERY CHARGED FLOAT BATTERY BACK UP ACTIVE...
  • Page 12 4075 HIGH POWER HF TRANSMITTER - SYSTEM OVERVIEW Reference Description AC Power Distribution Unit 4050 HF SDR Transceiver (left) and 4022 (24V) Power Supply (right) 4075 48V Power Supply 4075 Linear Amplifier ATU Interface Unit (BCA407536) - Optional...

  • Page 13: Panels

    4075 HIGH POWER HF TRANSMITTER - SYSTEM OVERVIEW Panels AC Power Distribution Unit - Type 1 Reference Description Mains Input Power Isolation ON/OFF switch (shown in the ON config- uration) 5A Mains output sockets circuit breaker 11A Mains output sockets circuit breaker...
  • Page 14 4050 HF SDR Transceiver Operating Manual (P/N BCM40500) and 4022 24V Power Supply Operating Manual (P/N BCM40220). 4075 DC Power Supplies (1kW configuration) Each power supply can be removed individually by sliding it out from the front of the system.
  • Page 15 4075 Linear Amplifier Reference Description Pwr - indicates if power is supplied to 4075 Linear Amplifier Tx - indicates if in PTT state FLT - the 4075 Linear Amplifier has a fault Log - indicates that the Linear Amplifier has a fault recorded. The log can be cleared through the menus.
  • Page 16 An ATU Interface Unit (BCA407536) is required for the 1kW ATU to operate. This ATU Interface Unit provides DC power to the 1kW ATU and also provides a control path from the 4075 Linear Amplifier to the 1kW ATU for tune con- trol.

  • Page 17: Installation 2

    Requirements Housing The ideal housing for the 4075 system is a dedicated radio site in an air-condi- tioned, secure room connected to mains power. Ideally this room will have it’s own back-up power source such as solar panels, wind turbines and stand-by batteries.
  • Page 18 Barrett Communications recommend that a dedicated RCD is used in this circuit. Please note that the peak current drawn by the 4075 system exceeds normal wall socket ratings and so connection through a wall socket is not safe and should be avoided.

  • Page 19: Grounding

    4075 HIGH POWER HF TRANSMITTER - INSTALLATION Grounding The ground (earth) system is a key part of the overall system and consequently of the system performance. An inadequate ground system is the primary cause of poor system performance, noise and lightning damage. When an ATU is fitted, the system ground will include a ground counterpoise which is essential for ATU tuning performance.

  • Page 20: Linear Amplifier

    RF output cable, are installed in the rack and so identification and connection is straightforward. Both the 4075 Linear Amplifier and the 4075 Power Supply units have been factory adjusted for optimum performance. CAUTION: Linear Amplifiers weigh between 30kg (500W configu- ration) and 35kg (1kW configuration).

  • Page 21: 4075 High Power Hf Transmitter - Rear Connections

    4075 HIGH POWER HF TRANSMITTER - INSTALLATION 4075 High Power HF Transmitter - Rear Connections ACTIVE (BROWN) NEUTRAL (BLUE) EARTH(GREEN YELLOW)
  • Page 22 4075 HIGH POWER HF TRANSMITTER - INSTALLATION AC Power Distribution Unit (P/N BCA407520) Barrett 4050 HF SDR Transceiver (P/N BC405000) with Fan attachment (BCA40002) 4022 24V HF Power Supply (P/N BC402201) 4075 Power Supply Unit (P/N 407502) 4075 Linear Amplifier (1kW P/N BC407501, 500W P/N BC407500)

  • Page 23: 4075 High Power Hf Transmitter - Rear Connections (With Atu)

    4075 HIGH POWER HF TRANSMITTER - INSTALLATION 4075 High Power HF Transmitter - Rear Connections (with ATU) ACTIVE (BROWN) NEUTRAL (BLUE) EARTH(GREEN YELLOW) a b c...
  • Page 24 4075 HIGH POWER HF TRANSMITTER - INSTALLATION AC Power Distribution Unit (P/N BCA407520) Barrett 4050 HF SDR Transceiver (P/N BC405000) with Fan attachment (BCA40002) 4022 24V HF Power Supply (P/N BC402201) 4075 Power Supply Unit (P/N BC407502) 4075 Linear Amplifier (1kW P/N BC407501, 500W P/N BC407500)
  • Page 25 4075 HIGH POWER HF TRANSMITTER - INSTALLATION 10A IEC cable (P/N CA-16571) 4075 Linear Amplifier to ATU Interface cable (P/N SA-20767) ATU Interface to ATU cable (P/N SA-20767) Coaxial RG213 (min) cable to ATU High Voltage Antenna Feeder Cable Ground (earth) cable...

  • Page 26: Antenna

    1/3 longer than the length of the antenna, buried to about 150 mm below the surface should be adequate (Radial earth mat / ground plane: Barrett P/N BCA20026). Connection to metal water pipes can also improve the ground. On a roof top, there is usually not enough space for an adequate counterpoise.

  • Page 27: Operation 3

    1 or 2 PDU. Ensure the other front switches are set to the on position as required if using a type 2 PDU. If the 4022 Power Supply, 4050 HF SDR Transceiver and the 4075 Linear Ampli- fier do not also switch on, follow the steps below: Flip the back and front switches on the 4022 Power Supply.

  • Page 28: Linear Amplifier Settings

    All cable connections are cor- rect and that none are loose or disconnected • Check that the Linear is switched on Linear Amplifier Settings The 4075 Linear Amplifier is programmed and set up before it is shipped so no further actions are necessary.

  • Page 29: Display 4

    DISPLAY This chapter provides a guide to the various status displays that may appear during 4075 operation. NOTE: The backlight will turn off after 1 minute of inactivity. Any activ- ity, including key presses, transmission or error state, will reawaken the backlight.
  • Page 30 4075 HIGH POWER HF TRANSMITTER - DISPLAY Current Error Information This display provides a brief indication of any fault conditions currently pres- ent in the system. Current Error Information Actv. WARN: NO ERROR Actv. ERR : NO ERROR Actv. CRIT:...
  • Page 31 4075 HIGH POWER HF TRANSMITTER - DISPLAY AmbT: 28 Fan0: Fan1: Pump: Fan2: Fan3: Label Indication Radio The radio connected to the system Whether an Antenna Tuning Unit is connected to the Linear Amplifier Band Low Pass Filter Band Volt...

  • Page 32: Antenna Tuning Unit Status Display

    If no ATU is connected to the system, the status menu will remain unchanged (see Receive Mode). Unknown Tuner If an active device is connected to the 4075 Linear Amplifier’s ATU interface but the Linear has not been configured for an ATU, the following screen will display:...
  • Page 33 4075 HIGH POWER HF TRANSMITTER - DISPLAY Scan Mode When the 4050 Transceiver is scanning or a manual channel change occurs, the transceiver signals ‘scan mode’ to the amplifier and the following screen is displayed: Power: VSWR: 0.00 SCAN Current: 0.03 A...
  • Page 34 4075 HIGH POWER HF TRANSMITTER - DISPLAY Untuned Mode From the ‘untuned mode’, the amplifier can change to either ‘scan mode’ or ‘tuning mode’ in response to the operation of the radio. It will move to ‘scan mode’ if the 4050 changes channel or ‘tuning mode’ if the operator or con- trolling system issues a ‘manual tune’...

  • Page 35: Advanced Menus 5

    Access the menus by pressing the ESC key and using the navigation up and down keys to select the function or setting desired. Main Menu After pressing the ESC key the 4075 shows the ‘Main Menu’. MAIN MENU 1 - Configuraton Menu...
  • Page 36 4075 HIGH POWER HF TRANSMITTER - ADVANCED MENUS Exciter Menu The Exciter Menu selects the model of transceiver being used to drive the Linear. There are two choices. EXCITER MENU 1 - Set 4050 2 - Set 2050 ATU Menu Use this menu to set the type of ATU.

  • Page 37: Service Menu

    From the Main Menu select the Service Menu item and press ENT. MAIN MENU 1 - Configuraton Menu 2 - Service Menu A four-digit key will be requested. Please contact Barrett Communications for this access key. Passcode: 0000 Use the UP and DOWN navigational keys to select the digit value and the LEFT and RIGHT navigational keys to select the digit being set.
  • Page 38 4075 HIGH POWER HF TRANSMITTER - ADVANCED MENUS SERVICE MENU 1 - Clear Critical Error 2 - Attenuation Control 3 - ALC Trim Clear Critical Error Selecting this entry and then pressing the ENT key clears any current critical error.
  • Page 39 4075 HIGH POWER HF TRANSMITTER - ADVANCED MENUS ALC Trim This menu allows the adjustment of the ALC level used to signal power level to the transceiver. This setting is normally adjusted in the factory during the manufacturing process and does not normally require changes in the field.

  • Page 40: Specifications 6

    SPECIFICATIONS General Frequency coverage 1.5MHz to 30MHz (reduced performance below 1.6MHz) Power output 1000W PEP or 500W PEP ± 1.5dB Duty cycle 100%, Continuous PEP, CW Exciter 4050 HF SDR transceiver DC Power Supplies DC Voltage Output 48V (Nominal) Rated Current Current Range 0-21A Rated Power...

  • Page 41: 4075 Linear Amplifier

    4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS Dimensions (L x W x H) 350.8mm x 483.6mm x 44mm Connectors 1x DB-25 female 3x Standard IEC sockets Positive and negative terminals 4075 Linear Amplifier Power Output CW 1kW or 500W ± 1.5 dB...

  • Page 42: 1Kw Atu

    4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS 1kW ATU Frequency Range Wire (23-46m): 2 - 30 MHz Whip (10 m): 2 - 30 MHz Whip (5 m): 3 - 30 MHz Duty Cycle 100% Duty Cycle Voice and Data VSWR Better than 1.5:1 when tuned...
  • Page 43 4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS Connectors RF: N-type socket Tune Control: 10 Pin Mil Circular Connector Antenna: TNC...

  • Page 44: Pin Outs

    4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS Pin Outs Power Distribution Unit - Type 1 Designation Rating Designation Polarity Cable Colour Active Brown Neutral Blue Earth Green/Yellow Power Distribution Unit - Types 2 and 3 All outlets are 10A IEC C13 sockets as above.

  • Page 45: 4075 Linear Amplifier

    4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS 4075 Linear Amplifier Reference Description RF Out (N-type connector) 48V DC In (Anderson connector) Ground (Earth) Coolant drain plug 48 V Power Supply Control ATU Control Micro-USB AUX Control 4050 Interface 2050 Interface...
  • Page 46 4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS 48 V Power Supply ACOKA DCOKA TMPALMA ONOFFA ACOKB DCOKB TMPALMB ONOFFB +SENSE ACOKC DCOKC TMPALMC ONOFFC -SENSE ATU Control RS485A RS485B Strobe INIT CHKTUNE TUNED Reserved...
  • Page 47 4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS Auxiliary Voltage + 4050 Interface Voltage + Tune Scan Tuned...
  • Page 48 4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS 2050 Control Voltage + DATA CLOCK TUNED STROBE FAULT Reserved SCAN TUNE Reserved Reserved Reserved 12-24 V DC IN Voltage IN Spare...
  • Page 49 4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS ATU Interface Unit 15 Pin ATU Interface Unit to 1 kW ATU Connector Function Colour 485Data- SCAN TUNED TUNE IO AC2-+VE LtGN-BL 485Data+ ScanAltAnt AltAnt+24V on AC1-GND GN-R...
  • Page 50 4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS 9 Pin ATU Interface Unit to 4075 Linear Amplifier connector Description ATU V+ ATU Data ATU Clock ATU Strobe ATU Init ATU Chk Tune ATU Tuned Note: This connector is pin-for-pin the Linear Amplifier 9 pin connector.

  • Page 51: 1Kw Atu

    4075 HIGH POWER HF TRANSMITTER - SPECIFICATIONS 1kW ATU ATU 10 Pin Mil Circular Control Connector Function Colour SCAN TUNED ScanAltAnt AC1-GND GN-R AC2-+VE LtGN-BL AltAnt+24V on TUNE IO 485Data- 485Data+...

  • Page 52: Warranty Statement

    Warranty Statement Barrett Communications (hereafter referred to as ‘Seller’) provides a three (3) year warranty on all Barrett products from the date of shipment from the Seller. A one (1) year warranty from the date of shipment from the Seller is provided for all batteries.

  • Page 53: Contact Details

    Barrett Communications Pty Ltd Head Office: PO Box 1214, Bibra Lake WA 6965 AUSTRALIA Toll Free Tel: 1800 999 580 (Within Australia) Tel: +618 9434 1700 Fax: +618 9418 6757 email: support@barrettcommunications.com.au...
  • Page 54 AUSTRALIA (Head office and Manufacturing) Barrett Communications Pty Ltd 47 Discovery Drive, Bibra Lake, WA 6163 Australia Tel: +61 8 9434 1700 Email: info@barrettcomms.com (European office) Barrett Communications - Europe Unit 9, Fulcrum 2, Solent Way, Whiteley, Hampshire, PO15 7FN United Kingdom Tel: +44 (0) 1489 880 332 Email: uksales@barrettcommunications.co.uk...

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Bc407500Bc407501Bcm407500/4

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