Model AMP2440 Pole Mounted Bi-Directional Power Amplifiers for 2.4 GHz Installation and Operation Manual Version 2.8 8000 Lee Highway Falls Church, VA 22042 Tel: (703) 205-0600 Fax: (703) 205-0610 Sales: 1-888-297-9090 www.ydi.com May 2002 201 North Fourth St.
TABLE OF CONTENTS 1.0 DESCRIPTION................................................................................................. 1 2.0 AMPLIFIER FEATURES ................................................................................ 1 3.0 DEVICE SPECIFICATIONS .......................................................................... 2 4.0 AMPLIFIER KIT ............................................................................................... 4 5.0 INSTALLATION AND CABLING INSTRUCTIONS ..
PROFESSIONAL INSTALLATION REQUIRED The Model AMP2440 Amplifier and antennas used must be professionally installed by experienced antenna installation professionals who are familiar with radio frequency (RF) issues such as gains and losses, as well as local building and safety codes. Failure to do so will void the product warranty and may expose the end user to excessive RF hazards.
LIMITED WARRANTY Young Design, Inc. (YDI) warrants that your device is free of defects in material and workmanship for a period of one year after initial purchase. YDI will, in this period of time, repair or replace, any YDI product returned to the factory, freight prepaid. The YDI warranty covers repairs or replacement (at YDI’s option) of the product only. YDI is not responsible for the cost of removal, reinstallation or shipping to the place of repair.
Installation and Operation Manual AMP2440 Power Amplifier 1.0 Description The AMP2440 is a bi-directional amplifier designed for extending the range of 2.4 GHz wireless radio modems, Wireless LAN cards, Access Points and wireless bridges. The units provide transmit power amplification as well as receive signal gain. The amplifier is installed right at the antenna’s feed point, providing maximum effectiveness of transmit power.
3.0 Device Specifications General Operating Range: Operating Mode: Receiver Low Noise Amplifier (LNA) 2400-2483 MHz Receive Gain: 16 dB nominal Bi-directional, half-duplex. Senses RF carrier from transmitter and automatically switches from receive to transmit mode. Frequency Response: +/-1 dB over operating range Noise Figure: 2.8 dB typical, 3.8 dB max at room temperature.
3.0 Device Specifications (Continued) Model 2440 Functional Block Diagram View showing the DC Injector and the pole mounted outdoor Amplifier attached to its mounting bracket.
4.0 Amplifier Kit Each Amplifier Kit Includes: • • • • • Bi-directional remote mounted amplifier DC Power Injector 12 VDC, 110/220 VAC power supply Stainless steel U-bolts and mounting bracket for amp Installation Manual Close up of the bracket and mounting hardware attached to the amplifier. IMPORTANT: Only mount the amplifier with the connectors facing downward. Do not mount it with the connectors facing sideways or upwards which will void the warranty.
5.0 Installation and Cabling Instructions FCC NOTICE In order to comply with FCC Part 15 rules, the proper version of the amp must only be used in systems that have been FCC certified. Appendix B of this manual lists some of these certified systems. The system must be professionally installed to ensure compliance with the Part 15 certification. It is the responsibility of the professional installer to ensure that certified systems be deployed in the United States (or where FCC rules apply).
The picture to the left shows the amplifier in typical installation shown with the YDI Model PT2421 Grid Dish antenna vertically polarized. The location on the mast where the amplifier is mounted is not important provided that the connectors face downward. (Note that when this picture was taken, the connectors were not taped yet nor was the cable secured to the mast.) Also, there is no need to plug or fill any of the holes on the back of the amplifier enclosure.
7.0 DC Power Injector Operation A DC Power Injector is an in-line device that “injects” the DC power necessary to operate the amplifier onto a transmission line. This allows the coax cable to carry both RF signals and DC power to the mast-mounted amplifier. This precludes the need to run a separate power cable to the remote mounted amplifier.
10.0 Operation The unit operates automatically and there are no user adjustments required. The amplifier is only intended for use with 2.4 GHz radio modems that alternate between transmit and receive in the same radio channel. These are referred to as Time Division Dultiplex (TDD) devices. A typical example is an 802.11 WLAN card or Access Point.
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APPENDIX A Table A - Conversions from dBm to Watts dBm 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Watts 1.0 mW 1.3 mW 1.6 mW 2.0 mW 2.5 mW 3.2 mW 4.0 mW 5.0 mW 6 mW 8 mW 10 mW 13 mW 16 mW 20 mW 25 mW 32 mW 40 mW 50 mW 64 mW 80 mW 100 mW 128 mW 160 mW 200 mW 250 mW 320 mW dBm 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 60 Watts 400 mW 500 mW 640 mW 800 mW 1.0 W 1.3 W 1.6 W 2.0 W 2.5 W 3.0 W 4.0 W 5.0 W 6.0 W 8.
APPENDIX B FCC Part 15 Certified Systems FCC ID#: NM5-LUC2400E FCC certified systems consist of: • • • • • A2440-xxF amplifier, DC Injector and 12 VDC Power supply Orinoco/Agere WLAN card with the FCC ID#: IMRWLPCE24H Outdoor Antenna Coax cable (See Table D) Consult the YDI web site for the most current product and certification information www.ydi.
APPENDIX B (Continued) FCC Part 15 Certified Systems FCC ID#: A2400S FCC certified systems consist of: • • • • • A2440-xxF amplifier, DC Injector and 12 VDC Power supply Agere WLAN card, PART#: 012699 Outdoor Antenna Coax cable (See Table D) Consult the YDI web site for the most current product and certification information www.ydi.
APPENDIX B (Continued) FCC Part 15 Certified Systems FCC ID#: NM5-C111E FCC certified systems consist of: • • • • • A2440-xxF amplifier, DC Injector and 12 VDC Power supply Nokia C111 WLAN card with the FCC ID#: ORE-C110-C111 Outdoor Antenna Coax Cable (See Table D) Consult the YDI web site for the most current product and certification information www.ydi.
APPENDIX B (Continued) Table D - Authorized Cables with Minimum Lengths Cable Type Minimum Length/Loss Max Recommended Lengths RG58/U 19 Feet/ 3.4 dB 40 Feet LMR 195 19 Feet/ 3.4 dB 40 Feet LMR200 20 Feet/ 3.4 dB 50 Feet LMR240 25 Feet/ 3.3 dB 65 Feet LMR400 50 Feet/ 3.4 dB 100 Feet LMR500 60 Feet/ 3.5 dB 140 Feet LMR600 80 Feet/ 3.5 dB 150 Feet LMR900 120 Feet/ 3.5 dB 250 Feet LMR1200 150 Feet/ 3.4 dB 350 Feet LMR1700 200 Feet/ 3.
APPENDIX C Calculating Input Power The following information explains how to calculate the input power to the amplifier for your configuration. 1. Using Appendix A, Table A, convert the output power of the radio modem from Watts (or milliWatts) to dBm. The Model AMP2440 amplifier is optimized to work with input powers between 3.2 mW (+5 dBm), and 10 mW (+10 dBm). 2. Calculate the cable attenuation for your installation. Determine the attenuation for the length of your cable at 2.4 GHz.
