OJBAB-ACCESS-SU02Fixed Broadband Wireless Access Network

7. 2.1033(b)(5) Block Diagram. Figure 1 : Radio Transceiver Module. 900MHz Modulator 25dB Atten. Amp GSM SAW 30dB Step Attenuator TX I data Amp Amp Amp Amp Amp Amp Amp Amp Amp Amp Amp Amp Amp 902.5MHz VCO Loop Filter 900MHz LPF 3dB Splitter Fixed Pad TX LO Switch 902.5MHz Synthesizer 900MHz De- Modulator GSM SAW GSM SAW 30dB Step Attenuator TX Q data RX I data RX Q data Loop Filter 2.5GHz Synthesizer 2.16GHz VCO 2.45GHz VCO 25MHz ref. 25MHz ref. 25MHz ref. To Baseband Amp 4.5GHz BPF T / R Switch First Mixer Band Switch Du p lexer 5.8GHz BPF 5.3GHz BPF 5.8GHz BPF 5.3GHz BPF T / R Switch T / R Switch A ntenna Switch Power Amp Vertical Polarization Horizontal Polarization “DIPLEXER” “RAT-RACE” Combiner Doubler RF Frequency 5.15GHz to 5.25GHz 5.25GHz to 5.35GHz 5.725GHz to 5.825GHz LO Frequency 4.2475GHz to 4.3475GHz 4.3475GHz to 4.4475GHz 4.8225GHz to 4.9225GHz IF Frequency 902.5MHz IF RECEIVE IF TRANSMIT RF TRANSMIT RF RECEIVE IF Local Oscillator Main Local Oscillator AGC AGC Power Control Power Control RF Synth Lock Detect IF Synth Lock Detect Figure 2 : System Motherboar JTAG Helium 1Mx16 - 2 off 4MB SDRAM 2Mx8 2MB FlashROM 20MHz select Network and power connector RS-232 connector ATM-25 PHY 10BaseT XC4062 Xilinx (MAC) 10K100 (I/O) 10K100 (Correlator) 50MHz PLL reset DAC radio connector 25MHz clocks Control 10K100 (feed-fwd equaliser) 10K100 (feed-back equaliser) Utopia-2 ADC filtersfilters DAC mag.mag. 128KB SRAM 64Kx16 TxRx 32MHz EPLD Test Connectors DC-DC converters 48V DC +6V+5V +3V3 +2V5 +1V24 -6V

18 th August 2003 Telecommunication Certification Body Radio Frequency Investigation Ltd. Ewhurst Park Ramsdell Basingstoke Hampshire RG26 5RQ England Subject: Certification Application FCC ID: OJBAB-ACCESS-SU02 It is requested that the following information is to be held confidential on behalf of Axxcelera FCC Rules Part 0.459 refers. AB-Access Technical Report 1File 17 Pages Schematics 19 Files 19 Pages The above material contains technical data, which would customarily not be available to competitors. We do not want these documents to be accessible by the general public. Yours sincerely Michael Wilkinson Axxcelera Broadband Wireless UK Ltd

AB-ACCESS U-NII ISM TRANSCEIVER SUBSCRIBER UNIT FCC ID: OJBAB-ACCESS-SU02 CANADA: 4570A-1032091A This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept interference received, including interference that may cause undesired operation INPUT POWER: 48VDC, 625mA OPERATING TEMP:-20 to +50C MADE IN USA BY AXXCELERA BROADBAND WIRELESS, INC. Santa Barbara, CA 10001467 Rev 130