Tip-Mass Design Layout COMM 802.11b Main Satellite Flight Computer 5 V Muti-Plex RS-232 Trigger Power Serial Camera 5 V Deploy Sensor

Communication system Main sat module Tip Mass Standard WIFI LAN card Processor with a PCMCI slot for WIFI card Digital camera 802.11 wifi card 802.11 air interface Wiser 2400 unit (OTC wireless) RS-232 serial interface port of WISER 2400 Serial RS232 port of camera 802.11 interface port of WISER 2400 Main sat module Tip Mass Standard WIFI LAN card Wiser 2400 is the interface between the wireless 802.11 link and the RS232 serial link with the camera

Features and Specifications-WISER 2400 Operates In the ISM band (2.4GHz – 2.495GHz), no FCC license required No driver on the host device is required for radio operation Radio operation is independent of the operating system on the host equipment or device as long as a RS232 port is properly supported Industry standard IEEE 802.11b-compliant wireless interface; Interoperable Client radios from other vendors ( in our case a Wireless LAN card) Plug and play device; Once configured using a utility software, the configuration settings and other information is stored in non-volatile memory. Specs Frequency: ISM band (2.4GHz – 2.495GHz) Link Distance: ~1200 ft in open space Voltage, current: 5v, max 480mA (in transmit mode) Data rate: Capable of supporting up to 115K baud (possible limitation on the digital camera side to transmit data) Weight : 3.7ounces:the radio with case,1.7 ounces is the weight of the case Antenna type: Integrated dipole antenna (omnidirectional) with ~2dBi gain

Link Budget Friss Fromula (Free space loss) Lp(dB)= 92,45 + 20log10 F+20 LOG10d  For 100m L= 80dB at 2.45GHz

Power Drain Beacons transmitted every 100ms by AP (Infrastructure mode) Effective time of transmission of beacon frames ~ 3.8sec per hour Possible circuitry to cut off power at times of ‘No use’