Transceiver Block Diagram

Transmitter Modulator Power Amplifier Driver Stages Power Stage Antenna Oscillator Signal

Receiver Low Noise Amplifier Gain-Stage Amplifier Filter Antenna Oscillator Mixer Filter

Transceiver = Transmitter + Receiver Modulator Power Amplifier Antenna Oscillator Signal Low Noise Amplifier Filter Mixer Filter

Tokyo Institute of Technology  Uplink 144 MHz 144 MHz DJ-C1 (ALINCO) DJ-C1 (ALINCO)  Downlink 430 MHz 430 MHz DJ-C4 (ALINCO) DJ-C4 (ALINCO) DJ-C1 DJ-C4

Taylor University  Spread Spectrum Radio 900 ~ 930 MHz 900 ~ 930 MHz

Stanford - Sapphire  Modified Hamtronics Kits. Transmitter Transmitter MHz437.1 MHz 2 W broadcast power2 W broadcast power Receiver Receiver MHz MHz

Stanford – OPAL  Off-the-shelf units provided by NavSymm Inc. Uplink: MHz Uplink: MHz Downlink: MHz Downlink: MHz

StenSat Group

T okyo I nstitute of T echnology