by David Tow and Emily Cheng

Parts

• Surface Mount 433.92MHS SAW-Stabilized OOK Transmitter from Radiotronix: $2.24. The mechanical layout of the device is shown below.

• Low-Cost 433.92 Super-Regen ASK/OOK Receiver from Radiotronix: $3.53.  The mechanical drawing and the pin-out diagrams can be found below.

• LM340/LM78XX Series 3-Terminal Positive Regulator from National Semiconductor: No cost.  We got this from the lab.  The diagram of the regular is shown below.

• LMC7111 Tiny CMOS Operational Amplifier from National semiconductor: No Cost. We got this from the lab. The connection diagram of the op-amp can be found below.