Online Circuit Simulator with SPICE. Silicon Chip Online - UHF Prescaler For Frequency Counters. NOT ALL THAT long ago, almost the only items of domestic equipment operating on a frequency above 1GHz were microwave ovens, all of which use a magnetron operating at 2.45GHz (the frequency which causes maximum heating of water molecules).
But nowadays all kinds of equipment transmits and/or receives at frequencies above 1GHz. For example many cordless phones operate at frequencies around 2.4GHz, sharing these frequencies with wireless CCTV cameras, AV transmitters and receivers, security systems, remote access locking systems and baby monitors. Other items using frequencies in the 2.4GHz region include "WiFi" (802.11b & 802.11g) computer networking gear and "Bluetooth" wireless links for computer peripherals (802.11a wireless networking equipment operates on even higher frequencies, at about 5GHz).
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