Safety

Handheld Radios (HTs) Generally safe as is Low Battery Voltage, Enclosed Low Power gives low RF exposure Low Power gives low antenna voltage (16Vrms)

RF Exposure Non-Ionizing radiation Hazard is said to be Tissue Heating Microwaves – eyes most vulnerable

Maximum Permissible Exposure (MPE)

RF Exposure Duty Cycle

Thresholds for RF Evaluation Re-evaluate the station whenever an item of equipment is changed

To Reduce RF exposure: Relocate antennas Reduce Power Change frequency band Change antenna radiation pattern Change antenna heading

Electrical Hazards

Electrical Hazards P=IV=IE 1. High V, Low I 2. Low V, High I 3. High V, High I

Human Body Model

Human Body Model DO NOT TRY THIS AT HOME! A pair of copper wires was connected to a 120V wall plug. The extreme danger of this was explained and then a hotdog was used to short-circuit the wires. The hotdog was cooked and then later eaten by a participant. DO NOT TRY THIS AT HOME!

Current in the Body