ocr: RF Infrared Narrow Spread Point Diftuse bond spectrum to point, (Photanics) (Motorola) (A.T.Schindler InfrOLAN) Direct Frequency sequente hopping Prexim/RongeLAN2) Single Dual frequency frequency (NCR, Windota) Telesystems SLW, Proxim/RangelAN) Figure: 1.