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Weather information is commonly sent by radio in map form by one-way facsimile transmission. Two common parameters which must be set by the receiving station are:
Frequency shift (FS), and phase response pattern (PRP)
Black-mode signal (BMS), and frequency jitter tolerance (FJT)
Lines-per-inch (LPI), and primary scan direction (PSD)
Index of cooperation (IOC), and revolutions per minute (RPM)
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