Wireless: What are the WBS-670/680 System Frequency Selection Rules?
The frequency selection rules described below refer primarily to the user programmable groups 25 to 36. The preprogramed groups 1 to 24 already use the appropriate frequency selection rules.
Frequency Spacing -----> Keep all WBS/WTR receive and transmit frequencies at least 300kHz away from each other, 400kHz preferred. Both the transmitters and receivers should be at least 400kHz away from other RF equipment.
IM Products ---------------> 2 transmitter 3rd orders by at least 100kHz (200kHz preferred) 3 transmitter 3rd orders by at least 50kHz (100kHz preferred) 2 transmitter 5th orders by at least 50kHz (100kHz preferred)
Tx Sidebands -------------> Avoid base and beltpack carrier sidebands: +/- 200kHz, +/- 400 and +/- 600kHz. Keep at least 50kHz away from these frequencies.
Bandwidths ----------------> Transmitter bandwidth = 150kHz Receiver bandpass = 230kHz
Frequency Spacing -----> Keep all WBS/WTR receive and transmit frequencies at least 300kHz away from each other, 400kHz preferred. Both the transmitters and receivers should be at least 400kHz away from other RF equipment.
IM Products ---------------> 2 transmitter 3rd orders by at least 100kHz (200kHz preferred) 3 transmitter 3rd orders by at least 50kHz (100kHz preferred) 2 transmitter 5th orders by at least 50kHz (100kHz preferred)
Tx Sidebands -------------> Avoid base and beltpack carrier sidebands: +/- 200kHz, +/- 400 and +/- 600kHz. Keep at least 50kHz away from these frequencies.
Bandwidths ----------------> Transmitter bandwidth = 150kHz Receiver bandpass = 230kHz
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