Motorola DTR series 900 MHz frequency hopping hopsets

From HFUnderground

Revision as of 14:30, 21 February 2023

Part 15 band - Motorola literature, sales paperwork and manuals list the frequency as "900 MHz ISM band", it is an ISM band and also the the 33cm amateur radio band shared spectrum. Usually simply called the 900 MHz band or the 900 band…or 915 MHz for LoRa folks and other applications. Fixed services, radio-location, transponders, and specialized land mobile systems. (Part 90) systems use this band as well.

900 MHz band, used by services operating under Part 15, Part 18, Part 90 and Part 97 of the FCC rules.

These radios operate with 50 kHz channel spacing and 8-level FSK digital FHSS 902-928 MHz band (channels start at 902.525 MHz and continue to 927.475 MHz, 525 kHz from band edges for a total of 500 available channels at 50 kHz channel spacing), in compliance with Part 15 of the FCC rules - specifically 47 CFR 15.247. The DTR 900 MHz digital business radios offer performance comparable with UHF walkie-talkies as far as in-building coverage goes.

Hopsets 10 frequency sets of 50 frequencies each. Spacing within each hopset is 500 kHz. Since each hopset is 50 kHz offset from the previous hopset, the overall channel spacing is 50 kHz.

• Hopset 1 - 902.525 MHz, 903.025 MHz, 903.525 MHz, 904.025 MHz, 904.525 MHz, 905.025 MHz, 905.525 MHz, 906.025 MHz, 926.525 MHz, 907.025 MHz, 907.525 MHz, 908.025 MHz, 908.525 MHz, 909.025 MHz, 909.525 MHz, 910.025 MHz, 910.525 MHz, 911.025 MHz, 911.525 MHz, 912.025 MHz, 912.525 MHz, 913.025 MHz, 913.525 MHz, 914.025 MHz, 914.525 MHz, 915.025 MHz, 915.525 MHz, 916.025 MHz, 916.525 MHz, 917.025 MHz, 917.525 MHz, 918.025 MHz, 918.525 MHz, 919.025 MHz, 919.525 MHz, 920.025 MHz, 920.525 MHz, 921.025 MHz, 921.525 MHz, 922.025 MHz, 922.525 MHz, 923.025 MHz, 923.525 MHz, 924.025 MHz, 924.525 MHz, 925.025 MHz, 925.525 MHz, 926.025 MHz, 926.525 MHz, 927.025 MHz

• Hopset 2 - 902.575 MHz, 903.075 MHz, 903.575 MHz, 904.075 MHz, 904.575 MHz, 905.075 MHz, 905.575 MHz, 906.075 MHz, 926.575 MHz, 907.075 MHz, 907.575 MHz, 908.075 MHz, 908.575 MHz, 909.075 MHz, 909.575 MHz, 910.075 MHz, 910.575 MHz, 911.075 MHz, 911.575 MHz, 912.075 MHz, 912.575 MHz, 913.075 MHz, 913.575 MHz, 914.075 MHz, 914.575 MHz, 915.075 MHz, 915.575 MHz, 916.075 MHz, 916.575 MHz, 917.075 MHz, 917.575 MHz, 918.075 MHz, 918.575 MHz, 919.075 MHz, 919.575 MHz, 920.075 MHz, 920.575 MHz, 921.075 MHz, 921.575 MHz, 922.075 MHz, 922.575 MHz, 923.075 MHz, 923.575 MHz, 924.075 MHz, 924.575 MHz, 925.075 MHz, 925.575 MHz, 926.075 MHz, 926.575 MHz, 927.075 MHz

• Hopset 3 902.625 MHz 903.125 MHz, 903.625 MHz, 904.125 MHz, 904.625 MHz, 905.125 MHz, 905.625 MHz, 906.125 MHz, 926.625 MHz, 907.125 MHz, 907.625 MHz, 908.125 MHz, 908.625 MHz, 909.125 MHz, 909.625 MHz, 910.125 MHz, 910.625 MHz, 911.125 MHz, 911.625 MHz, 912.125 MHz, 912.625 MHz, 913.125 MHz, 913.625 MHz, 914.125 MHz, 914.625 MHz, 915.125 MHz, 915.625 MHz, 916.125 MHz, 916.625 MHz, 917.125 MHz, 917.625 MHz, 918.125 MHz, 918.625 MHz, 919.125 MHz, 919.625 MHz, 920.125 MHz, 920.625 MHz, 921.125 MHz, 921.625 MHz, 922.125 MHz, 922.625 MHz, 923.125 MHz, 923.625 MHz, 924.125 MHz, 924.625 MHz, 925.125 MHz, 925.625 MHz, 926.125 MHz, 926.625 MHz, 927.125 MHz

• Hopset 4 902.675 MHz…927.175 MHz

• Hopset 5 902.725…927.225 MHz

• Hopset 6 902.775…927.275 MHz

• Hopset 7 902.825…927.325 MHz

• Hopset 8 902.875…927.375 MHz

• Hopset 9 902.925….927.425 MHz

• Hopset 10 902.975, 903.475 MHz, 926.975 MHz, 927.475 MHz