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Table 4 An overview of the recently added frequency bands for SRDs in the 874 to 876 MHz and 915 to 921 MHz range [32]

From: Impact of EU duty cycle and transmission power limitations for sub-GHz LPWAN SRDs: an overview and future challenges

Nr.

Start freq. (MHz)

End freq. (MHz)

Bandwidth (MHz)

Category

Max TX power (mW) (e.r.p.)

Duty cycle

1

874

874.4

0.4

Non-specific short-range devices

500

Polite access, and 10% (access point) or 2.5% (other devices)

2

917.4

919.4

2

Wideband data

25

Polite access, and 10% (access point) or 2.8% (other devices)

3

916.1

918.9

2.8

RFID

4000

Polite access only, no duty cycle

4

917.3

918.9

1.6

Non-specific short-range devices

500

Polite access, and 10% (access point) or 2.5% (other devices)

5

917.4

919.4

2

Non-specific short-range devices

25

Polite access and 1%