Long Range with CC2640R2F

with Espen Wium & Fredrik Kervel


Date: January 20, 2017

Three key questions you will be able to answer after viewing this video:

Q 1. How long of a transmission range can be achieved with Bluetooth 5 long range mode?

We are showing 1.6km RF transmission range in this video using the 125kbps coded PHY available as part of the Bluetooth 5 specification. The hardware used is CC2640R2F wireless MCU LaunchPad™ development kit with +5dBm output power. Actual range for your product will depend on antenna performance and the environment where the range test takes place. The best method to ensure adequate range in your application is to try it out using our CC2640R2F LaunchPad kit.

Q 2. What is the difference between Bluetooth 5 long range mode and regular Bluetooth low energy RF transmission?

Bluetooth 5 long range mode (called “Coded PHYs” in the Bluetooth 5 specification) is a coded physical layer with 125kbps data rate, which is 8 times less than the standard 1Mbps Bluetooth low energy RF format. On CC2640R2F, the reduced data rate provides 6dB better sensitivity on the receive side which results in longer RF transmission range.

Q 3. When should I use Bluetooth 5 long range mode?

Long range mode is useful in applications requiring whole-house coverage or longer outdoor RF range than typical Bluetooth applications. Building automation is an application which could benefit from long range mode, where the RF signal often has to pass through walls etc.

Additional information