Mode ANTplus sensors

ANT+ sensors on 2457 MHz (and other ANT networks on their own channel): heart rate straps and watches, bike speed, cadence and power sensors, footpods, environment sensors, as a watch or bike computer hears them: 1.

Group	IoT & sensors
Default sample rate	4 Msps
In the mode list	ANT+ sensors on 2457 MHz (and other ANT networks on their own...

Step-by-step: Tutorial-ANTplus-sensors

What ANT+ sensors is

ANT+ is the low-power wireless protocol of many heart-rate straps, bike sensors, power meters and fitness watches, on 2457 MHz.

Frequencies and settings

2457 MHz (ANT+), or any ANT channel 2400 - 2524 MHz, 4 Msps (a radio that reaches 2.4 GHz).

Setting	Value
Tuning range of the mode table	2400 to 2524 MHz
Sample rate asked	4 Msps
Lowest working rate	4 Msps
Channel width	2 MHz

OnAir takes any frequency you type; the numbers above are the mode's starting point and the range its table describes. In the app the shortcut label is ANT+ sensors on 2457 MHz (and other ANT networks on their own....

What OnAir shows

Heart rate straps and watches, bike speed / cadence / power sensors, footpods and environment sensors: device number and type, the data pages (heart rate with beat count and R-R interval, plotted over time; power, cadence, speed, temperature), manufacturer, serial and battery. Receive only: the open broadcasts a watch hears, nothing is sent or paired.

Tips and caveats

• Checked with generated signals and impairments; recordings of real signals welcome.
• Which radio: No: this mode needs a radio that samples at 4 Msps or more, and an RTL-SDR reaches about 2.4 Msps.
• Try it without a radio: most modes include a built-in synthetic test signal, so you can open the screen and try the controls first.
• Receiving and the law: This mode is passive. It only receives, never connects, pairs or joins networks, and never decrypts payloads. Check the rules where you live. See Legal.

Related pages

• All modes, IoT & sensors
• Supported radios, Troubleshooting, FAQ
• More in IoT & sensors: ISM sensors, LoRaWAN, Meshtastic, MeshCore, Bluetooth LE, Zigbee / 802.15.4, Wi-Fi HaLow (802.11ah), DECT cordless phones, Wi-SUN FAN, LoRa (raw), Wi-Fi networks