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The TeensyWiNo radio range depends on:
- the antenna,
- the transmission power and the modulation,
- the environment: outdoor, indoor (walls, etc.).
See the TeensyWiNo antenna tutorial to choose the appropriate antenna.
You may also set the appropriate txPower and modulation. With the following configuration, a indoor range of 30m can be achieved with the DIY spring antenna
rf22.setTxPower(4); rf22.setModemConfig(RH_RF22::GFSK_Rb125Fd125); rf22.setFrequency(434.0, 0.05);
If you use narrow bandwidth such as GFSK_Rb2_4Fd36, a range for 200m can be achieved, even in indoor environments.