Don't forget to connect an antenna to the TeensyWiNo shield. The shield does not embed an integrated antenna.
There are 3 antenna options:
- the 18cm UFL pigtail, which ends with a SMA connector: the SMA antenna must be connected
- a 1/4 wavelength wire (17.3cm for the 433MHz band) soldered to the TeensyWiNo shield
- a DIY spring antenna made with mono-wired electric cable: 9mm diameter, 7 turns, soldered to the TeensyWiNo shield
See TeensyWiNo antenna tutorial on the website.
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
If you use narrow bandwidth such as
GFSK_Rb2_4Fd36, a range for 200m can be achieved, even in indoor environments.