Data Sheet

Figure 1.2: Block diagram showing the major subsystems comprising Model RF220UF1

Selecting an Antenna

The RF220UF1 uses the on-board compact F antenna by default. If you wish to use an external U.FL antenna with

your application, you will need to set bit 0x0010 of NV ID 64 to 1 and reboot your node. This is a one-time change that

will persist through reboots and program changes. To revert to the on-board antenna, change bit 0x0010 of NV ID

64 back to 0 and reboot the node.

Antenna Gain Performance

NOTE: Antenna gain performance information is based on information from the individual companies at the

time this document's release. For added assurance, it's best to obtain antenna performance information directly

from that antenna's manufacturer.