Xbee is a Zigbee based protocol that we use for our telemetry system. A comparison between all the models is found on Sparkfun and on the
Specs and Documentation
Mini-USB Adapters:
https://www.parallax.com/product/32400
XBee-Pro 900 XSC S3B (XBP9B-0DPST-001)
- RF Data Rate: 10-20 kbps
- Frequency: 900Mhz
- Power: Up to 250mW (software selectable)
- Range: 610m Indoor, 14km with dipole antenna, 45km with high gain antenna
- Supply Voltage: 2.4 to 3.6 VDC
- Product Link: https://www.parallax.com/product/32411
- Datasheet: https://cdn.sparkfun.com/datasheets/Wireless/Zigbee/90002173_N.pdf or Xbee900ProS3BDatasheet.pdf
XBee-PRO S1 802.15.4 extended-range module w/ RPSMA connector (XBP24-ASI-001)
- RF Data Rate: 250 kbps
- Frequency: 2.4Ghz
- Power: 60mW
- Range: 100m indoor, 1.6km outdoor
- Supply Voltage: 2.8 - 3.4VDC
- Retrieved from: https://www.digi.com/pdf/ds_xbeemultipointmodules.pdf
- Datasheet: https://cdn-shop.adafruit.com/datasheets/Xbee+series+1+DS.pdf or XbeeSeries1Datasheet.pdf
Antennas:
- Smaller ground antenna (for testing):
- Gain: 2dBi
- RPSMA female connector
- Link: https://www.parallax.com/product/32410
- Larger Antenna (on plane)
- Dont know model, or gain, or even if its a 900Mhz
- Dont know model, or gain, or even if its a 900Mhz
Which Xbee
During development, its ok to use the 2.4Ghz xbee. During flight tests its extremely important to use the S3B 900Mhz modules, as the 2.4Ghz will interfere with the DJI light bridge connection. In addition the 900Mhz modules provide a longer range (should be at least 10km).
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