My XBEE S3 PRO loses some packets when transmitting 800 meters away from the XBEE Pair. Even though we used a 7 dbi car antenna with sma jack. we used a jack converter from sma to rp sma (if that counts) since xbee has a rp sma connector. do we need a higher dbi antenna? or is 7 dbi just enough? we are unsure if should we change parts (antenna) or there is some problem that we do not know about.

  • \$\begingroup\$ Losing "some packets" is quite normal for radio links. While you don't want to have a suboptimal antenna situation, even with a great one you need to use the radio in a way that can survive heavy packet loss. \$\endgroup\$ – Chris Stratton Jan 23 at 5:14
  • \$\begingroup\$ Hi sorry I meant it loses comms to another XBEE. it starts to lose packets nearing 800 to losing the signal beyond 800. @ChrisStratton \$\endgroup\$ – jee cuevas Jan 23 at 5:30
  • \$\begingroup\$ Maybe you should use a scheme more tolerant of packet loss. What kind of conditions are you trying to use this in, ie where are the 800 meters? What is the nature of your power source? Have you decoupled all digital signals from the radio? \$\endgroup\$ – Chris Stratton Jan 23 at 5:32
  • \$\begingroup\$ Are those 800 meters outdoors, with line of sight between the two antennas, or indoors or with any obstacles? What are the power settings, which frequency are you using, what’s the sensitivity of the receiver, what RSSI and SNR are you measuring...? \$\endgroup\$ – jcaron Jan 23 at 8:13
  • \$\begingroup\$ @ChrisStratton The one that powers our device is a USB-To-TTL 5v. It is outdoors and in an open field. Near the ocean(if that counts). To be specific, an abandoned port with nothing to block the space between the 2 XBEE's. \$\endgroup\$ – jee cuevas Jan 23 at 9:45

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