# high packet loss

**URL:** <https://forums.digi.com/t/high-packet-loss/1303>\
**Category:** XBee - 802.15.4\
**Created:** [February 18, 2009, 12:00am UTC](https://forums.digi.com/t/high-packet-loss/1303 "2009-02-18T00:00:03Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![olaf](https://avatars.discourse-cdn.com/v4/letter/o/73ab20/32.png) [@olaf](https://forums.digi.com/u/olaf)\
**Post date:** [February 18, 2009, 12:00am UTC](https://forums.digi.com/t/high-packet-loss/1303/1 "2009-02-18T00:00:03Z")

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hi

i have 2 xbee pro modules (HV 1842) communicating with each other  
one of them sends about 10 bytes every 50ms at 78125 baud  
in about 30% of the cases i dont get an ack back  
both have same channels and 16 bit addresses of each other set  
firmware 10CD  
API mode

they are lying next to each other  
RSSI is at about 0x20 so this should not be the problem

already tried changing channels and RO but did not help

any ideas?

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<div class="post-metadata">

**Author:** ![olaf](https://avatars.discourse-cdn.com/v4/letter/o/73ab20/32.png) [@olaf](https://forums.digi.com/u/olaf)\
**Post date:** [February 19, 2009, 9:47pm UTC](https://forums.digi.com/t/high-packet-loss/1303/2 "2009-02-19T21:47:30Z")

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if i connect my bluetooth module to the same power supply im getting \<1% packet loss

seems like unstable voltage …

solved 🙂