[Tinyos-help] 20% Packet loss :(

[Faisal Aslam]

Hi,

I have an application for different kinds of motes (i.e. mica2, micaz, 
telosb). A mote broadcast a packet after every 15 seconds. However, we 
have a packet loss of around 20%. The application is multi-hop hence a 
packet loss has worse effects. We have the similar packet loss if we 
test the application with only one sender and one receiver. Hence we do 
not think these losses are due to collisions.
The sendDone is called every time with success hence we also know the 
packets are getting send successfully always.
I have three questions. (1) Is that normal to loss 20% of packet while 
packet broadcast even if there is one sender and one receiver in a hop 
distance. (2) What can be the reasons of packet loss with only one 
sender and receiver (3) and how can we reduce packet loss.

I will be very thankful with your reply.

best regards,
Faisal