weak rc signal

[outbackmac]

I have not downloaded the latest firmware. but here latley ive noticed when flying at different altitudes my rc controller will flash weak rc signal. from 4 bars to 3. not sure if something is wrong?

 

[microraptor]

Did you adjust your antenna?

 

[outbackmac]

yes i have multiple directions. i did not notice this same issue when using my sons i pam nini