Loosing remote signal


#1

today i tried efoiling on a new spot, i had troubles: motor cutting off at full speed… so i took apart everything and it was perfect

after several test i found out i was loosing signal at different place and overall the signal was bad, esc was cutting off then back on

signal was cut at 50cm

i use this remote:
http://www.maytech.cn/en/product/e-skateboard/e-skateboard-remote-controller

any idea how can i “boost” the signal ?