Originally Posted by
subaru73
I have ran ko for years and no problems but I use the euros radio
Ko propo Helios or Eurus has no issues.. But when I switch to Ko Propo EX-1 OMG I got issues one after another and finally gave up and switch to Airtronics M12 and couldn't be any happier. However my 9 year old Ko propo helios still rockin and my 6 years old son is using it now.