David,

Having used both JR synthesised and crystal controlled receivers with every choke and filter device available and still gettng the odd glitch I went 2.4GHz last year and have not had one glitch since in 2 different 10 cell F3A models.

I'm using a Spektrum module in a JR10X transmitter and AR9000 receivers with 2 cell lipo and Jaccio regulator. Its the ultimate cure!

Malcolm