ORIGINAL: DAN REISS
Use this one.
http://www.smart-fly.com/Products/Ignition/ignition.htm
If the optic transmitter and optic receiver are not seperated by a fiber optic line, your radio's receiver it's not truly isolated from radio frequency interference weather the other kind work or not. Dan
There are a number of threads on this subject here on RCU. Having read through several I came to the same decision and went with the smart fly unit. They have worked well for me.