Hi Guys,
I read this post and I have great concerns. Maybe in bad cases you can get interferences from the ignition via the Powerboxes or Emcotecs to the receivers.
Both should block this bad signals, but ignitions pull large current peaks with high frequencies, so some of the hightec receivers may cause problems - the controller may crash.
The Powerbox has additional ferrit rings, so it may work, but there is no guaranty.

The new DIGI-SWITCH from PowerBox-Systems and a light wight LiPo will be best for ignitions and safety.