Radio noise and Iridium plugs
This note came through on the Jabiru engines group and I thought it may be of interest to you all:
"I have a 3300 on a pusher, with the VHF antenna embedded in the vertical fin. The ignition noise dramatically limited communication from distant stations. I have a VAL Com 2000 which seems not to have any pulse limiting circuitry at all.
So I found the magnecore cables and installed the 8.5mm ones. This helped significantly, but the static whas still there. Then, based on information from this forum, I bought NKG iridium resistor plugs. To do an A/B comparison I put resistor plugs on one mag only. The difference was remarkable. I had no discernible noise on the resistor plugs.
So now I have them all installed and am virtually noise free. Thanks to all who posted on the subject."