On Fri, 30 May 2008 06:48:09 -0400, Cubdriver usenet AT danford DOT
net wrote in :

I use a handheld in a J-3 Cub, and ignition noise makes it
impractical for me to broadcast.

I wasn't aware that ignition noise affected radio broadcast
transmissions. I'm familiar with radio RECEPTION being compromised by
the broad spectrum of electromagnetic waves resulting from an
electrical spark, but not radio transmission.