i turn electronic devices 10000 feet freewheelin i respond

1 modern airliners adequately shielded spurious signals hand held devices use laptop 35000 feet theres reason shouldnt able use 9000 feet

2 i used sony icf7600 portable receiver headphones cross country flight number fm signals bouncing plane staggering i didnt try short wave long wave reality bombarded signals various strengths frequencies time turn radio night scan local stations youll i mean ham radio operators know fcc knows airline design engineers know 

3 wasnt cell phone signals brought united flight 93 9/11