Nick, There's nothing in the manual on N.F., everything else, freq range is 420-450 MHz, draws 200mA, needs +9 to +15V, will feedthru' 100W, gain is said to be >15db. It says it has a low noise Ga-fet, suggest you email Icom, they're usually pretty responsive. John -- John Mc Hugh, KU4GY Coordinator for Amateur Radio National Hurricane Center, W4EHW Miami, Florida Home Page: http://www.fiu.edu/orgs/w4ehw/