On Sat, 26 Nov 2005 15:04:20 -0500, "Robert11" wrote:

Hello:

Re the Coast Guard Helo S&R freq of 164.55

This is narrow fm, right ?

Right.

USCG aircraft will only use AM in the civilian (118-134) and military (225-400)
aircraft bands. On the HF bands they'll use USB. On the VHF marine
radiotelephone channels - and on government freqs such as 164.55 - you'll hear
narrowband FM,

John Kasupski, Tonawanda, New York
Amateur Radio (KC2HMZ), SWL/Scanner Monitoring (KNY2VS)
zIRC #monitor Admin