[AMRadio] NNNN

Geoff w5omr at satx.rr.com
Sat Jul 23 22:23:44 EDT 2005

Robert Lawson wrote:

> Fellows,
> Where does the text "NNNN" originate (radio history) in text messages 
> below the "signature" line? I see NNNN used sometimes, depending on 
> the particular NWS forecaster, with the National Weather Service text 
> messages about active tropical storms/hurricanes (which I might add, 
> seem to be frequenting my area lately HI).  Also there is sometimes 
> the "$$" being used along with the "NNNN"
> Just wondering.
> Regards,
> Robert WPE4FGR W4RL Pensacola Florida

a hold-over from CW traffic-handling days that meant "No more" when 
passing traffic.

Teletype (RTTY) operators carried it over, when they started pounding on 
somewhere in the '50's, when passing traffic over ham-radio was still 
'en vogue'.

today, when you hear the packet bursts of the Emergency Broadcast System 
you to the fact of either a Test, or an actual emergency, the 3 short 
bursts at the end are
N N N (no more)

That's about the best I can do, for a description.

Anyone else?

73 = Best Regards,

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