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USB dial (MHz): 0.136, 0.4742, 1.8366, 3.5686, 5.2872, 5.3647, 7.0386, 10.1387, 13.5539, 14.0956, 18.1046, 21.0946, 24.9246, 28.1246, 50.293, 70.091, 144.489, 432.300, 1296.500

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How does WSPR fit FCC Rules?

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Last post

Tue, 2012/01/31 - 22:18

#1

AC0ZL

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Last seen: 6 years 7 months ago

Joined: 2012/01/26 - 23:33

How does WSPR fit FCC Rules?

The recent WSPR story in Nuts & Volts suggested an interesting activity and reminded me that I've been intending to get licensed.

As I have looked at license manuals, I can't find a spot in the FCC rules that permits WSPR. Part 97.111(b) defines a list of permitted, short, one way transmissions. WSPR does not appear to fit the list because it is a list of "short" transmissions.

Part 97.203 addresses beacons and permitted beacon frequencies. According to this paragraph, no beacons are permitted below 28.2 MHz.

What an I missing and what loophole allows WSPR transmissions 24 hours per day?

Claude