NN1MF is the callsign of the Marshfield Fair Radio Club of Marshfield, Massachusetts. The club was set up by the late K1RB (Bob Burns) of Whitman, Massachusetts. Bob was a member of the Fair's Board of Directors responsible for Advertising, Media Relations, he was the Fair's Webmaster. The Marshfield Fair is an annual major Massachusetts agricultural fair conducted by the Marshfield Agricultural & Horticultural Society (a Massachusetts non-profit organization).

The annual fair is conducted in mid-August each year at fair grounds located of Route 3A in Marshfield, Massachusetts, about 20 miles south of Boston. During the Fair, there are signs on the Expressway showing directions to the Fair. We welcome visits when you are enjoying the Fair. Please bring a photocopy of your FCC license should you like to operate.

The Marshfield Fair Radio Club was organized in 2002 to provide exposure to amateur radio, radio history and Marshfield's "radio communications" history. That history includes the Coast Guard Radio Station (NMF) and the Fessenden Brant Rock Transmission site.

In the past amateur raio operations from the Fair have included: WA1NPO, K1RB, W1M and W1F.

The current trustee of the club is N1EA.

We look forward to working you from the "Marshfield Fair".