John Salmi, KB1MGI writes on the Foxhunting list on June 7 at 5:46 PM ET:
http://ma-chelmsford.
I placed the 2-meter 146.565 DTMF tone 2 to activate the Fox box in the Russell Mill Conservation land in South East Chelmsford.
See link above for a map.
Easy find park at the end of Noble Dr trail access.
Good Luck.