A while back they had low power repeaters set up around 464.500 and 464.550
Best to do a search in that area
Or if you are at the grounds, use the close-call mode if you have it on your radio.
EDIT:
Searched on the FCC database- found this:
http://www.radioreference.com/apps/db/?fccCallsign=WPYD824
1 452.65000000 11K2F3E FB2 1 0 45.000 41.47017 -72.68247 DURHAM MIDDLESEX CT
1 462.16250000 11K2F3E FB2 1 0 45.000 41.47017 -72.68247 DURHAM MIDDLESEX CT
1 463.28750000 11K2F3E FB2 1 0 45.000 41.47017 -72.68247 DURHAM MIDDLESEX CT
2 452.65000000 11K2F3E MO 200 0 5.000 41.47017 -72.68247 DURHAM MIDDLESEX CT
2 457.65000000 11K2F3E MO 200 0 5.000 41.47017 -72.68247 DURHAM MIDDLESEX CT
2 462.16250000 11K2F3E MO 200 0 5.000 41.47017 -72.68247 DURHAM MIDDLESEX CT
2 463.28750000 11K2F3E MO 200 0 5.000 41.47017 -72.68247 DURHAM MIDDLESEX CT
2 467.16250000 11K2F3E MO 200 0 5.000 41.47017 -72.68247 DURHAM MIDDLESEX CT
2 468.28750000 11K2F3E MO 200 0 5.000 41.47017 -72.68247 DURHAM MIDDLESEX CT
looks like the fair is already over though. Just got back from vacation, sorry I couldn't help you earlier.
Bob