Middlesex County Sheriff Department

• Middlesex County Sheriff Website

Frequency	Tone	Usage
866.5500R	131.8	Billerica House of Correction
???	???	Cambridge Jail
45.9400	D-023	Billerica Transport
46.0200	D-023	Billerica Transport
MSP Trunk	TG 37040	Statewide Correctional Facility Transportation

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