Twin State Mutual Aid

Twin State is Dispatched by Grafton County Sheriff's office in Haverhill
They dispatch Northern Grafton County, and some Vermont Fire Departments
The Unit ID's use the name of their towns then say their unit type (which is a letter) and then their number

Radio System

Channel	Frequency	Type	Tone	Notes	Confirmation/ReConfirmation
1	154.4000	S	136.5	Dispatch	2019.10.21 ecps92
2	---		---	Local Frequency
3	---		---	Local Frequency
4	154.2950	S	136.5	Fireground
5	154.2800	S	136.5	Statewide Fireground
6	154.2350		136.5	Fireground
7	154.1600		173.8	Fireground
	155.6775	R
	451.3625	S	114.8	Downlink (154.4000) from Remote RX site [?]	2014.06.22 LTE4NFD
	453.3625	S	141.3	Downlink (154.4000) from Remote RX site [Mann Hill] back to Grafton SO	2014.07.12 ecps92
	451.7500	S		Downlink (154.4000) from Remote RX Site [Haverhill] back to Grafton SO
	451.7500	S		Downlink (154.4000) from Remote RX Site [West Newbury VT] back to Grafton SO
	458.2625	S	D606	Downlink (154.4000) from Remote RX Site [Franconia] back to Grafton SO	2019.10.21 ecps92
	458.6375	S	D606	Downlink (154.4000) from Remote RX Site [Haverhill] back to Grafton SO	2019.10.21 ecps92
	465.3625	S		Downlink (?? Mhz) from Remote RX Site [West Newbury VT] back to Grafton SO