United States Marshals Service

The United States Marshals Service (USMS) is a federal law enforcement agency within the United States Department of Justice.

Court Security Channel Plan

NAME		TX FREQ		RX FREQ		TX NAC	RX NAC
CSO DIR		167.67500	167.67500	293	293
CSO RPTR 1	165.72500	170.75000	293	293
CSO RPTR 2	165.07500	170.75000	293	293
CSO RPTR 3	165.75000	170.73750	293	293
CSO RPTR 4	166.26250	173.80000	293	293
CSO RPTR 5	166.47500	173.11250	293	293
CSO RPTR 6	164.20000	171.26250	293	293
CSO RPTR 7	173.66250	170.75000	401	401
CSO RPTR 8	165.72500	170.73750	293	293
CSO RPTR 9	165.07500	170.73750	293	293
CSO RPTR 10	162.70000	170.75000	293	293
SDNY SSO	167.31250	167.31250	293	293
DCSC SSO	164.10000	164.10000	293	293
USMS A	        162.71250	170.80000	293	293
USMS B	        163.81250	170.85000	864	864
USMS C	        163.20000	173.12500	864	864

Old Nationwide Channel Plan

Chnl	Frequency	Input	License	Type	Tone Out	Tone In	Alpha Tag	Description	Mode	Tag
1	163.2000							Repeater
2	163.2000							Simplex
3	164.6000							Repeater
4	164.6000							Simplex

• Tones vary in different areas.
• Other frequencies are used in some areas.
• According to the IWN OIG REPORT The USMS primarily uses the FBI’s systems for its radio communications in some of the regions.

Related Links

• U.S. Marshals
• U.S. Marshals Service P25 TRS
• The Fed Files US Marshals Service frequency list

Return to Wiki page: Common Frequencies