Boston has a lot of federal monitoring action so be sure and bring a scanner if you visit there. Here is a quick rundown of what I logged during my stay, as well as some active frequencies that some good friends in the area shared with me during my time in the area:
162.2125 N293
163.2625 N293 VA Medical Center
163.7000 N169 ICE NAT TAC 1
165.3750 N001 US Secret Service CHARLIE
165.7875 N001 US Secret Service BAKER
166.9500 N109 National Parks Boston Area
167.4375 N167 Boston FBI A-5 & BAPERN link
167.4625 N070 Boston FBI
167.4875 N167 Boston FBI Field Office A-2
167.5375 N167 FBI D-3
167.5625 N167 FBI D-4
167.7875 N167 Boston FBI Field Office A-3
167.9500 N109 National Parks USS Constitution
168.7625 N167 Boston FBI Field Office
169.6250 N167 Boston FBI Field Office A-4
170.7750 N319 CBP
171.4375 N167 FBI F-1
172.0750 N167 Boston FBI Field Office A-1
345.0000 AM US Coast Guard Air Ops Primary
409.5250 N293 Department of State Diplomatic Security
418.7500 N156 DEA UHF F-3
As usual, the Boston area did not disappoint when it comes to radio monitoring!






