Federal Harris County (TX)
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Unidentified Frequencies
Unidentified federal frequencies monitored in Harris County, Texas:
VHF-High
141.6125 FFF NAC encrypted? 162.2375 analog, CC hit around the Eastex and 610, informal conversation 162.7875 M 839 NAC Marshals? 163.05 BM? 293 NAC Coast Guard? Ch. CG112? encrypted 163.1 M DES 163.65 052 NAC ICE? P25 encrypted (heard during FBI fugitive search in Fort Bend County area) 163.7 M 206.5 PL voice 163.8125 M P25 encrypted 164.55 M OCDETF? DES 164.625 R 107.2 PL Fish and Wildlife Service? analog voice 165.025 M CSQ heard during Hurricane Gustav 165.6375 M 100.0 PL ? 165.825 M 060 NAC ICE? (used during NCAA Final Four 2011) 165.95 R? 006 NAC IRS? 166.4625 M CSQ Federal Common (analog unencrypted and DES encryption) 166.5125 M 001 NAC Secret Service/WHCA? 166.5875 M 100.0 PL CBP Net 3 Input?, Delta unit calling Charlie-100 (input? output not heard) 167.0375 M 001 NAC USSS Presidential Detail? (heard in days before Obama visit) 167.5125 M? FBI? DES? 167.5125 R? 167.9 PL FBI? lots of key-ups with weak signal (same time as 173.025), feedback/squeaking, weak voice 167.5375 M FBI? DES 168.35 M DES, analog voice 168.35 M P25? 168.525 S VAMC? Paging Data 168.6125 M very weak/broken voice 168.7 M CSQ National Incident Radio Support Cache (NIRSC) Command 1? - analog voice and DES, surveillance 168.8625 M OCDETF? DES 168.925 R 167.9 PL reported in MT Fed Files 169.6375 data bursts 170.025 R? 167.9 PL FBI? weak, open mic/keyed-up dead air/static 170.725 M analog simplex voice during Hurricane Gustav 170.8 M 293 NAC Marshals? encrypted 170.825 M FBI? DES 170.9125 M? 167 NAC FBI? 171.025 R IFLOWS/Harris County Flood Alert System - League City repeater output, unconfirmed 171.075 M? CBP? input to 169.45? 171.175 R 167.9 PL FBI? near IAH airport, open mic/keyed-up dead air 171.175 R? 167 NAC FBI? 171.2 M DOE? NEST? - brief analog voice (NCAA Final Four 2011), also P25 or intermod? 171.3125 trunked control channel? very weak in Houston during good conditions 172.0625 M? P25? 172.3 P25? 172.9 R CSQ somewhere near IAH airport 172.925 R? 293 NAC FAA? 172.95 R? 293 NAC FAA? 173.025 R? 167.9 PL FBI? lots of key-ups with weak signal (same time as 167.5125), DES 173.05 S? chirping sound data 173.1 R? 167.9 PL FBI? open mic dead air, DES 173.1625 R? P25? 173.875 R 94.8 PL US Capitol Police "Travel 3" (Giffords detail at Hermann TIRR) 173.8875 M? ATFE Tactical 6? - P25 encrypted
The Organized Crime Drug Enforcement Task Force (OCDETF) is a multi-agency federal task force (commonly associated with the FBI although many other agencies participate). The DES frequencies above remain in use after the FBI's conversion to P25 in the Houston area. These frequencies may be used by OCDETF because they may be maintained for compatibility with other agencies on VHF-high that have not yet converted to P25 (e.g., CBP/ICE). Some of these frequencies are also reported as nationwide FBI frequencies.
UHF
411.7875 M? 293 NAC Coast Guard? keyed-up for 3 seconds with a high pitch tone (NCAA Final Four 2011) 413.95 M? 293 NAC Federal Protective Service Region 7 Talk-Around? 414.5625 M 168 NAC encrypted 414.75 M 169 NAC encrypted
Federal Aviation
Bases
- Army National Guard (Apache helicopters) - Ellington International Airport (Houston)
- Army Reserve (Apache helicopters) - Lone Star Executive Airport (Conroe)
- CBP - Hooks Airport (Houston) as of January 2011 - source
- Coast Guard - Ellington International Airport (Houston)
- DEA - Lone Star Executive Airport (Conroe) - source
- FBI - West Houston Airport (Houston) - identified via monitoring
- NASA - Ellington International Airport (Houston)
CBP Aircraft
The following CBP aircraft have been noted operating the Houston region.
- N2734K - jet
- N5204G - helicopter
- N6001L - jet
- N810AM - helicopter
- N8142G - single engine turboprop
- N9085U - twin engine turboprop
Related Links
- Harris County Federal Frequencies - confirmed frequencies