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Federal Harris County (TX)


Contents

Itinerant Frequencies

164.7375 M   293 NAC Border Patrol Tactical 1 - surveillance?
166.5625 M  192.8 PL Department of Agriculture Wildlife Services - distributing rabies
                       vaccine from helicopters in Fort Bend County area 9/17/2013
168.3500 M   100 NAC Department of Health and Human Services Secretary protective
                       detail
173.8750 R   94.8 PL US Capitol Police "Travel 3" (Giffords detail at Hermann TIRR)

Unidentified Frequencies

Unidentified federal frequencies monitored in Harris County, Texas:

VHF-High

141.6125     FFF NAC encrypted?
162.1625     293 NAC encrypted
162.2125 R  136.5 PL VAMC in Louisiana? - 9xx units, south gate radio room building 7, 
                       something at north central high school, emergency work order, 
                       loading dock
162.2125 M  192.8 PL truck to truck
162.2375 M     CSQ   analog, CC hit around the Eastex and 610, informal conversation,
                       mobile-to-mobile chit chat on freeways in downtown Houston
162.7125 M?  293 NAC Marshals? P25?
162.7875 M   839 NAC Marshals? encrypted
162.7875 M   864 NAC Marshals? encrypted
162.9625 M     CSQ   chit chat
163.1000 M   101 NAC voice, encrypted
163.1000 M   293 NAC oversize load escort, did the radar make it through
163.2000 M   839 NAC Marshals? encrypted
163.3625 M  146.2 PL VAMC (skip from out of area)? - headquarters, 45 radio check for 
                       the VA
163.4375 M  241.8 PL voice
163.4750 M  179.9 PL spanish
163.6500     052 NAC ICE? P25 encrypted (heard during FBI fugitive search in Fort
                       Bend County area)
163.7000 M  206.5 PL voice
163.7125 M  103.5 PL "tac" car-to-car (USFS or NIFC?)
163.7125 M  114.8 PL car-to-car
163.7375 M?  100 NAC encrypted
163.8125 M   864 NAC Marshals? encrypted
164.4500 M  151.4 PL car-to-car talk
164.6000 M   293 NAC Marshals? encrypted
165.0250 M     CSQ   heard during Hurricane Gustav
165.0750 M?  293 NAC Marshals? encrypted
165.6375 M  100.0 PL voice
165.6875 M  100.0 PL CBP new Net input?
165.6875 M   001 NAC Secret Service? encrypted
165.7625 F           Medium-intensity Approach Lighting System with Runway Alignment
                       Indicator Lights (MALSR)? - data bursts
165.8250 M   060 NAC ICE? (used during NCAA Final Four 2011)
166.4750 M  100.0 PL voice
166.5375 M   658 NAC ATFE? encrypted (Net 8)
166.5875 M  100.0 PL CBP new Net input?
166.5875 M   317 NAC CBP new D-Net input?
166.6000 M   032 DPL voice
166.6250 M  250.3 PL voice
166.7375 M   314 NAC CBP? voice
166.7875 M   754 DPL voice with Canadian accent, truck to truck
166.8625 M   001 NAC encrypted
167.2125             EMWIN Data? (continuous data 24/7)
167.4000 M?  293 NAC voice
167.6750 M   293 NAC Marshals? encrypted
167.7250 M  103.5 PL voice, car-to-car
168.0375 M   301 NAC CBP? encrypted
168.0375 M   308 NAC CBP? clear/encrypted
168.0750 M  110.9 PL voice car-to-car
168.2625 R?  301 NAC CBP D-Net?
168.2750 M  123.0 PL voice car-to-car
168.5000 M     CSQ   voice car-to-car
168.6125 M           very weak/broken voice
168.7000 M     CSQ   National Incident Radio Support Cache (NIRSC) Command 1? 
                       - analog voice and DES, surveillance
169.1375     290 NAC encrypted
169.2500 I?  293 NAC FAA input?
169.3250 I?  293 NAC FAA input?
169.4125 M?  316 NAC CBP?
169.6375             data bursts, P25?
170.2625 R?  293 NAC encrypted
170.7250 M           analog simplex voice during Hurricane Gustav
170.8000 M   293 NAC Marshals? encrypted
171.0250 R           IFLOWS/Harris County Flood Alert System - League City repeater output, 
                       unconfirmed
171.2000 M   293 NAC DOE NEST? encrypted
171.3125             trunked control channel? very weak in Houston during good conditions
171.6125 M   864 NAC Marshals?
172.7000 I?  293 NAC encrypted, correlated with 170.2625 activity
172.9000 R     CSQ   somewhere near IAH airport
172.9500 R?  293 NAC FAA?
173.0500 S?          telemetry at Hobby Airport? - chirping sound data
173.0500 M?  293 NAC encrypted
173.1625 R?          data bursts
173.5250 M?  1C3 NAC encrypted, maybe US Capitol Police travel channel
173.7125 M?  293 NAC clear voice, aircraft? (coast guard or military?)
173.8750 M?  1D3 NAC encrypted, maybe US Capitol Police travel channel
173.8875 M?          ATFE Tactical 6? - P25 encrypted

Presumed Obsolete

163.1000 M           DES
164.5500 M           OCDETF? DES
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
168.3500 M           DES, analog voice
168.8625 M           OCDETF? DES
168.9250 R  167.9 PL reported in MT Fed Files
170.0250 R? 167.9 PL FBI? weak, open mic/keyed-up dead air/static
170.8750 S    CSQ    FDC Houston - Prisoner Transportation between Court and Federal
                       Detention Center (mobiles transmit 127.3 PL)
171.1750 R  167.9 PL FBI? near IAH airport, open mic/keyed-up dead air
                      (this may be obsolete, now P25)
171.2000 M           DOE? NEST? - brief analog voice (NCAA Final Four 2011), also P25 or intermod?
173.0250 R? 167.9 PL FBI? lots of key-ups with weak signal (same time as 167.5125), DES
173.1000 R? 167.9 PL FBI? open mic dead air, DES

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 initially remained in use after the FBI's conversion to P25 in the Houston area but have since gone silent.

UHF

406.1750     293 NAC encrypted
407.1250     293 NAC key-up (not encrypted)
410.0125 R?  293 NAC weak/broken voice in Houston
410.2000 M   293 NAC weak/broken voice in Houston
411.7875 M?  293 NAC Coast Guard? keyed-up for 3 seconds with a high pitch tone (NCAA Final Four 2011)
412.4375    206.5 PL constant dead carrier around UH Clear Lake/JSC area
414.5625 M   168 NAC USPS OIG? encrypted
414.5625 M   169 NAC USPS OIG? encrypted
414.7500 M   169 NAC USPS OIG? encrypted

Presumed Obsolete

406.3750 R   114 DPL USPS Houston (Downtown) Processing and Distribution Center - Maintenance
409.2750 R  156.7 PL USPS North Houston Processing and Distribution Center - Operations
410.2000 M   114 DPL USPS Houston (Downtown) Processing and Distribution Center - Maintenance Input
410.3250 R  156.7 PL USPS North Houston Processing and Distribution Center - Maintenance (has phone patch)
412.7000 R   125 DPL USPS Houston (Downtown) Processing and Distribution Center - Operations 
413.1000 M   293 NAC DOS Diplomatic Security Service - Agent 3/Passport Agency Office (encryption used)
413.1250 M   293 NAC DOS Diplomatic Security Service - Agent 4 (encryption used)
413.8375 M   0F0 NAC DOS Diplomatic Security Service - Agent 2 (encryption used)
417.7000 M   125 DPL USPS Houston (Downtown) Processing and Distribution Center - Operations Input

Federal Aviation

Bases

  • Air National Guard (RC-26B) - Ellington International Airport (Houston)
  • Army National Guard (Apache helicopters, Lakota helicopters) - Ellington International Airport (Houston)
  • Army Reserve (Apache helicopters) - Lone Star Executive Airport (Conroe)
  • CBP - Lone Star Executive Airport (Conroe) - 1003 General Thomas Kelly Blvd.
  • Coast Guard - Ellington International Airport (Houston)
  • DEA - Lone Star Executive Airport (Conroe) - 10318 Dorbandt Drive source source source
  • FBI - West Houston Airport (Houston) - identified via monitoring
  • ICE - Contract repatriation flights operate to/from Bush Intercontinental Airport but there is no formal base there
  • Marshals Service - JPATS flights operate to/from Ellington Airport but there is no formal base there
  • NASA - Ellington International Airport (Houston)

CBP Aircraft

The following CBP aircraft have been noted operating the Houston region.




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