Federal Harris County (TX)

Unidentified Frequencies

Unidentified federal frequencies monitored in Harris County, Texas:

VHF-High

163.05   BM? 293 NAC Coast Guard? Ch. CG112? encrypted
163.1    M           DES
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
165.825  M   060 NAC ICE? (used during NCAA Final Four 2011)
166.4625 M     CSQ   Federal Common (analog unencrypted and DES encryption)
166.5125 M   001 NAC Secret Service/WHCA?
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
168.8625 M           OCDETF? DES
168.975  M?          DES?
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
171.175  R  167.9 PL FBI? weak, open mic/keyed-up dead air
171.2    M           DOE? NEST? - brief analog voice (NCAA Final Four 2011), also P25 or intermod?
173.025  R? 167.9 PL FBI? lots of key-ups with weak signal (same time as 167.5125), DES
173.1    R? 167.9 PL FBI? open mic dead air, DES
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)
414.5625 M   168 NAC encrypted

Federal Aviation Bases

• CBP - Lone Star Executive Airport (Conroe)
• Coast Guard - Ellington Airport (Houston)
• DEA - Lone Star Executive Airport (Conroe)
• FBI - ?
• NASA - Ellington Airport (Houston)

Related Links

• Harris County Federal Frequencies - confirmed frequencies