
THE FED FILES - Welcome to The Fed Files blog! This blog was originally built to support the "Fed Files" column in Monitoring Times magazine. Although the Fed Files, as well as Monitoring Times, ended with the December 2013 issue, this blog continues and is associated with the new federal monitoring column, Federal Wavelengths, in The Spectrum Monitor magazine. If you would like to make a comment, pass along a tip or frequency you can send it to my email address, chrisparris @ thefedfiles.com
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- CBP Frequencies
- DEA Frequencies
- Department of Agriculture Frequencies
- Department of Energy Frequencies
- Department of the Interior Frequencies
- FAA Frequencies
- FBI Frequencies
- Federal P-25 Radio Identifications
- FEMA Frequencies
- FPS Frequencies
- ICE Frequencies
- NASA Frequencies
- National Park Service
- Nationwide Military Frequencies
- Postal Service / Postal Inspection Service Frequencies
- State Department Frequencies
- Treasury Department Frequencies
- TSA Frequencies
- U.S. Capitol Police Frequencies
- US Coast Guard VHF/UHF Frequencies
- US Marshals Service
- US Secret Service/WHCA Frequencies
Friday, May 11, 2007
Lawrence Livermore National Laboratory

Hoover Dam
Monday, April 30, 2007
Update At ORD
First off, the 163.4750 MHz frequency does NOT appear to be the TSA on further listening. It is, in fact, the Immigrations and Customs Enforcement operations at the International Terminal at O'Hare Airport. However, it gets strange in that all the traffic on this repeater is also heard on another repeater on 163.7500 MHz, located somewhere nearby. These frequencies are quite busy with announcements as to incoming flights and baggage movement (thus my thinking it was TSA at first). I also heard one unit calling CHARLIE 100 about taking a subject under arrest to a holding cell. CHARLIE 100 is the Customs & Border Patrol National Law Enforcement Communications Center in the Orlando, FL area.
Next, I discovered the 165.8500 MHz frequency is actually the input to the ICE/CBP repeater on 163.6250 MHz, which does appear to be at ORD. I heard more than a few units switch between the 163.6250 and 163.4750 frequencies.
The 169.1625 MHz repeater does appear to be TSA, but have not confirmed the input. 172.1500 MHz is definitely in use by the TSA at ORD.
And finally, while searching, I got a couple of brief hits on 167.0375 MHz. I don't know who that might have been. All the frequencies listed in this blog entry were using APCO P-25 digital mode and un-encrypted.
Friday, April 27, 2007
New Dallas Frequencies

New TSA Freqs Found???

163.4750, P-25 - Repeater that seems to carry a lot of informal traffic regarding baggage screening and personel assignments. I did not find the input to this repeater.
Friday, April 20, 2007
NASA JSC Shooting

407.0375 MHz
407.2375 MHz
407.4375 MHz
407.6375 MHz
408.5500 MHz
409.5125 MHz
409.7125 MHz
409.9125 MHz
Thursday, April 19, 2007
VAMC Pittsburgh Radio Updates
Monday, April 09, 2007
New Low Profile Federal Radios

A few years ago I saw this request for information from the Department of Homeland Security regarding a "low profile", cell-phone look-alike radio:
http://www.cbd-net.com/index.php/search/show/575529
A recent posting on the "Batlabs" board indicates that Motorola has come out with just what DHS wanted, and they are calling it the XTS4000:
http://batboard.batlabs.com/viewtopic.php?p=313386&sid=1896dc86ad52bb7b6e99d3773ecc31f2
While there is some speculation that these were developed with the IWN trunked system in mind (since they will do P-25 VHF trunking), I would guess that any federal agency using VHF systems would be interested in a radio like this. This model covers VHF frequencies, but could a UHF version be in the works?
Some additional information on the radio can be found at these links to the FCC web site:
Photos:
https://gullfoss2.fcc.gov/prod/oet/forms/blobs/retrieve.cgi?attachment_id=738677&native_or_pdf=pdf
https://gullfoss2.fcc.gov/prod/oet/forms/blobs/retrieve.cgi?attachment_id=738678&native_or_pdf=pdf
Operator manual:
https://gullfoss2.fcc.gov/prod/oet/forms/blobs/retrieve.cgi?attachment_id=738680&native_or_pdf=pdf
https://gullfoss2.fcc.gov/prod/oet/forms/blobs/retrieve.cgi?attachment_id=738682&native_or_pdf=pdf
Sunday, April 01, 2007
IWN Redux - It's Growing Again! UPDATED!
167.8125 - Primary Control Channel
167.9375 - Voice
168.1875 - Alternate Control Channel
170.9375 - Voice
This comes despite information in the recently released OIG report about the IWN Project. In that report it was stated that the next phase of the IWN deployment would be in the Southwest US:
http://www.usdoj.gov/oig/reports/OBD/a0725/final.pdf
The IWN has recently grown from the initial "testbed" system in Western Washington State down in to Northern Oregon and is expected to continue to grow as the project continues. Listeners in the Northeren Michigan area should keep an ear out for additional control channels and voice channels that go with them!
Friday, March 30, 2007
Los Angeles BoP MDC

Thursday, March 29, 2007
Fed Files Contest Winner!

Wednesday, March 28, 2007
CBP Border Patrol Update

After my recent trip to Arizona, I decided to dust off my listings for the DHS Customs & Border Protection Border Patrol. The Border Patrol continues to use its legacy VHF frequencies that are in blocks assigned to the Justice Department.
Currently the CBP Border Patrol doesn’t have a national channel plan like some agencies, but assigns their frequencies as needed locally. Along both the northern and southern border areas (except for southern California), the 163 MHz frequencies are the “backbone” repeaters with multiple input frequencies, from the 162 MHz, 165 MHz and 168 MHz blocks of frequencies. These frequencies can be used as repeaters or “local” simplex frequencies as well.
In areas not near the US borders, the former US Immigration agents, now part of DHS as the Immigration and Customs Enforcement may use frequencies from these blocks for local use.
162.8250
162.8500
162.8750
162.9000
162.9250
162.9500
162.9750
163.0500
163.1000
163.3750
163.5500
163.6000
163.6250
163.6500
163.6625
163.6750
163.7000
163.7250
163.7500
163.7750
163.8250
163.8875
163.9625
164.0500
164.5500
165.8000
165.8250
165.8500
165.8625
165.8750
165.9000
165.9250
165.9750
166.5875
166.8500
168.3500
168.8000
168.8250
168.8500
168.8625
168.8750
168.9000
168.9250
168.9500
168.9750
170.3500
170.6250
170.6750
170.7000
170.7250
170.7375
170.7500
170.7750
170.8250
171.3125
171.7250
172.5250
173.6875
173.7750
Besides the frequencies listed above, most CBP Border Patrol units have access to the national CBP Customs radio nets listed in a previous blog entry:
http://mt-fedfiles.blogspot.com/2006/06/dhs-cbp-channel-lineup.html
Sunday, March 25, 2007
Phoenix Federal Scanning

Justice IWN Update - The Next Move?
http://www.usdoj.gov/oig/reports/OBD/a0725/final.pdf
The above link contains some interesting information about the project and its use by various agencies so far.
The IWN expanded it's coverage from Washington State down in to Oregon and the Portland metro area in late 2006. It now appears to be in full use by Portland area federal agencies. We've been monitoring a LOT of activity on the system in the last month or so, almost 24/7. Several talk-groups on the system are showing the majority of the activity, but since the radios have been set up with the encryption selected automaticaly, I haven't heard any clear transmissions since the radio techs finished with their installation tests. But remember - systems are not encrypted, talk groups are not encrypted, but it is the individual radios that are encrypted.
So where will the IWN show up next? Information in the above referenced audit report confirms that the southwest US is the next region to start the build out. I am currently in the Phoenix area (more on that in another blog entry) and have noted there is a P-25 control channel on 165.6375 MHz. It is part of the Phoenix area P-25 trunked system that allows federal VHF users to tie directly in to the 800 MHz system without patches.
Here is some budget information for the IWN project:
http://www.dhs.gov/xlibrary/assets/mgmt/e300-dhs-iwn2008.pdf
So keep a lookout for P-25 control channels showing up in the VHF federal band in your area!
Tuesday, March 13, 2007
NOAA UHF Weather Links
Some listeners may not know that the NOAA has some UHF frequencies that are used for "links" between the NOAA Weather Offices and the VHF weather transmitters that are located across the country. Sometimes, depending on the location of the NOAA offices, you can hear the weather broadcasts better on the UHF link frequency. And if the VHF Weather transmitter is off the air for some reason, you still might be able to catch the feed on the UHF frequency!Here are some UHF frequencies that are allocated for use by the NOAA:
410.1000 - Weather Link
410.1750
410.4750
410.5500
410.5750 - Weather Link
410.6750
410.7250
410.8500
410.8750
412.3250
415.8500
415.9000 - Weather Link
416.3750 - Weather Link
416.9750 - Weather Link
I have noted where I have heard the NOAA weather being linked to VHF transmitter sites.
So if you have trouble hearing the normal VHF NOAA Weather frequencies, give the UHF federal band a search!
National Marine Fisheries Service
Thursday, March 08, 2007
FBI Aircraft Call Signs

Thursday, March 01, 2007
IAD BETWEEN FLIGHTS

I had a little time between flights at Dulles International Airport near Washington, DC this week. Here's a little of what I was able to scan from Terminal D:
162.3500 MHz - FAA, Wind Shear data?
165.8250 MHz, P-25 - "409 to Command Center..."
168.9250 MHz, P-25 - DHS Customs & Border Protection at IAD
171.2375 MHz - Paging data
172.9000 MHz, P-25 - TSA at IAD - The TSA seems to be encrypted most of the time here. Very unusual for TSA, but I've heard reports they are encrypted full time in San Diego also.
407.8625 MHz, P-25 - Close Call hit on this frequency, sounded like "SIDE DOOR" calling Patrol Units.
408.6000 MHz, P-25 - Another Close Call hit. Active, but unknown who it is.
409.7125 MHz, P-25 - Yet another Close Call hit. Also active and unknown.
Maybe some of the folks who regularly monitor the DC area can fill me in on who all the UHF P-25 frequencies belong to!
Saturday, February 24, 2007
Coast Guard Covers DC

A recent post on the SCAN DC list pointed to this press release about the recent move from Customs and Border Protection to Coast Guard helicopter assets patroling the National Capitol District:
http://www.piersystem.com/go/doc/651/145886/
The Coast Guard is using HH65-C Dolphin helicopters to patrol the DC area and intercept wayward aircraft.
Monday, February 19, 2007
167.8625 MHz Anyone?

For over a year now I have been catching a lot of voice and digital paging data on 167.8625 MHz in different areas of the country. Despite this frequency falling in to the "normal" range used by the FBI, I am 99.9% sure that this is being used by the Department of Veterans Affairs for medical paging at VA Medical Centers across the country . I'm hoping some Fed Files readers can help confirm if this frequency is used in your area. So give this frequency listen and let us know if you catch some paging data or someone calling for a doctor to X-ray!
