The rollout of the new UHF radio systems for the Transportation Security Administration (TSA) appears to be proceeding at a fast pace.
So far we have found the frequencies of 406.7375/415.7375 MHz, P-25 using various NAC's. The P25 radio IDs are in the 8xxxx or 9xxxx range so far, but some radios are just showing a RID of 1.They appear to be using a repeater at the airport, but I have identified a simplex channel of 411.4875 MHz, using the same NAC at one of the airports listed below. More are likely to be found as I get more time at the airports to monitor. I suspect that the simplex channels will be available with multiple NACs in different zones of the radios, similar to what they used in the VHF channel plans.
Lots of questions regarding encryption - Yes the TSA has always had AES encryption available in their radios and the new APX radios are no exception. And like the other radios, the encryption is not forced on, so you will get some clear transmissions.
(NOTE: Corrected the frequency pair listing above which started out as incorrect!)
Here is a list of what we have found active so far. I will update the list as new finds come in.
Airport P-25 NAC
AUS - Austin Bergstrom N061
BOS - Boston Logan N01C
BUR - Hollywood Burbank N06A
COS - Colorado Springs N076
DAL - Dallas Love Field N07C
DEN - Denver International N016
DFW - Dallas/Ft. Worth Int'l N02A
EWR - Newark N03D
GJT - Grand Junction, CO N243
HOU - Houston Hobby N028
HPN - Westchester Co NY N1CB
JFK - New York JFK N02B
LAX - Los Angeles Intl N031,N032
LGA - New York LaGuardia N03A
MCO - Orlando Intl N040
MDW - Chicago Midway N070
ORD - Chicago O'Hare N010
PHX - Phoenix Sky Harbor N046
SAN - San Diego Intl N0E0
SAT - San Antonio Int N0DB
SFO - San Francisco Intl N049
TUS - Tucson Intl N0F0
NOTES:
In addition to the repeater paired frequencies, here are simplex channels that have been confirmed:
409.4875
411.2875
411.4875
411.5375
414.6125
414.6375
414.9125
415.7375
418.4875
419.6875
These channels may be used with multiple NACs at the various airport locations.
UPDATES!
On my latest trip through San Diego, the TSA at SAN airport were using 414.6375 MHz, with a NAC of N0E0. Encryption was not forced, so some clear traffic was heard.
I just noticed a posting from CARMA Chicago that they heard a tone on 406.7375 MHz, N293. Unknown if this is testing for a TSA repeater, but odds are that it is. Also unknown if this is O'Hare or Midway airport.