03/19/19 01:37:07 UTC
133.9 MHz
CAPE MAY, NJ
COAST GUARD 2002
 
03/18/19 21:26:26 UTC
350.025 MHz
ORLANDO, FL
OMAHA ?? calling CBP
 
03/18/19 16:23:49 UTC
321.000 MHz
MOLINE, IL
Air to air on Command Post Secondary. “We have 58 on board...one radar operator...Are you going to follow me?”
 
03/17/19 21:49:38 UTC
150.5625 MHz
MOLINE, IL
“Mission 11 to Base on CAP 2” using CAP 2 analog freq
 
03/15/19 22:09:27 UTC
123.450 MHz
CORNELIUS, NC
Same guy seems to screaming into the microphone, about the wind coming in 50 knts against the direction he is flying.
 

03/13/19 21:02:22 UTC
36.700 MHz
A2A helo chit chat, operational stuff etc discussing areas in central NC - afternoon 03/13/2019 -AJ
 
03/13/19 21:00:11 UTC
44.800 MHz
"Flight Check 27, four four point eight fox mike radio check" afternoon 03/13/2019 -AJ
 
03/09/19 18:41:02 UTC
41.675 MHz
Mentioned as the "pick-up freq 41675" of a party of some sort to be contacted when airborne. 14-08156 & 14-08447, 2x H47s (dolphin emblem on tails so presumably "FLIIPER"s) talking while preparing to depart KVUJ on 39.275. 03-07-2019 evening-AJ
 
03/09/19 18:38:12 UTC
39.275 MHz
14-08156 & 14-08447, 2x Army H47s (dolphin emblem on tails so presumably "FLIIPER"s) talking while preparing to depart KVUJ. A party of some sort to be contacted on "pick-up freq" 41.675 FM. 03-07-2019 evening-AJ
 
03/05/19 14:12:14 UTC
34.950 MHz
"...approaching the dam from the north, Uwharrie traffic please advise..." afternoon 03/04/2019 -AJ
 
02/22/19 15:21:27 UTC
228.525 MHz
refered to as "ABN" / "Air Battle Net" freq. Pairs of H64's (callsigns of CRUSADERxx & IDing as ARMY35345, ARMY322 & ARMY397.to KVUJ twr on 126.275) rotating between Badin/A531 & FARP (somewhere east of Yadkin river) Conducting CAS ops with ground units (callsign SCUMBAGxx) in vic of dams on west side of river utilizing NVD and FLIR. Used 62.45FM as "ADMIN". 228.525 also briefly used to deconflict with GECKO65 doing simulated drops in immediate vic (unrelated) Eve 01/31/2019 -AJ
 
02/22/19 15:06:15 UTC
62.450 MHz
ADMIN H64 (CRUSADERxx) A2A use in Badin vic (A531) while conducting CAS ops with SCUMBAG on 228.525. ARMY35345, ARMY322 & 397 + others. Eve 01/31/2019 -AJ
 



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HAVEQUICK Military Radio System: What it Is and What It's Not

In this article I hope to give you a better understanding on what the Military HAVEQUICK radio system is, how it works, and what it's not.

It is important to remember that HAVEQUICK is NOT a form nor was intended to be a form of encryption. Many HAVEQUICK transmissions are voice analog and in the clear. Yes, encryption can be used. However the HAVEQUICK radio system was not developed with the intent of being an encryption system. I have personally heard some HAVEQUICK encrypted comms on the scanner however most of the HAVEQUICK transmission were in the clear and you could usually make out a word or two during the transmission.

HAVEQUICK is a frequency hopping system used to as an anti-jamming communication system. Basically the HAVEQUICK system uses a series of 16 UHF AM (225-380 MHz) radio frequencies. During a radio transmission a computer in the aircraft rapidly switches the transmission between the 16 pre-set frequencies, both the length and order of frequency selection are "random" and are based on very precise timing. The the transmitter and receiver must be "in-sync" as to the timing of each frequency switch or the received signal will be broken.

The perfered method of frequency switch timing is via a GPS receiver attached to the HAVEQUICK radio. However GPS is not always a perfect method. GPS signals can be blocked during various maneuvers a jet figher is performing during a dog-fight. GPS signal can also be blocked by another aircraft above, blocking line-of-site to the GPS satelittes. Due to these possiblities HAVEQUICK radios have other methods of getting a "timing-tick" signal.

In the absence of GPS equipment, a Time Signal Set (TSS) can pass Time-Of-Day (TOD) over-the-air to any HAVEQUICK radio. These TSS's are normally installed at Air Force bases or on large surface vessels.

Another method of sending TOD information to a HAVEQUICK radio is from an AWACS or JSTARS aircraft. These aircraft have onboard rubidium oscillators that can pass an accurate TOD signal to any HAVEQUICK radio. I have personally heard these TOD signals, below is a YouTube video I made of such a signal.

Video of Actual TOD Timing Signal from an AWACS during Exercises in Florida

When you are searching the Military Air Band (225-380 MHz) and your scanner stops on what seems like a transmission that was the length of a word or two, that was probably a HAVEQUICK transmission. The table below outlines the HAVEQUICK frequenices. These frequencies are what are known as the "Frequency Managed Training Net".

FMT-Net for Continental United States
Channel DesignationFrequency (AM)
Preset Channel 20:235.050 MHz
Preset Channel 19:225.150 MHz
Preset Channel 18:252.925 MHz
Preset Channel 17:239.950 MHz
Preset Channel 16:271.950 MHz
Preset Channel 15:267.850 MHz
Preset Channel 14:262.450 MHz
Preset Channel 13:257.250 MHz
Preset Channel 12:314.450 MHz
Preset Channel 11:308.750 MHz
Preset Channel 10:303.275 MHz
Preset Channel 9:298.650 MHz
Preset Channel 8:293.550 MHz
Preset Channel 7:289.050 MHz
Preset Channel 6:284.150 MHz
Preset Channel 5:279.750 MHz
TOD AWACS/JSTARS signal 287.450 MHz



I have personally heard HAVEQUICK comms on all of the above frequencies except for 298.650. That could simply be that over the years my searching scanner just never was at the right place at the right time.

The above frequencies maintain a 4 MHz minimum separation and have been standardized for continental United States FMT-Nets. These frequencies are in the order in which they will be used for training by the Tactical Air Command.

You may ask why Preset Channels 0 - 4 do not exist in the above table. I do not know the answer to that question, but I do have some thoughts. There are 2 different types of nets, FMT-Nets as outlined here and are used for training in the CONUS. Then there are T-Nets. I believe the empty channels deal with allowing open memory in the HAVEQUICK radios to allow for the coded "Word-of-the-Day" which are used in T-Nets. Just a thought.

I had always know a little about what HAVEQUICK was and how it functioned. However until doing some research I didn't know the HAVEQUICK frequency order until I found an online non-classified document. Now with this information I am going to try and scan HAVEQUICK and hear the entire transmission. My first thought is to enter the above frequencies into a bank, in the order as listed above without any delay. Next time there are HAVEQUICK transmissions in Florida I hope to learn more.

I hope you've enjoyed this article.