Every type from fighters to helicopters from air forces around the globe, Classic Airliners Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? Hold Advisor is included with ForeFlight Pro Plus subscription plans and above. When are pilots required to have approval to conduct practice approaches? If you continue to use this site we will assume that you are happy with it. Just saw this post and took a look at the tool. But as I travel further west, over Berryville, AR ( 4M1 ), I see this: Airport Communications CTAF: 122.9 RAZORBACK APPROACH: 126.6 RAZORBACK DEPARTURE: 126.6 The United States has 22 Air Route Traffic Control Centers (ARTCC). When your route includes one or more airways, labels appear along each airway segment. provide updates on aviation meteorological and aeronautical From the vicinity of Elmira to Phillipsburg. Minimising the environmental effects of my dyson brain, Is there a solution to add special characters from software and how to do it. Audio streams may not be used in any third-party products. If you live close but don't have equipment you may qualify for loaner equipment ForeFlight offers new alerts to keep you aware on the ground and in the sky. New York Center was the world's first Air Route Traffic Control Center (ARTCC), and manages the entire New York Metropolitan Area and Philadelphia areas, as well as 3,250,000 square miles (8,400,000 km 2) of oceanic airspace. For example, if you are heading north-ish use 124.35, and if you are going south-ish use 118.1. Acidity of alcohols and basicity of amines. If you use the maps, heading NE-bound from the SF Bay Area, it says contact Norcal. If for no other reason, it can be entertaining to listen to. Last Updated: November 18, 2021, 8:15 pm Miami (ZMA) Air Route Traffic Control Center (ARTCC) Controls all air traffic in the lower half of Florida and the coastal Atlantic and Caribbean Islands. Anchorage ARTCC has control responsibility for more then two-million square miles ofairspace. Direction in which the traffic is proceeding. What are the differences between various simulator levels? MathJax reference. Dont worry. This sector primarily works ORD arrivals from the southeast on the VEECK and WATSN STARs. Every support team member is a pilot and ForeFlight expert. Radio Range Map (Shows Control Area Radio Ranges) Real World Seattle ARTCC High Sector Map. Does not control traffic in the air but is involved in dispatching instructions (clearances) prior to takeoff. NAS Status Before taking off from a towered airport, I will ask the ground controller for FF and get a squawk code and post-departure contact frequency. Can I use actual IMC time for the requirements in 61.109(a)(3)? Location Airport Operations Airport Communications APCH/DEP CTL SVC PRVDD BY LOS ANGELES ARTCC (ZLA) ON FREQS 119.05/269.5 (SAN LUIS OBISPO RCAG) WHEN SANTA BARBARA APCH CTL (SBA) CLSD. Good point, but how do you find the frequency for the FSS? The Basemap is what you see with no other charts or maps other than the Aeronautical Map enabled, and depicts terrain, roads, urban lighting, and more. Aug. 30, 2022 Tap-hold anywhere on the map to open the Add to Route popup, which lists any airspaces at the location you tapped. Connect and share knowledge within a single location that is structured and easy to search. As you taxi to the runway, you discover that the vertical speed indicator displays a descent of 100 feet per minute. The remaining RCOs are of two types: 1,223 RCOs that allow pilots to If you do live near an airport, you can find out all the traffic control, weather, and Traffic Advisory frequencies by entering the airport at AirNav . Use MathJax to format equations. We use cookies to ensure that we give you the best experience on our website. Discussion in 'Flight Following' started by rkiefer2, Dec 19, 2015. Two new in-flight alerts also improve situational awareness in the air - the Sink Rate alerts lets you know when your downward vertical speed becomes excessive, and the 500' AGL alert provides a simple callout when you descend past 500' AGL. Frequencies Grouped All New/Updated Show Repeater Inputs Alabama RCAG Sites ZDC is one of 21 FAA ARTCCs in the United States and is the third busiest en route center in the nation. Connect and share knowledge within a single location that is structured and easy to search. Those that have at least one associated frequency will include the frequency and its name at the bottom of that airspaces summary, which you can tap to highlight the airspace on the map. Tap the Details button to view these additional frequencies, as well as other information about that airspace. Continue searching. Coverage Map - Reliable internet How many flights does ZDC monitor each day? Bad Weather Areas How do I request a frequency change to listen to ATIS? Try mixing and matching the new map settings to find the combination that works best for you. On March 24, 2005 ZDC observed a record 10,682 daily operations. If there are more than four frequencies, tap All Frequencies at the bottom of the Communications sections to see the full list. A few corrections: Could you fix the link? If anyone else notices any other ARTCC frequency changes it would be great if they could post them here on the forum. Customize the Aeronautical Map. As a reminder, we are supposed to monitor 121.5 when able. initiation, and assistance to aircraft in emergencies. I've generally found nearest ARTCC to be a useless feature. information. Although they may be several hundred miles away from the, Since IFR operations are expedited through the use of direct communications, pilots are requested to use these frequencies strictly for communications pertinent to the control of IFR aircraft, Flight plan filing, en route weather, weather forecasts, and similar data should be requested through FSSs, company radio, or appropriate military facilities capable of performing these services, Each sector is handled by one or a team of controllers and has its own sector discrete frequency, As a flight progresses from one sector to another, the pilot is requested to change to the appropriate sector discrete frequency, Controller Pilot Data Link Communications (, As a result, it expands two-way air traffic control air/ground communications capabilities, Consequently, the air traffic system's operational capacity is increased and any associated air traffic delays become minimized, A related safety benefit is that pilot/controller read-back and hear-back errors will be significantly reduced. To learn more, see our tips on writing great answers. Maps. TFR Alerts enhance your inflight situational awareness by warning you of nearby TFRs, whether or not the TFR layer is selected. APCH/DEP SERVICE PRVDD BY MEMPHIS ARTCC ON FREQS 126.1/269.0 (FAYETTEVILLE RCAG) WHEN RAZORBACK APCH CTL CLSD. LiveATC FAQ Does control traffic, generally in larger areas and above FL180 (Class A airspace), Will broadcast some weather info and provide advisories, Extends the range of FSS broadcasting ability. scion capital letters 2020. pros and cons of going commando; how to become a teacher without a degree Thanks for contributing an answer to Aviation Stack Exchange! (Mobile browser) Whatever 'near' means, of course :-). 123.050 MHz with 122.950 being the usual CTAF frequency of choice for airports with a tower. How many FAA ARTCC are there? How do you figure out which frequency to contact approach on for a class bravo transition? Using indicator constraint with two variables. FBO locations are also mapped on Taxi Charts for better surface navigation. When such an outage does occur, the pilot should, if workload and equipment capability permit, maintain a listening watch on the affected frequency while attempting to comply with the following recommended communications procedures: If two-way communications cannot be established with the, However, when the next normal frequency change along the route is known to involve another ATC facility, the pilot should contact that facility, if feasible, for instructions, If communications cannot be reestablished by either method, the pilot is expected to request communications instructions from the FSS appropriate to the route of flight, The exchange of information between an aircraft and an, Accordingly, when circumstances dictate a choice between the two, during an, The use of CPDLC and ADS-C in the Oakland Oceanic FIR (KZAK) is only permitted by Inmarsat, Iridium, and MTSAT customers. In air traffic control, an area control center (ACC), also known as a center or en-route center, is a facility responsible for controlling aircraft flying in the airspace of a given flight information region (FIR) at high altitudes between airport approaches and departures. Thanks for contributing an answer to Aviation Stack Exchange! MathJax reference. I understand this and do so when able. | Privacy Policy | Terms of Service | Sitemap | Patreon | Contact, (level / climbing to / leaving / descending to), [Facility name or location name and terminal function], [The Name of the Next Succeeding Reporting Point], Attention all aircraft, SIGMET Delta Three, from Myton to Tuba City to Milford, severe turbulence and severe clear icing below one zero thousand feet. What's the difference between a power rail and a signal line? In ForeFlight Mobile version 6.7 or later the ScratchPads view has some handy pre-made templates and the ability to keep and share multiple scratch pads. ForeFlight 8.2 brings the first big update to the global data-driven Aeronautical Maps since their introduction with airspace altitudes, ARTCC frequency stamps, Mode C rings, Class E surface areas, TRSAs, SATRs, and US ADIZ. ARTCC Radio Frequencies Fields listed are Sector #, Sector Name, VHF freq, UHF freq, and description. The information presented is believed to be correct from sources in the Wiki and FAA records. They're showing up SE of Hawaii. Airport/ARTCC Code Frequency Search (e.g., 124.400, 128.75) Site-wide search Browse Feeds Top 50 Feeds HF Oceanic Feeds Coverage Map Bad Weather Areas LiveATC FAQ Offer LiveATC feed Contact LiveATC.net Press Inquiries LiveATC on iPhone Do they control air traffic by communicating with pilots? If ForeFlight detects that you will enter or pass near a TFR within the next five minutes, it will give you a visual and auditory alert. Interactive Map of ARTCC / RCAG Transmitter Sites w/frequencies, http://www.milaircomms.com/artcc_transmitter_locations.html, Re: Interactive Map of ARTCC / RCAG Transmitter Sites w/frequencies, Quote from: sykocus on April 21, 2014, 05:25:58 AM, Quote from: av8tor172 on April 21, 2014, 07:41:43 AM, Quote from: InterpreDemon on April 24, 2014, 02:03:42 PM, http://air2airshare.com/milaircomms/artcc_transmitter_locations.html, http://www.milradiocomms.com/artcc_transmitter_locations.html?center=ALL. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. George and anyone else interested in ZJX frequencies. Especially since with an EFB, the information is no more than 2-3 taps away. Why did the tower at a Class D airport not set me up with flight following on the ground? Users must ensure that the proper data link code is filed in Item 10a of the ICAO FPL in order to indicate which satellite medium(s) the aircraft is equipped with. 3. 119.95 is the freq (one freq, anyway) for traffic over, In USA the high altitude frequencies (above. Bad Behavior has blocked 518 access attempts in the last 7 days. Making statements based on opinion; back them up with references or personal experience. Just by eyeballing it I'd guess the longitudes of th sites were entered as west rather then east. US ARTCC (Center) Feeds on LiveATC.net. Use the one appropriate to your departure heading. Last time I checked it was Sector 35 BEARZ Low 11,000-FL250, it replaced 127.800 over a year ago. How do you get the MEAs then? If an airspace has more than one associated frequency it will indicate the number that are available. When an IC mismatch or Confirm Assigned Altitude (CAA) downlink time-out indicator is displayed in the Full Data Block (FDB) and Aircraft List (ACL), the controller who has track control of the aircraft must use voice communication to verify the assigned altitude of the aircraft, and acknowledge the IC mismatch/time-out indicator, Transfer of communications automatically establishes data link contact with a succeeding sector, Menu text transmissions are scripted nontrajectory altering uplink messages, The CPDLC Message Elements for the Initial Capabilities rollout are contained in TBL 5-3-1 through TBL 5-3-19, CPDLC Message Elements, in the Aeronautical Information Manual, NOTE-The FAA is not implementing ATN B1; the ATN B1 column in the tables is there for informational purposes only, As flights proceed along a route, pilots will move from one sector or ARTCC to another. You are using an out of date browser. I have been getting aircraft talking to Chicago Center Air Route Traffic Control Center (ARTCC) on a frequency of 134.875 MHz and can't find any information on it anywhere. Hazard alerts are available with a Pro Plus subscription plan and above. Try mixing and matching the new map settings to find the combination that works best for you. It goes to the website, but not the specific link. All Content Copyright 2023, LiveATC.net LLC, All Rights Reserved. We thank you for your support and hope you'll join the largest aviation community on the web. OK, thanks for the info. ForeFlights Synthetic Vision feature now provides even more situational awareness with integrated ADS-B traffic depictions and a 360-degree interactive Glance Mode. emergency, when any part of the area described is within 150 miles of This video walks you through the ScratchPads feature. You will find your answer on the. What action should you take? The frequencies on the chart are fine if you're out in the boonies or flying high enough that you're above any Tracons. Also, do they offer WX information in air born? It may not display this or other websites correctly. We've added a "Necessary cookies only" option to the cookie consent popup. Provides inflight weather, preflight planning and clearances and takes NOTAMS. In the KIND example, the tabs have a different frequency for E and W of the active runway, which I find more helpful than looking at the white box on the map. What are differences between vortex, swirl, eddies and wake? Passenger cabin shots showing seat arrangements as well as cargo aircraft interior, Cargo Aircraft APCH/DEP SVC PRVDD BY MEMPHIS ARTCC ON FREQS 126.85/281.55 (HARRISON RCAG). Can archive.org's Wayback Machine ignore some query terms? What is the area of area of coverage at ZDC? Accident, incident and crash related photos, Air to Air Login with username, password and session length. The trick is not to make your request on the first call up, but do announce your position, since Flight Service has many transmitters, and they will pick the one that is closest to you: N347T: Flightwatch, Mooney 3-4-7-Tango, Crazy Woman Positive communication is key to staying safe. If your using flight following .they will give you the preferred freq for your route. @StallSpin That's correct, I really meant to make the point that if you're not 'near' any field then you still have a way to find it. Within this field, I will list VORs which are contained in the sector. Type of aircraft and altitude, if known, or the relative speed of the traffic. Alerts are also triggered if you enter a TFR, or fly above or below a TFR at a nearby altitude. The CPDLC's principal operating criteria are: Voice remains the primary and controlling air/ground communications means, Participating aircraft will need to have the appropriate CPDLC avionics equipment in order to receive uplink or transmit downlink messages, En Route CPDLC Initial Services offer the following services: Altimeter Setting (AS), Transfer of Communications (TOC), Initial Contact (IC), and limited route assignments, including airborne reroutes (ABRR), limited altitude assignments, and emergency messages, Altimeter settings will be uplinked automatically when appropriate after a Monitor TOC. ATC will omit frequency change restrictions whenever pilot compliance is expected upon receipt. All ForeFlight customers can now access international departures, arrivals, and approaches using Procedure Advisor, expanding the scope of ForeFlights global planning capabilities. I've created an interactive map displaying 696 ARTCC / RCAG (Remote Center Air/Ground) transmitter locations. . Otherwise, look for a nearby (i.e within 40nm) class B or class C (or even some class D with radar approach control) airport and give the approach facility listed on the chart a call. All other forms of data link connectivity are not authorized. Anchorage ARTCC (ZAN) is the northern, eastern and western-most center. Airport/ARTCC Code Frequency Search (e.g., 124.400, 128.75) Site-wide search Browse Feeds Top 50 Feeds HF Oceanic Feeds Coverage Map Bad Weather Areas Real World Seattle ARTCC Low Sector Map. Is there a single-word adjective for "having exceptionally strong moral principles"? They are operated by and are part of the Federal Aviation Administration of the U.S. Department of Transportation. What is the correct way to screw wall and ceiling drywalls? Still looking for something? Just search the airport/ARTCC code or frequency or click on their world map and youll be tuned in and listening. See detailed 3D terrain, obstacles, and runways in full screen Portrait or Landscape mode, and pair with an AHRS-capable ADS-B receiver like Sentry or compatible Garmin equipment for dynamic backup attitude and traffic display. If I come across any changes in my area (ZNY, ZDC and ZBW) would you like me to pass it on to you so you can update your site? The most common are 122.7, 122.8, 122.9, 123.0. A controller may also manually send an altimeter setting message, NOTE-When conducting instrument approach procedures, pilots are responsible to obtain and use the appropriate altimeter setting in accordance with 14 CFR Section 97.20. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Learn more about ForeFlight's advanced hazard awareness features here. Washington Center (KZDC) I'm not convinced of the need for VFR-only private pilots to delve into IFR enroute charts. Flight Service Stations (FSS) are air traffic facilities that What is the working principle of a centrifugal pump. To learn more or purchase visit http://foreflight.com/synthetic-vision/, Mountain Passes & More in High Resolution Basemap, Traffic & Glance Mode in Synthetic Vision. - External VHF antenna Again, the sectionals may not show that (they are mainly going to show the highways and VFR-based pointouts crossed with Victor Airways for that section of space in question), so you'll have to rely on the en route maps to find . rev2023.3.3.43278. I just wanted to point out for everyone's sake that we're supposed to monitor 121.5 when able. Otherwise you'll need to consult the Airport Facility Directory for the region your are flying to find a ARTCC (Center) frequency. Downloads are significantly faster and use less disk space. Great work and thanks again. Light or negative icing reported from four thousand to one two thousand feet remainder of Kansas City Center area, Federal Aviation Administration - Pilot/Controller Glossary, Aeronautical Information Manual (4-1-1) Air Route Traffic Control Centers, Aeronautical Information Manual (5-3-1) ARTCC Communications, Aeronautical Information Manual (5-3-2) Position Reporting, Aeronautical Information Manual (7-1-8) Inflight Weather Advisory Broadcasts, CFI Notebook.net - In-Flight Weather Advisories, CFI Notebook.net - Notice to Air Missions (NOTAMs), Federal Aviation Administration - Air Route Traffic Control Centers (ARTCCs), MilAirComms - Map of ARTCC (Air Route Traffic Control Center) Transmitter Locations, This service is provided principally during the en route phase, While services remain constant, changes in sector coverage will require, May operate from Remote Center Air/Ground sites (, Provides current weather information as required, Control begins at 1,200' Above Ground Level (, ARTCCs are capable of direct communications with IFR air traffic on certain frequencies, Maximum communications coverage is possible through the use of, These sites are located throughout the U.S. SIGMET, SIGMET, or CWA alert once on all frequencies, except Airspace around busy airports can be crowded, and I feel safer knowing that I am not an unidentified blip; ATC knows where I am, and what I am doing, and can redirect me if necessary. Nice job, George. Check out our other videos on purchasing Jeppesen charts through ForeFlight and linking an existing Jeppesen account to learn more. #1 I have been getting aircraft talking to Chicago Center Air Route Traffic Control Center (ARTCC) on a frequency of 134.875 MHz and can't find any information on it anywhere. You can adjust settings related to TFR alerts by tapping More, then Settings, then scroll down to Alerts. Altimeter settings will also be uplinked automatically when an aircraft receives an uplinked altitude assignment below FL 180. Synthetic Vision is included in Pro Plus subscriptions and above. 122.1 MHzand monitor flight services response on the frequency of a co-located VOR. but the regional guys are working on my nerves with the child-like remarks they can make. LiveATC Mobile Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Also, the tabs are more comprehensive, since they provide frequencies for radar services at military bases. Aeronautical Maps are available as part of ForeFlight's Basic Plus, Pro Plus, and . Views from inside the cockpit, Aircraft Cabins To provide a feed you need: Seattle ARTCC VOR/Overview Map. COMMUNICATIONS PRVDD BY HAWTHORNE RADIO ON FEQS 122.1R/111.0T (GUADALUPE RCO). In the United States, you can consult the VFR Sectional Chart and look for the frequency box located near a terminal area. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Visit foreflight.com/pricing to see what other features are offered on these plans and to upgrade. That should also match that map that you posted as well. The Operations Room contains 50 to 60 consoles with large computer monitors displaying aircraft data blocks imposed on top of aviation landmarks and sector boundaries. Please login with your Premium Subscriber Account, To learn more about our premium subscription program please see: RadioReference Premium Subscription, Sector 06 Key West High (Warning Area Ops) UHF, Sector 26 Homestead Low/High (SELKEY) UHF, Miami (ZMA) Air Route Traffic Control Center. Any frequencies designated as Secondary include a note indicating this. I can't tell you what specific sectors within the ARTCC the following freqs are for, but here they are for the respective ARTCCs. One frequency used in my father's area of Cleveland Center is 120.77. Those that have at least one associated frequency will include the frequency . Hazard Alerts in ForeFlight enhance your situational awareness and provide greater peace of mind by warning you of potential hazards ahead. - VHF receiver (scanner or SDR) Surveyed Elevation: 433 MSL Operations Green background denotes normal operations. Making statements based on opinion; back them up with references or personal experience. 10 seconds pass ARTCC frequency stamps, Mode C rings, Class E surface areas, TRSAs, SATRs, and US ADIZ. What am I doing wrong here in the PlotLegends specification? Beautiful shots taken while the sun is below the horizon, Accidents Pictures of great freighter aircraft, Government Aircraft frequency; and 398 RCOs over which pilots can transmitusually on Common Frequencies More at the Document Center Charts General SIDs STARS Instrument Procedures Flights Do new devs get fired if they can't solve a certain bug? Common Aviation Frequencies: A Pilot's Communication Guide 118.000 - 121.950 MHz. A few intense level five cells, maximum tops four five zero, Attention all aircraft, Kansas City Center weather advisory one zero three. What is Weather and Chaff information provided to pilots by ATC? Each Air Route Traffic Control Center (ARTCC) is almost a small town in itself. The best answers are voted up and rise to the top, Not the answer you're looking for? Aircraft painted in beautiful and original liveries, Airport Overviews Aeronautical Maps are available as part of ForeFlight's Basic Plus, Pro Plus, and Business Pro subscription plans, and as an add-on to other plans. If you are near your local airport contact us to learn about becoming a volunteer. If you are logged in, do a search in the Listener's Forum section on "Milaircoms". All other forms of data link connectivity are not authorized. Federal Aviation Administration 800 Independence Avenue, SW Washington, DC 20591 866.835.5322 (866-TELL-FAA) Contact Us On a chart, how can I find the frequency for flight following? Yes, the google maps, satellite view in most of the 600+ sites does get you very close. If you e-mail me what Centers you're after I'll give you some freqs to try. ForeFlights advanced hazard awareness capability and backup attitude indicator is now available on the iPhone, and it looks fantastic! To use Synthetic Vision, make sure you select and download high-resolution terrain for whichever regions you plan to fly in, using the settings menus at the top of More - Downloads. Does Counterspell prevent from any further spells being cast on a given turn? Aeronautical Maps, Maps View, Settings. Interesting Recordings Sm 6340-1) . The freqss can change on any given day. Out west, that's an important component of planning a flight. You can also choose between Light, Dark, and Classic map themes and toggle terrain features on and off. Boston ARTCC : 133.8500: Boston ARTCC : 134.8500: Boston ARTCC : 135.2250: Boston ARTCC (259.1) 134.5500: Boston ARTCC (291.6) 126.3500: Boston ARTCC (381.65) 128.4250: Boston ARTCC (388.8) 128.6750: Boston ARTCC: Cleveland ARTCC? - Mono audio cable (if using scanner) Nevermind I was just able to check it now online and it's definitely the low Sector 35 which extends from 11000 to FL230 (FL250 in some parts). When you call Norcal, they will just turn you over to Travis. As I mention in my own answer, I prefer the tabs on the chart because it includes the direction and the operating times along with the frequency. Theoretically Correct vs Practical Notation. LiveATC on Android communicate directly with pilots to conduct preflight briefings, where to find artcc frequencies Isgho Votre ducation notre priorit Can a VFR flight reference a waypoint in communication? Many will provide some level of information if asked. You can set the rings to automatically grow and shrink as you change zoom level, or set them to display flight times rather than distances. Ground 121.7 MHz. If you zoom in on the site you should be able to see the antenna farm in most cases. Is it known that BQP is not contained within NP? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. If you click on the transmitter site a window will appear with the frequencies being used at that site. CPDLCissued altimeter settings are excluded for this purpose, Initial contact is a safety validation transaction that compares a pilot's initiated altitude downlink message with an aircraft's stored altitude in the ATC automation system. To learn more, see our tips on writing great answers. So you're pretty close already click the balloon and see a photo. Great job George! Even if you're near an uncontrolled field, the AFD has a the frequency of the controlling agency/agencies for every field. Once they figure out where you are they'll work you or send you to the correct sector controller (or to Center if you're in the ARTCC's airspace). Every time your plane gets passed between controllers, an updated flight progress slip gets printed and distributed to the new controller. VATSIM Seattle ARTCC Maps. If you mess up they will tell you to contact the other frequency. As promised, here they are: Changes RCAG Old Frequency New Frequency Anniston AL 306.200 323.175 Athens GA 124.450 134.200 Augusta GA 323.000 322.325 Gadsden AL 133.800 124.500 Gadsden AL 353.700 270.325 The United States has 22 Air Route Traffic Control Centers (ARTCC). If you got flight following when you departed from a controlled field then ATC should tell you if you need to change frequency, unless of course they have to stop providing you the service because of workload or whatever. share. ForeFlight's data-driven Aeronautical Maps allow you to customize which map elements you show or hide. It was a few months ago since the last time I checked but at that time it was definitely the low sector 35. Both military and civil versions, Blimps / Airships Contact us for further info. They are operated by and are part of the Federal Aviation Administration of the U.S. Department of Transportation. Aviation Stack Exchange is a question and answer site for aircraft pilots, mechanics, and enthusiasts. They're all from the Jeppesen high 1/2 chart, so there shouldn't be any low altitude freqs listed here.