Category: Ham Radio

With the NASA/SpaceX Crew Demo 2 coming up, I thought it was a good time to revisit the ability to listen to NASA on the radio.

I dug out this Monitoring Times PDF last updated in 2006 to use as a starting point. Other resouces include RadioReference.com, the SpaceX Reddit and some folks at the Johnson Space Center ARC.

If you have any updates or additions please email me at N4BFR at arrl.net.
(Updated 5/27)

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Mission Audio

Florida Space Coast

• 146.940 MHz FM repeater rebroadcasts NASA Audio and Launch information
  (Confirmed February 2020) > http://www.titusvillearc.org/
• N1KSC plans to relay audio in conjunction with NASA’s Public Affairs office. This will be on 444.925 MHz. > List of Planned Events

Houston

• W5RRR carried some audio in the shuttle days, but has not yet published if they would carry the DEMO-2 audio. If they do, it would likely be on 146.640 MHz FM.

Space to Ground

The Monitoring Times article lists these frequencies for Space to Ground communications for the US “On-Orbit Segment”

• S-band
  2265.00 MHz – Downlink (6 MHz Bandwidth)
  2287.5 MHz Telemetry Downlink (Also listed as TDRSS Downlink Frequency)
• Ku-band
  15.0034 GHz Downlink (100 MHz bandwidth)
• Ka-band
  22.55-23.55 GHz TDRSS
  25.25-27.50 GHz Proximiy Link / TDRSS

Special Temporary Authority Frequencies

SpaceX (Space Exploration Technologies Corp.) recieves special use permits for some frequencies related to launch. Thanks to Reddit for documenting them. >https://old.reddit.com/r/spacex/wiki/permits/fcc/missions

• WF9XGI – Telemetry from the Dragon2 Capsule
  • 2203.2 MHz, 2216.0 MHz, 2287.5 MHz “Dragon S-Band Directional Array”
    20 Watts
• WG9XHP – Telemetry for sub-orbital first stage and orbital second stage.
  • 2247.5 MHz, 2255.5 MHz, 2232.5 MHz, 2272.5 MHz – 3.5 to 4.167 Mbps Signal
• WJ9FXQ – Autonomous Drone Ship
  • 2090.0 MHz – 600 kbps signal
    One Watt
• WI2XUB – “Commanding to Spacecraft”
  • 2106.40625 Mhz – 12 Kbps Signal
    One Watt. Authorized for Cape Canaveral including Port Canaveral Recovery Dock Ship, Vandenberg AFB; Kodiak AK; Pensacola FL including Pensacola NAS Dock Ship; Inarajan Guam; Boca Chica TX; Daytona Fl Recovery Location Ship; Jacksonville FL Recovery Location; Panama City Recovery Location; Tallahassee Recovery Location; Tampa Recovery Location.

HF Operations

@MilcomMP on Twitter this morning (5/27) that “Cape Radio” on 10780 Khz is active.

Echolink

For Ham Radio operators, Twitter user @KO4AQF says listen to Echolink node 3082 for NASA.

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Monitoring in Brevard County

Digital Trunked

There are several digital trunked systems in Brevard County that show up on the RadioReference.com website of interest > https://www.radioreference.com/apps/db/?ctid=320#cid-7120

• Kennedy Space Center
  • 406.2375 MHz Primary Control Channel (P25 II)
    Based on the Radio Reference list, this appears to cover talk groupsused for SpaceX, Orion, SLS and other operations frequencies.
    
• SpaceX 900 MHz
  • 935-939 MHz (Moto TRBO)
    Radio Reference only reports an “Operations” talk group.
    
• SpaceX 400 MHz
  • 464.7375 Primary Control Channel for Cape Canaveral (Moto TRBO)
    Radio Reference lists 2 “Operations” talk groups
    
• 45th Space Wing – US Space Force
  • 386.375 MHz Primary Control Channel (P25 I)
    Radio Reference lists mostly security, fire and base operations talk groups.
    

Associated Frequencies

(Also see NOTAM / NTM information below)

• Air Traffic Control
  • KXMR – Cape Canaveral AFS Skid Strip
    118.625 MHz AM
    143.150 MHz AM
    239.05 MHz AM
  • KCOF – Patrick SF Station
    133.750 MHz AM Ground
    269.375 MHz Ground
    132.650 MHz AM – Orlando ATC Departure and Arrival
  • TTS – Shuttle Landing Facility
    128.550 MHz AM Tower
    284.000 MHz Tower
    134.95 MHz Orlando ATC Departure and Arrival
  • Aviation Emergency / GUARD frequencies
    121.500 MHz AM
    243.000 MHz
• Coast Guard Emergency
  • 15.6800 MHz FM

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Amateur Radio on the ISS

ARISS is ham radio communications to and from the ISS, not mission audio. This is also used when schools “Talk to an astronaut.” More on ARISS > https://www.ariss.org/

• 145.800 MHz FM Voice & Slow Scan TV Repeater Downlink
  • 145.490 MHz Voice Uplink (Americas, Pacific, S. Asia)
  • 145.200 MHz Voice Uplink (Europe, Russia, Africa)
• 145.825 MHz Packet Uplink and Downlink
• 437.550 Mhz Packet Uplink and Downlink
• 437.800 Mhz Repeater Downlink
  • 145.990 MHz Repeater Uplink (Requires PL of 67 Hz)

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Notice to Mariners / Notice to Airmen

Because of risks to aviation and marine traffic, notices are published to avoid the areas of launch and rocket landing. While not specifically radio related they may at times carry frequency information.

USCG District 7 reports in LMN07202020

ATLANTIC OCEAN - FLORIDA - CAPE CANAVERAL: EASTERN RANGE OP# X0053 FALCON 9 CREW DEMO-2

Eastern range will be conducting hazardous operations surface to unlimited within portions of Warning Areas W497A, W497B, W137F/G, W138E,W139E/F, W140, W141, W122 and the following Hazard Areas. 

THIS IS A MANNED SPACE LAUNCH

A: From 2838 25.89N 8037 17.06W
TO 2839N 8037W
TO 2901N 8014W
TO 2858N 8011W
TO 2834N 8029W
TO 2833 32.69N 8034 1.72W to beginning

B: From 3122N 7744W
TO 3201N 7716W
TO 3218N 7641W
TO 3212N 7634W
TO 3142N 7652W
TO 3117N 7740W to beginning

Hazard periods for primary launch day and backup launch days;
Primary launch day: 27 / 2022Z thru 27 / 2107Z May 20. Preferred T-0 is 2032Z.
Backup launch day (1): 30 / 1911Z thru 30 / 1956Z May 20. Preferred T-0 is 1921Z.
Backup launch day (2): 31 / 1849Z thru 31 / 1934Z May 20. Preferred T-0 is 1859Z.

Related Frequency Information:

If a vessel equipped with AIS is determined to be entering the launch hazard area, an addressed safety message 14 with the text "REGULATED
AREA 33 CFR 165.775 ACTIVE STAY CLEAR" will be transmitted to the vessel. All provisions of the safety zone remain in effect; no person or vessel may enter, pass through or remain within the safety zone unless authorized by the Captain of the Port. Mariners are required to contact the Coast Guard via VHF FM channel 16 to arrange for this authorization.

Marine Channel 16 is on 156.800 MHz using FM modulation.

The FAA has published Facility ZJX (Jacksonville Center) NOTAM 0/1729 for 5/27/20. It reads in part:

!FDC 0/1729 ZJX PART 1 OF 6 FL..AIRSPACE CAPE CANAVERAL, FL..TEMPORARY FLIGHT RESTRICTIONS. 
MAY 27, 2020 LOCAL. 
PURSUANT TO 49 USC 40103(B)(3), THE FEDERAL AVIATION ADMINISTRATION (FAA) CLASSIFIES THE AIRSPACE DEFINED IN THIS NOTAM AS 'NATIONAL DEFENSE AIRSPACE'. PILOTS WHO DO NOT ADHERE TO THE FOLLOWING PROCEDURES MAY BE INTERCEPTED, DETAINED AND INTERVIEWED BY LAW ENFORCEMENT/SECURITY PERSONNEL. ANY OF THE FOLLOWING ADDITIONAL ACTIONS MAY ALSO BE TAKEN AGAINST A PILOT WHO DOES NOT COMPLY WITH THE REQUIREMENTS OR ANY SPECIAL INSTRUCTIONS OR PROCEDURES ANNOUNCED IN THIS NOTAM

...

THE FOLLOWING OPERATIONS ARE NOT AUTHORIZED WITHIN THIS TFR: FLIGHT TRAINING, PRACTICE INSTRUMENT APPROACHES, AEROBATIC FLIGHT, GLIDER OPERATIONS, SEAPLANE OPERATIONS, PARACHUTE OPERATIONS, ULTRALIGHT, HANG GLIDING, BALLOON OPERATIONS, AGRICULTURE/CROP DUSTING, ANIMAL POPULATION CONTROL FLIGHT OPERATIONS, BANNER TOWING OPERATIONS, SIGHTSEEING OPERATIONS, MAINTENANCE TEST FLIGHTS, MODEL AIRCRAFT OPERATIONS, MODEL ROCKETRY, UNMANNED AIRCRAFT SYSTEMS (UAS), AND UTILITY AND PIPELINE SURVEY

No specific frequencies are given, but the Aviation “GUARD” frequencies are 121.500 MHz AM for civil aviation and 243.0 for Military.