September 23, 2015


Photo: Smithsonian Institution
"Three Sisters" - Towers at Radio Arlington outside Washington, D.C.

Operator's desk at Navy Wireless Station NAA in Arlington, Virginia, 1915 

"Radio" was the nickname of  a residential neighborhood in Arlington County, Virginia, near U.S. Navy Wireless Station NAA. There was even a streetcar stop called "Radio." A trio of radio antennas – known to locals as ``The Three Sisters’’ – towered over the neighborhood. In their day, the towers were the world’s tallest. One was 45 feet taller than the Washington Monument. The station went on the air in 1913. Radio Arlington’s firsts included a transoceanic radiotelephone circuit with the Eiffel Tower in 1915 and regular broadcasts of time signals for ships at sea to calibrate navigational equipment.


On HF aeronautical frequencies, Gander Radio took over coverage of Canada's far north in 2007 to serve aircraft flying the polar route. Gander Radio is located in Newfoundland, off the east coast of Canada. Following is an excerpt from the official memo effective March 15, 2007:

ICAO High Frequencies and Remote Communications Outlet

North Bay, Ontario
Change of Ground Station

NAV CANADA, the country’s provider of air navigation services, recently reviewed the provision of ICAO High Frequencies (HF) and Remote Communications Outlets (RCO) provided by the North Bay Flight Information Centre (FIC). The review concluded that the ICAO 4 HF frequencies (2971, 4675, 8891, 11279) at Cambridge Bay and Iqaluit and the 1 RCO frequency (126.9 MHz) at Iqaluit could be provided more efficiently from the Gander International Flight Service Station (IFSS).

Accordingly, Gander Radio will serve as the Ground Station and provide the ICAO 4 HF frequency monitoring at Cambridge Bay and 1 RCO (126.9 MHz) and 4 HF coverage at Iqaluit.

September 15, 2015


The Radio League of America was founded by Hugo Gernsback, publisher of The Electrical Experimenter magazine, in December 1915. Introducing the league, the magazine reported it was a "purely scientific organization" and established "under the auspices of the world's greatest wireless men, who thoroughly indorse its principles."

The league organized "relays" to send Morse code messages along a chain of amateur radio stations. On Dec. 31, 1915, a message originated by William H. Kirwan at station 9XE in Davenport, Iowa, was relayed to most of the central states. To mark Washington's Birthday, a message originated on Feb. 22, 1916 was relayed across the country and delivered to President Woodrow Wilson and other government officials.

The league was instrumental in encouraging amateur radio operators to lend their skills to the military and enlist when the U.S. entered World War I. It was Gernsback's opinion that "if Uncle Sam grants the amateur the free use of the ether it is certainly up to the amateur to give something in return for the privilege," the magazine said.

As far as can be told, the Radio League of America faded into history after the final edition of The Electrical Experimenter was published in July 1920. Prior to the league, Gernsback founded the Wireless Association of America in 1909. In the 1930s, he established the Short Wave League in conjunction with his Short Wave Craft magazine.


Navy-Marine Corps MARS - a branch of the Military Auxiliary Radio System - ceased operations in September 2015 and its corps of licensed amateur radio operator were encouraged to join Army MARS or Air Force MARS.


Voice of Russia - successor to Radio Moscow - ceased broadcasting in 2014 and was replaced by the online Radio Sputnik. Listen

Radio Moscow
 was the Soviet Union's official shortwave broadcaster 
and an integral part of the country's Cold War propaganda.

At its peak, Moscow 
broadcast in over 70 languages via
transmitters in the Soviet Union, Eastern Europe and Cuba.

It started beaming programming to the U.S. in the 1950s.

After the fall of the Soviet Union, Boris Yeltsin, the Russian president, 
issued a decree reorganizing Radio Moscow as the Voice of Russia.

October 4, 2013


Radio operator Louis Sieck at St. Louis police headquarters in August 1930 in St. Louis Post-Dispatch file photo. The radio room was located on the roof. "Because the police system was an AM radio band, local citizens often tuned in to check the time - and what was going on in town," according to the Post-Dispatch.


CQ, CQ, CQ: View of radio room aboard U.S. Coast Guard cutter "Chelan" in mid-1930s from official Coast Guard archives.

On March 22, 1937, Chelan received a distress signal from the Norwegian steamer Bjerkli and was the first vessel to reach the scene on the Atlantic Ocean.

Chelan "took frequent direction finder bearings on the Norwegian and located her without difficulty," according to the Coast Guard.

In 1940, Chelan was assigned to the International Ice Patrol and transferred to Great Britain under the Lend-Lease program about a year later.

The cutter was launched in 1928.


Chief Operator Willy Speck in the radio room of the zeppelin Hindenburg in photo courtesy of the Luftschiffbau Zeppelin GmBH Archive. Speck died of injuries sustained in the May 6, 1937, explosion of the airship at Lakehurst, New Jersey. 

Hindenburg's radio room - located in the hull just above the control car - was equipped with both long wave and short wave radios capable of transmitting at 200 watts. The zeppelin's radio call sign was DEKKA.

2182 kHz

Image of Modern Ship Radio Console

On Aug. 1, 2013, the U.S. Coast Guard terminated regular radiotelephone service on medium wave frequency 2182 kHz, which was designated as an international distress channel in 1947.

“Advancements in satellite, digital, very high frequency (VHF), and high frequency (HF) radio communication equipment, including satellite service provider competition, have improved service and reduced costs of this equipment causing MF radiotelephone to become obsolete,” according to a Coast Guard notice published in the Federal Register on July 15.  

“The site deterioration, costly upkeep, and extensive maintenance required to support this legacy MF system, as well as the relatively minimal use by mariners, has led the Coast Guard to decide to discontinue support of the MF system,” the Coast Guard said.

May 22, 2013


Clear channel station AM radio stations cover a wide area via nighttime sky-wave propagation. By law, clear channel stations are protected from interference from others assigned to the same frequency. Output is limited to 50,000 watts.

(*) designates full power stations on same frequency
(Class B) denotes lower power station on same frequency

540 CBK, Watrous, Saskatchewan, Canada
640 KFI, Los Angeles, CA
650 WSM, Nashville, TN
*660 WFAN, New York, NY
*660 CFFR, Calgary, Alberta Canada
670 WMAQ, Chicago, IL (KBOI, Boise, Idaho: Class B) 
*680 KNBR, San Francisco, CA
*680 CJOB, Winnipeg, Alberta Canada
*680 CFTR, Toronto, Ontario, Canada
700 WLW, Cincinatti, OH
710 WOR, New York, NY
710 KIRO, Seattle, WA
720 WGN, Chicago, IL (KDWN, Las Vegas, NV: Class B) 
730 CKAC, Montreal Quebec, Canada
750 WSB, Atlanta, GA
760 WJR, Detroit, MI
*770 WABC, New York, NY (KKOB, Albuquerque, NM: Class B) 
*770 CHQR, Calgara, Alberta, Canada
*780 WBBM, Chicago, IL (KKOH, Reno, NV: Class B)
*780 CFDR Dartmouth, Nova Scoia, Canada
810 KGO, San Francisco, CA 
810 WGY, Schenectady, NY
820 WBAP, Fort Worth, TX
830 WCCO, Minneapolis, MN
840 WHAS, Louisville, KY
850 KOA, Denver, CO
860 CJBC, Toronto Ontario, Canada
870 WWL, New Orleans, LA
*880 WCBS, New York, NY (KRVN, Lexington, NE: Class B) 
*880 CHQT, Edmonton, Alberta, Canada
890 WLS, Chicago, IL (KDXU, St. George, UT: Class B)
990 CBW, Winnipeg, Manitoba, Canada 
*1000 WLUP, Chicago, IL
*1000 KOMO, Seattle, WA
1010 CBR, Calgary, Alberta, Canada
1020 KDKA, Pittsburgh, PA (KCKN, Roswell, NM Class B)
1030 WBZ, Boston, MA (KTWO, Casper, WY: Class B) 
1040 WHO, Des Moines, IA
*1060 KYW, Philadelphia, PA
*1060 CKMX Calgary, Alberta, Canada
*1070 KNX, Los Angeles, CA
*1070 CBA Moncton, New Brunswick, Canada
*1080 WTIC, Hartford, CT
*1080 KRLD, Dallas, TX
*1090 KAAY, Little Rock, AR
*1090 WBAL, Baltimore, MD
1100 WTAM, Cleveland, OH (KNZZ, Grand Junction, CO: Class B) 
*1110 WBT, Charlotte, NC
*1110 KFAB, Omaha, NE
1120 KMOX, St. Louis, MO (KPNW, Eugene, OR: Class B) 
*1130 KWKH, Shreveport, LA
*1130 WBBR, New York, NY
*1130 CKWX, Vancouver, British Columbia, Canada
1140 WRVA, Richmond, VA 
1160 KSL, Salt Lake City, UT
*1170 KVOO, Tulsa, OK
*1170 WWVA, Wheeling, WV
1180 WHAM, Rochester, NY (KOFI, Kalispell, MT: Class B) 
1190 KEX, Portland, OR
*1200 WOAI, San Antonio, TX
*1200 CFGO, Ottawa, Ontario, Canada
1210 WPHT, Philadelphia, PA (KGYN, Guymon, OK: Class B) 
*1500 WFED, Washington, DC
*1500 KSTP, St. Paul, MN
*1510 WLAC, Nashville, TN
*1510 KGA, Spokane, WA
*1520 WWKB, Buffalo, NY
*1520 KOMA, Oklahoma City, OK
*1530 KFBK, Sacramento, CA
*1530 WCKY, Cincinatti, OH
1540 KXEL, Waterloo, IA
*1560 KNZR, Bakersfield, CA
*1560 WQEW, New York, NY

May 21, 2013


News of the disaster was sent by wireless

Titantic's SOS as copied by SS Birma

Photo of Titanic wireless station

Following is a log of wireless traffic between the HMS Titanic and ships steaming to her rescue on April 15, 1912. All times are by the ship's clock.

12-15 a.m
CQD (6 times) DE (this is) MGY (6 times) position 41.44 N. 50.24 W
La Provence and Frankfurt receive Titanic's first distress signals.
Titanic sends position to FrankfurtFrankfurt says "OK: stand by"

12-15 a.m
Mount Temple heard Titanic sending CQD Says require assistance. Gives position. Cannot hear me (sic). Advise my Captain (sic) his position at 41.46 N. 50.24 W.

12-15 a.m.
Cape Race coast station hears Titanic giving position on CQD 41.44 N. 50.24 W.

12-18 a.m.
Ypiranga hears CQD from Titanic.   Titanic gives CQD here (sic).  Position 41.44 N. 50.24 W. Require assistance (calls about 10 times).

12-25 a.m.
Carpathia calls Titanic and says "do you know that Cape Cod is sending a batch of messages for you ?"
Titanic says "Come at once. We have struck a berg.
It's a CQD OM (it's a distress situation old man) Position 41.46 N. 50.14 W."
Carpathia says "Shall I tell my Captain ?. Do you require assistance ?"
Titanic says "yes, come quick"

12-25 a.m.
Cape Race hears MGY (Titanic) give corrected position 41.46 N. 50.14 W. Calling him, no answer.

12-25 a.m.
MGY (Titanic) says CQD, Here (is my) corrected position 41.46 N. 50.14 W. Require immediate assistance. We have collision with iceberg. Sinking. Can hear nothing for noise of steam (engineers releasing excess steam pressure from boilers to minimise risk of explosion) Sent about 15 to 20 times to Ypiranga.

12-26 a.m.
DKF (Prinz Friedrich Wilhelm) calls MGY (Titanic) and gives position at 12 a.m. 39.47 N. 50.10 W.
MGY (Titanic) says, "Are you coming to our ?" "We have collision with iceberg. Sinking. Please tell Captain to come." DKF says, "O.K. will tell"

12-27 a.m.
Titanic sends following: "I require assistance immediately. Struck by iceberg in 41.46 N. 50.14 W."

12-30 a.m.
Caronia sent CQ message (message addressed to all ships) to MBC Baltic and CQD (ie: a distress relay message): MGY(Titanic)  struck iceberg, require immediate assistance

12-30 a.m.
Mount Temple hears MGY (Titanic) still calling CQD. Our (sic) Captain reverses ship. We are about 50 miles off.

12-34 a.m.
Mount Temple hears Frankfurt give MGY (Titanic) his position 39.47 N. 52.10 W.
Titanic says (to Frankfurt) " are you coming to our
assistance ?"
Frankfurt says : "what is the matter with you ?"
Titanic says "We have struck an iceberg and sinking. Please tell Captain to come"
Frankfurt replies "O.K. Will tell the bridge right away"
Titanic says "O.K., yes, quick."

12-45 a.m.
Titanic calls Olympic (Olympic is Titanic's sister ship - 500 miles away en route to England) SOS.

12-50 a.m.
Titanic calls CQD and says, "I require immediate assistance. Position 41.46 N. 50.14 W." Received by Celtic.

12-53 a.m.
Caronia to MBC (Baltic) and SOS,"MGY (Titanic) CQD in 41.46 N. 40.14 W. Wants immediate assistance."

1-0 a.m.
MGY gives distress signal. DDC (Cincinnati) replies. MGY's position 41.46 N. 50.14 W. Assistance from DDC (Cincinnati) not necessary as MKC (Olympic) shortly afterwards answers distress call.

1-0 a.m.
Titanic replies to Olympic and gives his position as 41.46 N. 50.14 W., and says, "We have struck an iceberg."

1-2 a.m.
Titanic calls Asian and said, "Want immediate assistance" Asian answered at once and received Titanic's position as 41.46 N. 50.14 W., which he immediately takes to the bridge. Captain instructs operator to have Titanic's position repeated.

1-2 a.m.
Virginian calls Titanic but gets no response. Cape Race tells Virginian to report to his Captain the Titanic has struck iceberg and requires immediate assistance.

1-10 a.m.
Titanic to MKC (Olympic), "We are in collision with berg. Sinking Head down. 41.46 N. 50.14 W. Come soon as possible."

1-10 a.m.
Titanic to MKC (Olympic), Captain says, "Get your boats ready. What is your position?"

1-15 a.m.
Baltic to Caronia, "Please tell Titanic we are making towards her."

1-20 a.m
Virginian hears MCE (Cape Race) inform MGY (Titanic) "that we are going to his assistance. Our position 170 miles N. of Titanic."

1-25 a.m.
Caronia tells Titanic, "Baltic coming to your assistance"

1-25 a.m
Olympic sends position to Titanic 4-24 a.m. G.M.T. 40.52 N. 61.18 W, and asks "Are you steering southerly to meet us?" Titanic replies, "We are putting the women off in the boats."

1-27 a.m
Titanic says, "We are putting the women off in the boats."

1-30 a.m
Titanic tells Olympic, "We are putting passengers off in small boats." "Women and Children in boats, can not last much longer"

1-35 a.m.
Olympic asks Titanic what weather he had. Titanic replies, "Clear and calm."

1-35 a.m
Baltic hears Titanic say "Engine room getting flooded." 

1-35 a.m.
Mount Temple hears DFT (Frankfurt) ask "are there any boats around you already?" No reply

1-37 a.m.
Baltic tells Titanic, "We are rushing to you."

1-40 a.m.
Olympic to Titanic "Am lighting up all possible boilers as fast as (we) can."

1-40 a.m.
Cape Race says to Virginia: "Please tell your Captain this: "The Olympic is making all speed for Titanic, but his (Olympic's) position is 40.32 N. 61.18 W. You are much nearer to Titanic. The Titanic is already putting women off in the boats, and he says the weather there is calm and clear. The Olympic is the only ship we have heard say, "Going to the assistance of Titanic.  The others must be a long way from Titanic

1-45 a.m.
Last signals heard from Titanic by Carpathia, "Come as quickly as possible old man: the engine-room is filling up to the boilers"

1-45 a.m.
Mount Temple hears Frankfurt calling Titanic. No reply.

1-47 a.m.
Caronia hears Titanic though signals unreadable still. Virginia hears Titanic calling very faintly, his power being greatly reduced.

1-48 a.m.
Asian heard Titanic call SOS Asian answers Titanic but receives no answer.
DFT (Frankfurt) calls Titanic and says, "What is the matter with u ?"

1-50 a.m.
Titanic says to Frankfurt "You fool, stdbi and keep out"
Caronia hears Frankfurt working to Titanic.  Frankfurt according to position 172 miles from MGY (Titanic) at time first SOS sent out.

1-55 a.m.
Cape Race says to Virginian "we have not heard Titanic  for about half an hour. His power may be gone."

2-10 a.m.
Virginian hears 2 v's signalled faintly in spark similar to Titanic's.

2-17 a.m.
Virginian hears Titanic call CQ (call to all ships) , but unable to read him. Titanic's signals end very abruptly as (if) power suddenly switched off. His spark rather blurred or ragged...

2-17 a.m.
Virginian Called Titanic and suggested he should try emergency set, but heard no response.

2-20 a.m.
Virginian to Olympic,"have you heard anything about Titanic"   Olympic says, "No. Keeping strict watch, but hear nothing more from Titanic. No reply from him"

[2-20 a.m. was the official time the ship foundered in 41.46 N. 50.14 W. as given by the Carpathia in message to the Olympic.]

2-35 a.m.
Mount Temple hears MPA (Carpathia) send, "If you are there we are firing rockets."

2-40 a.m.
MPA (Carpathia) calling MGY (Titanic).

2-58 a.m.
SBA (Birma) thinks he hears Titanic so sends, "Steaming full speed for you. Shall arrive you
6-0 in morning. Hope you are safe. We are only 50 miles now."

3-0 a.m.
MPA (Carpathia) calling MGY (Titanic)

3-28 a.m.
La Provence to Celtic, "Nobody has heard the Titanic for about 2 hours."

4-24 a.m.
SBA (Birma) says "we are 30 miles S.W. off Titanic".

6-40 a.m.
Parisian hears weak signals from MPA (Carpathia) or some station saying Titanic struck iceberg. Carpathia has passengers from lifeboats

6-40 a.m.
Asian, with German oil tank in tow for Halifax asked what news of MGY (Titanic). Sends service (message) later saying heard MGY (Titanic) v. faint working. C. Race up to 10.0 p.m., local time. Finished calling SOS midnight.

7-40 a.m.

6-45 a.m. Mount Temple hears MPA (Carpathia) report rescued 20 boat loads.

8-07 a.m.
Baltic sends following to Carpathia: "Can I be of any assistance to you as regards taking some of the passengers from you? Will be in position about 4-30. Let me know if you alter your position."

8-10 a.m.
Baltic in communication with MPA. (Carpathia). Exchanged traffic re passengers, and get instructions to proceed to Liverpool

8-15 a.m.
Baltic turns round for Liverpool, having steamed 134 miles W. towards Titanic

8-40 a.m.
Mount Temple hears MPA (Carpathia) call CQ and say, no need to std. Bi (stand by) him. Advise my Captain (sic), who has been cruising round the icefield with no result. Ship reversed.

8-45 a.m.
Olympic sent MSG (message) to Owners, New York via Sable Island saying, "Have not communicated with Titanic since midnight."

8-55 a.m.
Carpathia replies to Baltic, "Am proceeding to Halifax or New York full speed. You had better proceed to Liverpool. Have about 800 passengers on board."

9-0 a.m.
Carpathia to Virginian: "We are leaving here with all on board about 800 passengers. Please return to your Northern course."

May 17, 2013


In the 1920's, EKKO stamps were a staple of the DX hobby.

Radio stations awarded EKKO stamps in exchange for reception reports and DXers collected the stamps in specially designed EKKO albums. 

The EKKO Company of Chicago made a tidy profit selling the stamps to the stations and the albums to the DXers.

Business was so good that the PM Bryant Company, also of Chicago, went into competition with EKKO.

Hundreds of broadcasters participated in the stamp programs.

For more information, click here.


Glenn Hauser's World of Radio

Radio Station "Peace and Progress" broadcast from the Soviet Union during the Cold War, supplementing Radio Moscow's programming with Soviet "public opinion." The station took to the airwaves in 1964, establishing a harsher tone than Radio Moscow even though it pledged to promote "mutual understanding, trust and friendship." Peace and Progress utilized Radio Moscow's shortwave transmitters. Its signal faded with the demise of the Soviet Union, representing genuine "Peace and Progress."

May 13, 2013

14.300 Mhz

The frequency 14.300 Mhz makes for interesting listening. The International Amateur Radio Union has designated 14.300 as a Global Emergency Center Of Activity. It's active around the clock with the Intercon Net, the Maritime Service Network and the Pacific Seafarer's Net. For more information, click here.

May 12, 2013


VOICE OF KOREA [Formerly Radio Pyongyang]

North Korean media uphold the personality cult of leader Kim Jong-un. News is disseminated by the Korean Central News Agency.


0400-0457 LA     11735, 13760, 15180

0400-0457 As     7220, 9445, 9730

0500-0557 As     13650, 15105

0600-0657 As     7220, 9445, 9730

1000-1057 LA     11710, 15180

1000-1057 As     11735, 13650

1300-1357 NA     9435, 11710

1300-1357 Eu     13760, 15245

1500-1557 NA     9435, 11710

1500-1557 Eu     13760, 15245

1600-1657 ME, Af 9890, 11645

1800-1857 Eu     13760, 15245

1900-1957 ME, Af 9875, 11635

1900-1957 Af     7210, 11910

2100-2157 Eu     13760, 15245

Schedule courtesy of Prime Time Shortwave

For Voice of Korea website, click here

For Wikipedia article, click here

May 9, 2013


Hugo Gernsback

Short Wave Craft was one of a stable of magazines published by Hugo Gernsback, who made significant contributions to the growth of early broadcasting.

The magazine was published in the 1930's and sponsored an organization called the Short Wave League. It featured construction projects, articles on the future of communications, station logs, reader correspondence - and colorful cover art.  

Gernsback's other publications included:
  • Radio and Television
  • Radio-Craft — July 1929 to June 1948 — became Radio-Electronics
  • Radio Electronics — July 1948 to January 2003
  • Radio Electronics Weekly Business Letter
  • Radio Listeners Guide and Call Book 
  • Radio News — July 1919 (as Radio Amateur News) to July 1948
  • Radio Program Weekly
  • Radio Review
  • Science and Invention — formerly Electrical Experimenter. Published August 1920 to August 1931.
  • Science and Mechanics — originally Everyday Mechanics. Changed to Everyday Science and Mechanics in 1931. "Everyday" dropped as March 1937 issue. Published as Science and Mechanics until 1976.

He also started WRNY, a New York City radio station that operated from 1925 to 1934. It was one of the first stations to have regularly scheduled experimental television broadcast starting in August 1928, according to Wikipedia.

However, Gernsback is best remembered as a science fiction writer and publisher of the magazines Amazing Stories and Wonder Stories. Today, the World Science Fiction Convention's annual awards are named "The Hugos" in Gernsback's honor.

For more Short Wave Craft covers, click here.


Canadian-born Reginald Aubrey Fessenden proved voice could be sent by wireless on Dec. 23, 1900. Fessenden transmitted speech over a distance of one mile at Rock Point, Maryland, using a high-frequency spark transmitter.

On Dec. 12, 1901, Italian Guglielmo Marconi received the first trans-Atlantic  signal at a  listening post in Newfoundland. Marconi's antenna - supported by a kite atop Signal Hill in St. John's - captured the Morse code letter "S" transmitted from England.

May 8, 2013


The little county roared on 41 meters.

Radio Tirana, from the capital of Albania, was a major player in international shortwave radio during the Cold War.

The Balkan country was ruled by Stalinist dictator Enver Hoxha, who broke with the Soviet Union and allied with China.

China supplied Radio Tirana powerful shortwave transmitters that beamed programming to North America.

The transmitters also relayed Radio Peking.

Programming included "Leafing Through Our Listeners' Letters" and "Culture and Art in Socialist Albania."

At sign-off Radio Tirana played the communist anthem "Internationale." 

Radio Tirana QSL Card from 1970s

For information on Radio Tirana today, click here.

April 26, 2013


The AT&T High Seas Service operated a ship-to-shore HF radio network consisting of stations WOO in New Jersey, WOM in Florida and KMI in California (photo).

The High Seas Service ceased operations on Nov. 9, 1999.

Today, WLO in Mobile, Alabama, is the only full service ship-to-shore provider of voice, data and e-mail services in the continental U.S.

WLO is operated by ShipCom, LLC.

For frequencies and other information , click here.