Tag Archives: ARRL

ARRL reports California earthquakes disrupted west coast HF propagation

(Source: Southgate ARC)

The ARRL reports earthquakes in California disrupted HF propagation on the west coast

British Columbia radio amateur Alex Schwarz, VE7DXW, said that an Independence Day magnitude 6.4 earthquake in California’s Mojave Desert and multiple aftershocks negatively affected HF propagation on the US west coast.

Schwarz, who maintains the “RF Seismograph” and has drawn a correlation between earthquake activity and HF band conditions, said the radio disruption began at around 1600 UTC on July 4, and continued into July 5. He said that on July 4, the blackout was total except for 20 meters, where conditions were “severely attenuated,” Schwarz said. The RF Seismograph also detected the magnitude 7.1 earthquake on July 6 in the same vicinity, Schwarz reported. The distance between the monitoring station in Vancouver, British Columbia, and that quake’s epicenter is 1,240 miles.

“Things are back to normal after the strong quake, as far as the ionosphere is concerned, but the unrest has not stopped yet,” Schwarz told ARRL on July 8.

Read the full ARRL report at
http://www.arrl.org/news/view/report-california-earthquakes-disrupted-hf-propagation-on-west-coast

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Grand Solar Minimum may lie ahead according to an article in Nature

(Image: NASA)

(Source: ARRL News)

juried research paper in Nature, “Oscillations of the baseline of solar magnetic field and solar irradiance on a millennial timescale,” suggests that a “grand solar minimum” — similar to the legendary “Maunder Minimum” — is approaching, starting as early as next year and lasting for three solar cycles. That would be bad news for HF enthusiasts, who are already struggling with marginal conditions.

As the paper’s abstract explains, “Recently discovered long-term oscillations of the solar background magnetic field associated with double dynamo waves generated in inner and outer layers of the Sun indicate that the solar activity is heading in the next three decades (2019–2055) to a Modern grand minimum similar to Maunder one.”

As propagation buff and contester Frank Donovan, W3LPL, observed, “It’s very uncertain if this forecast is correct, but as usual the forecasts of the next solar cycle are all over the map. Let’s hope these scientists are wrong.”

Click here to read this article via the ARRL News.

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FCC reaches settlement with church-related pirate radio station

Photo by Michael Maasen

Many thanks to SWLing Post contributor, Ron, who shares the following news via the ARRL:

After filing a civil action and seeking an injunction to stop a church-related pirate radio station from operating in Worcester, Massachusetts, the US Attorney’s Office this week reached a settlement with the station’s operators, Vasco Oburoni and Christian Praise International Church. US Attorney Andrew E. Lelling and FCC Enforcement Bureau Chief Rosemary Harold announced the settlement on June 10. […]According to a consent decree filed on June 10 and subject to court approval, Oburoni and Christian Praise International Church agree not to do so in the future. They also agreed to surrender all of their broadcasting equipment.

“In the event the FCC reasonably suspects that they have violated the Act, the FCC may inspect the premises and seize any broadcasting equipment,” an FCC news release said. If the FCC determines that “the defendants” have operated an unlicensed broadcasting station in violation of the settlement, they will be subject to a $75,000 fine. The FCC received complaints, including one from a licensed broadcaster, that the pirate station was causing interference.

According to the signed consent decree, Vasco Oburoni and Christian Praise International Church admitted that they operated a radio broadcast station in Worcester, on 97.1 MHz, without an FCC license and previously had operated an unlicensed radio station on 102.3 MHz. The FCC had issued multiple warnings and issued a Forfeiture Order in the amount of $15,000 against Oburoni. The FCC said Oburoni agreed to a payment plan but later began broadcasting again without a license on a different frequency.

Click here to read the full story at the ARRL.

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HF military communication exercise announcements on WWV/WWVH

(Source: ARRL News via Eric WD8RIF)

The US Department of Defense (DOD) plans to start making use of a provisional time slot on WWV and WWVH to announce upcoming HF military communication exercises and how the Amateur Radio community can become involved in them. The announcements will occur at 10 minutes past on WWV and at 50 minutes past on WWVH. WWV and WWVH transmit on 2.5, 5, 10, 15, and 20 MHz.

“DOD’s use of the broadcast time slot on WWV/WWVH will benefit the MARS program’s mission of outreach to the Amateur Radio community,” said US Army Military Auxiliary Radio System (MARS) Program Manager Paul English, WD8DBY. “The actual messages to be broadcast are coordinated by the DOD Headquarters that the MARS program supports.”

The initial announcements are set for the period April 20 – May 3, which coincides with the “Vital Connection” interoperability exercise to be held in Wisconsin. Future time slots will coincide with the Vital Connection exercise Ohio in June; DOD COMEX 19-3 in August, and the DOD COMEX 19-4 in October. Following the proof of concept this year, DOD anticipates making use of the WWV/WWVH broadcast time slot full time, year-round.[…]

Click here to read the full article via the ARRL News.

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Tune in: Holiday serenades from McMurdo Station, Antarctica

McMurdo Station, Antarctica. (Source: USAP.gov)

Many thanks to SWLing Post contributor, Ron, who shares the following tip from the ARRL News:

Each year, volunteers at McMurdo Station, Antarctica, celebrate the holidays by serenading those at the remote, Antarctic field camps via HF radio. This year, ham radio operators and SWLs around the world are invited to listen in and email listener reports. The broadcast will be on Sunday, December 23, 2300 UTC (December 24, 1200 New Zealand Time), on 7,995 kHz USB.

Email reports to Nathaniel Frissell, W2NAF. Request QSLs via W2NAF on QRZ.com.

This is some very weak signal DX, but I try tuning in each year. Please comment if you’re able to snag their elusive Christmas Eve signal!

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