Special Program: Woofferton Transmitting Station’s 80th Anniversary on October 17, 2023

18 Replies

Many thanks to SWLing Post contributor, Dave Porter, who shares the following announcement:

Woofferton Transmitting Station UK – 80th Anniversary – October 17, 2023

To mark this anniversary Encompass Digital Media at WOF will be running a special programme on HF :

Tuesday 17th October 2023 from 1330 – 1430 UTC/GMT

Sender 95 Marconi (BD272 from 1963) 250 kW AM 15245 kHz Array 928 294* for North America

Sender 96 Riz 250 kW AMC 17785 kHz Array 904A 114* for Europe and beyond.

Sender 92 Riz 110 kW DRM 11725 kHz Array 909A 114* for Europe and beyond.

There will be an opening interval signal on all three frequencies.

The programme content will be historical facts of WOF in BBC, VoA, Radio Free Europe, R Liberty ,CBC etc and the later privatised times, DW and VoV for example as well as up-to-date information on DRM as well as personal recollections from many former WOF staff. There will be station idents of services over the years.

There will be a special e-QSL card and the chance to enter a competition to win a historic station artifact and an Woofferton 80th mug.

There may be more details to follow…

Watch this space

Dave Porter G4OYX

Broadcast coverage plots

Spread the radio love

Today is the day . . . The Great Medium Wave Grey Line Challenge!

17 Replies

It’s time to have some fun for a couple of hours chasing MW DX along the grey line. Please note: an important change has been made to the rules: you can choose either Civil Twilight at sunrise or Civil Twilight at sunset . . . but not both.

Here are the rules:

Frequency range is the medium wave band: 520-1710 kHz
From one hour before Civil Twilight your local time TODAY, Saturday, October 14, to one hour after Civil Twilight at your location . . . at either sunrise or sunset
Any radio with any antenna, but must be the radio at your location (no using remote internet radios)
The listener must hear the signal in real time
The stations must be ID’ed by listening to the signal.
Your report should include:
- Your name (or Internet handle)
- Your receiver and antenna (stay with the same setup from beginning to end; if you use multiple setups, provide a separate report for each).
- Your location
- The time, the frequency, and the ID of each station heard
- The total mileage of your top five most distant stations.

A final point: this is not a contest; it is a challenge. The reward for every participant will be fun and fellowship.

You can find when Civil Twilight begins at your location by visiting www.wunderground.com . Enter your location, click on “Full Forecast” then scroll down to the “Astronomy” section.

And when you have completed the Great Medium Wave Grey Line Challenge, please post your results in the comments below.

Spread the radio love

Important change to The Great Medium Wave Grey Line Challenge

Imagine the sound of international radio

2 Replies

Hi all SWLing Post Community, FastRadioBurst 23 here bringing you news of this week’s Imaginary Stations transmissions. Beamed to Europe via Shortwave Gold on Sunday 15th October 2023 at 2000 hrs UTC on 3975 & 6160 kHz, we have the third episode of Skybird Radio International bringing you music and culture from all over the world. Tune in and enjoy some great jazz, electronica, pop and dub.

A few hours later via the transmitters of WRMI on Monday 16th October we have a different episode of Skybird Radio International. The broadcast is at 0200 UTC on 9395 kHz and then repeated at 0300 UTC on 9455 kHz. No genres or no agendas, just some cool sounds from around planet earth featuring a collection of international platters that really do matter. Enjoy!

For more information on the shows please email [email protected] and check out our old shows here.

Spread the radio love

The weirdest shortwave tuning technique

24 Replies

By Jock Elliott, KB2GOM

You never know what you will encounter while simply “tuning around” on the HF frequencies. Just a few days ago around 2 pm local time, I happened upon the Maritime Mobile Service Network. Net control was being swapped from one ham to another, and it soon became clear that the hams running the net were smooth, articulate, and friendly to those checking into the net. The frequency was 14.300 USB.

According to the Maritime Mobile Service Network’s website:

Our primary purpose now is that of handling legal third party traffic from maritime mobiles, both pleasure, and commercial and overseas-deployed military personnel. We also help missionaries in foreign countries, and volunteer net control stations from throughout North America and the Caribbean maintain the network. Furthermore, these stations are assisted by relay stations to ensure total coverage of the Atlantic Ocean, Mediterranean & Caribbean Seas, and the eastern Pacific Ocean. The network, in particular, has been formally recognized for its work with emergency traffic by the Dept. of Homeland Security, the United States Coast Guard, and the National Weather Service, to mention a few.

The network acts as a weather beacon for ships during periods of severe weather and regularly repeats high seas and tropical weather warnings and bulletins from the National Weather Service and the National Hurricane Center.

The Maritime Mobile Service Net is operational every day from 12:00pm until 9:00pm Eastern Standard Time, and from 12:00pm until 10:00pm Eastern Daylight Time, on the 20-meter *Global Emergency Center Of Activity frequency of 14.300 MHz as outlined by the International Radio Union.

* At the International Amateur Radio Union (IARU) Region 1 meeting in 2005, it was decided that certain frequencies on certain amateur bands would be designated as “Global Emergency Center Of Activity” (GECOA) frequencies. The purpose of establishing the GECOA frequencies was to designate a place for passing emergency traffic on amateur frequencies, should the need arise. Over the next few years, Regions 2 and 3 followed suit in making the following frequencies world-wide GECOA frequencies. Those frequencies are: 21.360 MHz, 18.160 MHz, 14.300 MHz, 7.240 MHz, 7.060 MHz, 3.985 MHz, and 3.750 MHz. These and other frequencies, with their band plans, can also be viewed at www.iaru-r2.org/band-plan.

You can find out more about the MMSN here: https://mmsn.org/

Wow, I thought, this is definitely a net that I would like to listen to from time to time. Since MMSN operates from noon until 10 pm, I decided that night to see if I could hear it in bed on my CCrane Skywave SSB with its relatively small telescoping antenna. I extended the whip antenna skyward, clamped on the headphones, and listened to 14.300 USB. Nothing at first . . . but then I could hear some faint modulation in the background. Then, on a whim, I picked up the Skywave and started to wiggle it around, moving the whip in different orientations, in the hope of improving the signal.

To my surprise, it worked. I could hear the signal improve in some orientations of the whip and get worse in other directions. After a bit of experimentation, I got a positive ID on the Maritime Mobile Service Network with the whip at a 45 degree angle to vertical and pointed toward the North. Any other orientation yielded poorer results.

Now, here’s the thing: in years that I have been involved in messing about with radios – including the years I wrote for Passport To World Band Radio, QST, Popular Communications and Monitoring Times — never once did see or read anyone suggesting that picking up your portable shortwave and pointing the whip in different directions and orientations might improve the signal . . . not once.

Back in March, Thomas did a survey and found that 36.8 percent of SWLing readers used portables radios as their “daily drivers.” So, while it might look weird and might draw some stares if you are in a public place, try picking up your portable and pointing the whip at different angles and orientations to see if it improves a difficult to copy signal.

Based on my experimentation on both ham and shortwave broadcast signals, you might just be pleasantly surprised.

And if you already knew about this, or if you try it and it works, I would love to hear about it in the comments below.

Spread the radio love

HamSCI Reminder: Contribute to ionospheric research during the October 14, 2023 solar eclipse!

1 Reply

Many thanks to SWling Post contributor, Nick Hall-Patch, who shares the following announcement:

How DXers can contribute to ionospheric research during the 14 October 2023 solar eclipse

There will be an annular solar eclipse on 14 October, 2023 when, at totality, the size of the Moon’s disk will appear slightly smaller than the size of the Sun’s disk. This eclipse will affect all of North America, as well as Central and part of South America, as seen in the map below.

AM Broadcast Band DXers know that the blocking out of radiation from the sun during a total solar eclipse can introduce temporary night time listening conditions over an area far beyond the path of totality.

The upcoming annular eclipse is expected to have a similar effect on daytime medium wave listening conditions as would a total solar eclipse, and should not be missed by DXers. Live listening can be done during the eclipse, as well as recording the entire medium wave band, using SDRs (software defined radios).

There might be more to our DXing results than new and unexpected receptions of distant radio stations, however. The rapidly changing listening conditions will be indicating a similarly turbulent ionosphere, and DXers’ documenting those listening conditions through SDR recordings could provide information that will be useful to scientists who want to gain a better understanding of the Earth’s ionospheric dynamics.

How can DXers contribute to ionospheric research?

HamSCI is an organization of volunteer citizen-scientists and professional researchers who study upper atmospheric and space physics, and will be interested in examining MW DXers’ wideband SDR recordings made during both eclipses, and indeed, in having DXers assist with HamSCI’s research. In fact, IRCA members contributed to HamSCI’s work about the 2017 total solar eclipse by contributing their DXing results: https://hamsci.org/sites/default/files/publications/2019_am-eclipse2017_hall-patch.pdf

HamSCI is still welcoming experienced medium wave DXers who are using good quality SDRs, especially in the southeastern USA and in Latin America. Please go to https://hamsci.org/mw-recordings/ and discover how to make sure that those DX files will also qualify as scientific data that can become part of the public record.

It will be important to have many participants in this project. To sign up, please go to https://hamsci.org/mw-recordings/ and discover how to make sure that those DX files will also qualify as scientific data that can become part of the public record.

Those interested in finding out about all the research that HamSCI will be doing during the upcoming eclipses, check out https://hamsci.org/eclipse . Especially if you are also an amateur radio operator, there are several other ways that you might contribute to the project.

But, even if you can’t contribute to scientific research, don’t forget to get out there and DX during the eclipse. You might be surprised at what you can hear.

Spread the radio love

Announcing DXtreme Monitor Log 14!

4 Replies

Many thanks to SWLing Post contributor and supporter, Bob Raymond with DXtreme who shares the following product announcement:

Product Announcement

DXtreme Monitor Log 14™

DXtreme Software™ has released a new version of its popular logging program for radio and TV monitoring enthusiasts: DXtreme Monitor Log 14. Its familiar, uncluttered, industry-standard Windows® interface lets listeners and DXers log the stations they’ve heard using features that enhance their monitoring enjoyment.

New Features in Version 14

Signal Modes, Transmission Modes, Grid Square Tracking

We added a Signal Modes field to let users specify the signal mode their receiver is tuned to (for example, AM, CW, FM, LSB, USB, RTTY, etc.) plus a Transmission Modes field to let users specify the transmission mode the station is transmitting (for example, CW, FAX, FT8, HFDL, MIL-STD-188-141A, SSB, STANAG 4285, etc.). And we added Signal and Transmission Mode modules to let users maintain tables of signal and transmission modes.
We added a Transmission Mode Details box to allow users to type free-form information about the transmission mode received, such as baud rate, bandwidth, etc. (for example, 1200bps/L). New Log Variables enable users to share Signal, Transmission, and Detail mode information so readers (and users) can reproduce the monitoring environment and log (or relog) the stations. Here are two examples: “1200bps/L STANAG 4285 crypto tfc on USB” and “MIL-188-110A/B continuous mode idle on LSB.”
We added support for tracking Maidenhead grid squares, which is useful when monitoring/logging stations not located in traditional countries, like aircraft and ships operating in international airspace and waters. Grid squares are calculated from specified latitudes and longitudes. Both Performance and Stations reports let you track grids. Search functions let you find log entries for viewing or editing based on their grid squares.

Verification By Improv Imaging

Similar to the legacy Verification By Audio feature, where the presence of an audio file in a log entry designates the station as “Verified By Audio,” we added a Verification By Improv Imaging feature which counts the station as “Verified By Improv Image” if the Shows ID check box on the Improv Imaging tab is selected, indicating the presence of an ID on the window of a captured digital software application (such as PC-HFDL). Performance, Stations, and Log Entries reports let you track verifications by traditional QSLs, presence of Audio files, and presence of Improv Images for which the Shows ID check box is selected.

Schedule Checker Monitoring Advice and Tuning

When Schedule Checker advises users to monitor a station for a new or verified Country, it does so now for the Class (SWBC, Ute, Ham, etc.) and QSL Type (Verified By QSL, Audio, or Improv Image) selected in Properties. The foreground and background colors that indicate the Schedule Checker’s monitoring advice can be defined by users in Properties. The colors appear in an upgraded legend on the Schedule Checker.
Users can now tune their radios to the schedule item’s signal mode and frequency by selecting the desired signal mode in the Signal Mode list box and double-clicking the schedule item.

Solar Indices Enhancements

Acquisition of current solar indices has been improved on the Monitor Log and Schedule Checker windows. • Editing of solar indices has been added to the Monitor Log window for when NOAA is down.
We restored historic solar indices adjustments based on date and time changes made on the Monitor Log window provided users have downloaded historic solar indices from the NOAA FTP site into the Solar subfolder. An interface is provided on the Edit menu of the Monitor Log window for this FTP activity.

For more information about New Features, click https://www.dxtreme.com/monitorlog_whatsnew.htm.

Standard Features

Logging Stations

Monitor Log 14 lets users log all kinds of stations: radio, television, broadcast, utility, Amateur Radio, military, etc. across the radio spectrum.

Finding Stations to Monitor

The Schedule Checker lets users import schedules from Aoki, EiBi, and FCC AM web sites and display broadcast schedule data according to the filter criteria they specify. Users can filter schedule information by band, frequency, station, country, time of day, language, and more. EiBi schedules also include utility stations.

For each schedule item, Schedule Checker queries the Monitor Log 14 database to let users know – through user-defined, foreground and background display colors – whether they need to monitor a station for a brand new or verified country. The colors appear in a legend on the Schedule Checker window. When Schedule Checker advises users to monitor a station for a new or verified Country, it does so for the Class (SWBC, Ute, Ham, etc.) and QSL Type (Verified By QSL, Audio, or Improv Image) selected in Properties.

Reporting Reception

Users can create customized paper and e-mail reception reports for sending to stations plus log entry data shares for reporting catches to clubs and magazines. Using the Script Editor window, users can create and edit scripts that format reception reports, eReports, and shares to their liking. The software prompts users to select the script they want to use. Dozens of scripts come with Monitor Log 14. Users can also send eQSL requests to hams automatically via the popular https://www.eqsl.cc site and update their databases with downloaded eQSL.cc Inbox records.

Imaging

Improv Imaging lets users associate ad hoc images with log entries using Capture, Scan, and Clipboard functions. Captures of stations received on digital applications, waterfall displays, facsimile and Amateur TV pictures are popular. The Improv Imaging tab and Application let users view images anytime, and an Improv Image Explorer lets them peruse their entire collection and display associated log entries. A QSL Imaging facility functions the same as Improv Imaging for associating QSLs.

Other Features

Rig Control — Retrieves the frequency and mode from supported radios and permits tuning from the Schedule Checker and Direct Tune. Rig control is provided through integration with Afreet Omni-Rig (http://www.dxatlas.com) and CAT for SDR applications like SDR Console (https://www.sdr-radio.com) and SDRuno (https://www.sdrplay.com).
Audio Archiving — Lets users maintain an audio archive of stations heard.
Reporting and Searching — Produces Performance, Stations, and Log Entry reports that track the performance and progress of the user’s monitoring station and provides criteria-based log entry searches.
Documentation — Context-sensitive Procedural Help, Field Help, and Microhelp are accessible on every window to provide instructions quickly. Installation Instructions and a Getting Started Guide also included.

Supported Operating Systems, Pricing, Contact Information

DXtreme Monitor Log 14 runs in 32- and 64-bit versions of Microsoft® Windows® 11, 10, 8.1, 8, 7, Vista® XP. Retails for $94.99 USD for Internet distribution (discounted pricing for upgrades available). Product support by Internet e-mail. For more info, visit (https://www.dxtreme.com) or write [email protected].

SWLing Post readers should note that DXtreme was one of our first company supporters. Their ad revenue helps bring the SWLing Post to you daily. Thanks, DXtreme!

Click here to check out DXtreme Monitor Log 11.

Spread the radio love