Category Archives: Shortwave Radio

August 28: BBC Atlantic Relay station special DRM broadcasts

DRM will be part of a big anniversary on a small island in the Atlantic Ocean. On 28th of August at 1155 GMT Babcock International will ensure a special BBC digital transmission on 21715 kHz from the BBC Atlantic Relay station, marking the fiftieth anniversary of the BBC’s first short-wave radio broadcast from Ascension Island.

Since 1966, the Atlantic Relay station has broadcast BBC World Service programmes to Africa and South America, and to this day, continues to broadcast over 250 programme hours every week to East and West Africa in English, French, Hausa and Somali.

The two hour-transmission on 21715 kHz will start with the old, special sound of Bow Church Bell in east London, the sound of which, even if in DRM this time, will remind older listeners of the BBC broadcasts of many decades ago. The 21-hour transmission will be the regular BBC programmes for West and South Africa and will end at 1400.

DRM – Digital Radio Mondiale, is an international digital radio standard designed by broadcasters, for broadcasters, in co-operation with transmitter and receiver manufacturers. DRM is a high quality digital replacement for analogue radio broadcasting in the AM and FM bands.

This special transmission will be sent with greetings from Ascension Island’s BBC and Babcock International staff and visitors, who will be celebrating half a century of sterling broadcasting on August 28th.

Click here to read more about the fascinating history of the BBC’s broadcasts from Ascension Island.

Transmission Details

FREQ TIME (UTC) SERVICE TX kW Bearing Day LANG TARGET

21715 1155-1201 BBC DRM ASC 250 114 1 English S. Africa (Special Announcement)

21715 1201-1400 BBC DRM ASC 250 114 1 English S. Africa (English – ENAFW)

21715 1400-1430 BBC DRM ASC 250 250 1 English Brazil (English – ENAFW)

Additional analogue transmission will broadcast from 13.30 GMT for ceremonial purposes.

15105 1330-1430 BAB ASC 250 27 1 English W. Africa (Special Announcement)

Radio Fana 6110 kHz Ethiopia; excellent SNR with Elad FDM DUO

Video: Elecraft KX2 daytime shortwave AM performance

The Elecraft KX2 now has AM mode!

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The Elecraft KX2 at the 2016 Hamvention

Many thanks to a number of SWLing Post readers (including, Eric, Dave, Jim and Greg) who shared the following message from Wayne (N6KR) on the Elecraft message boards:

We added AM mode to the KX2 today, both transmit and receive. Its primary purpose is for SWL (short-wave listening), i.e. copying commercial AM stations. (Remember that the KX2’s sensitivity drops off rapidly below 2 MHz due to protective high-pass filtering, so it wouldn’t be your first choice for AM brodcast-band DXing.)

AM transmit is far less efficient than SSB, so it would typically be used only if the target receiver can’t demodulate SSB, or for special applications. For example, there’s some AM activity and experimentation in the ham bands, notably around 3.870 kHz at night. I’ll have to drop in with 10 watts (carrier + sidebands) and get a report 🙂

While the KX2 was optimized for SSB, AM mode sounds fine, and of course is easier to tune than when using SSB modes with AM. In AM mode, the operator can select 1, 5, 9, or 10 kHz steps for course tuning using the VFO CRS menu entry. (Yes, some countries use 9 kHz intervals between stations.)

If you’re interested in testing AM mode on the KX2, please email me directly.

73,
Wayne
N6KR

On Sunday, I ordered a KX2 (with ATU, rechargeable battery pack, quick charger and paddles)–it should arrive next Monday. First thing I’ll do is upgrade the firmware so it’ll have AM mode.

Many thanks to Wayne (N6KR) for putting this KX2 upgrade at the front of the (long) line of requests. I’ll be reviewing the KX2 for the November issue of The Spectrum Monitor magazine and, as an avid SWL, AM mode adds an important dimension to my evaluation. (Truth is, I know that Wayne has a soft spot for SWLing too.)

Click here for a previous post with more information and photos of the Elecraft KX2.

Click here to view the KX2 on Elecraft’s website.

Reminder: The Classics Experience with Paul Walker

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(Source: Paul Walker)

The next broadcast of The Classics Experience with Paul Walker is going to be the biggest yet. It’ll all take place in late August with 2 hours of rock n roll music with maybe a few country songs thrown in for good measure. The show is ALL about the music and providing something different on the shortwave bands, so all you’ll get from the show is MUSIC. There will be NO rants, raves, personal opinions or political and religious rants. No commercials or sponsors either. I fund the broadcast out of my own pocket so I can pick whatever music I want and not have to answer to anyone but George D. Beagle!

WRMI 7570kHz Saturday August 27th 0400 to 0600UTC. Beaming at 315 degrees towards Vancouver. It should provide a good signal to the West Coast of the US and Canada and probably parts of the midwest and upper midwest along the way.

WRMI 11580kHz Friday August 26th 2100 UTC to 2300UTC., This signal target area is Eastern North America and Western Europe.

WRMI 11530kHz Saturday August 27th, 0200UTC to 0400UTC targetting South America with maybe a little spill over to extreme Western Africa.

WINB 9265kHz Saturday August 27th 0330 to 0530UTC. This should provide good coverage into the Midwest, parts of southern Canada, into Mexico along with parts of Central & Southern Europe it seemed.. It was weakly heard in Australia and New Zealand during my last broadcast.

Channel 292 6070kHz Friday August 26th 2200 to 2400UTC. This should provide good coverage of central and parts of Western Europe.

Shortwave Services 15195khz via Armenia Saturday August 27th 1200 to 1400UTC. Beaming at 65 degrees towards Japan.

I am going to suspend my request for $ to cover postage and QSL costs. I’ve been so lax in sending out QSL cards, I haven’t gotten around to any of them from previous broadcasts and have gotten a few nastygrams about it. I feel bad, so I won’t ask for any money to cover costs this time around.

Contact information for reception reports:
Paul B. Walker, Jr.
PO Box 353
Galena, Alaska 99741-0353 USA

There may be MFSK32 data and pictures during the broadcast. I will announce during the broadcast if and when that happens.

Details Emerge: The PantronX Titus II DRM Portable Receiver

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Many thanks to SWLing Post contributor, Harald Kuhl (DL1ABJ), who shares more details about the new Titus 2 DRM receiver via the DRM Consortium Chairman, Ruxandra Obreja:

NEW DRM RECEIVER UNVEILED at HFCC MEETING IN MIAMI, FLORIDA THIS WEEK!

The HFCC meeting is being held 22-26 August in Miami and on this occasion there was a live DRM transmission form Radio Vaticana received on the new Titus2 DRM receiver (pls. see attached document with picture and details) http://www.drmna.info/.

Here is also a little testimony of how this prototype to be sold “at under 100 dollars” performed from Ray Robinson, Operations Manager at KVOH (Voice of Hope / Voz de Esperanza):

I’m currently at the HFCC conference in Miami, and reception of the DRM broadcast here this afternoon was very successful. Reception was made outside the hotel on two receivers – a NewStar DR-111 and a brand new pre-production receiver from Pantronix called the Titus 2, with a cluster of attendees gathered round taking photos and videos. The latter receiver is based on an Android tablet in a stereo radio format with one speaker each side of the central horizontal tablet. Reception on both radios was solid throughout, on a day when analog reception on 16m was plagued with a lot of atmospheric noise. We haven’t done detailed calculations, but figure there were probably at least three hops from Italy to Miami, and for a daylight path, the reception quality was nothing short of astounding.

Click here to download the Titus II PDF brochure.

The PantronX Titus II: A New DRM Receiver

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titus 2 big

I had heard rumors that a new DRM receiver was in the works, but had not yet seen any specifications. DRMNA.info has just posted a few specs:

The PantronX Titus II is actually a full SDR solution in a boombox case. Few details yet, but it is running Android, has a 100 kHz to 2 GHz receiver on-board and decodes AM, FM, SSB and DRM natively.

It uses a Quad-core Arm A53 @ 1.2 GHz, 1 Gig of RAM and 8 Gig of on-board Flash. 7″ TFT display and supports Android 5, 6 or custom remixes.

Click here to read the full post at DRMNA.info…