The Friedrichshafen exhibition grounds. (Photo: Ham Radio Friedrichshafen)
Many thanks to SWLing Post contributor, Alexander (DL4NO), who shared a few notes with me from his visit at the Friedrichshafen Ham Radio convention. Alexander has kindly allowed me to post his notes here on the SWLing Post. Alexander writes:
The first booth I visited was of Dokufunk (http://www.dokufunk.org/). They collect QSLs and other information about wireless history for scientific evaluation. Its head Wolf, OE1WHC, was a moderator for the Austrian shortwave service which does not exist anymore. But ORF still supports Dokufunk. They have a large archive and even the equipment to digitize large quantities if information. I brought them a package of ham radio periodicals, mostly issues of DL-QTC, the predecessor of cqDL, and got some QSPs (magazine of OEVSV) back. I collect those periodicals to gain and provide access. Seehttp://www.dl4no.de/thema/amateurfunk-zeitschriftenarchiv.htm, catalog at the bottom.
The flea market filled three exhibit halls. If you needed a tube heating for your shack you had a wide choice, from radios to ham equipment to scopes. On the newer side you could get Windows XP packages with the appropriate hardware.
Flea Market Photos Courtesy of Ham Radio Friedrichshafen
A3: Stand mit historischem Radiogeräten
A3: Stand mit Empfängern und Messgeräten (Photo: Ham Radio Friedrichshafen)
A3: Stand mit Empfängern und Messgeräten, hier zwei Schweizer an einer historischen Feld-Telefonzentrale (Photo: Ham Radio Friedrichshafen)
A3: Koffer mit Ham-Radio-Aufklebern aus mehreren Jahrzehnten (Photo: Ham Radio Friedrichshafen)
A3: Alte Radiogeräte (Photo: Ham Radio Friedrichshafen)
A3: Alte Empfänger und Radios (Photo: Ham Radio Friedrichshafen)
A3: Stand mit Empfängern und Messgeräten (Photo: Ham Radio Friedrichshafen)
Yaesu, Icom & Co where there, of course. A large part of Hall 1 had booths for most of the European ham radio societies and other entities. Several attractions for the youths were there: A fox hunt around the hall, possibilities to solder simple circuits and more. The exhibit center even provides a kindergarden.
A1: Hilberling PT 8000A (Photo: Ham Radio Friedrichshafen)
A1: ICOM (Photo: Ham Radio Friedrichshafen)
A1: Wimo, BABY Loop (Photo: Ham Radio Friedrichshafen)
A1: YAESU Funkgeräte (Photo: Ham Radio Friedrichshafen)
Hamradio had lots of presentations. The “SDR Academy” run all over Saturday – completely in English. See http://www.sdra-2016.de. Last year’s presentations are on Youtube. Search for “SDRA-2015”.
My presentation was titled “HAMNET On 70 cm – Possibilities and Limitations”. I should explain that HAMNET is our way to use the 126.96.36.199/8 TCP address space reserved for Ham Radio use. Starting in Germany and especially Austria we use more or less standard WLAN equipment to build a ham radio intranet. User access is mostly on 2.3 GHz and links on 5 GHz. Where we have gaps in the wireless coverage we use Internet wormholes. This way you can access for example packet radio sites in Canada. See http://hamnetdb.net.
2,3 GHz and up means exclusively line-of sight connections. Quite some OMs cannot reach access points this way. The only alternative up to now has been VPN connections through the Internet. I think we could provide relatively fast access on 70 cm. Here in Germany we have two 200-kHz channels for such uses. They were defined in the 1980s for packet radio access up to 76 kbps. This technology is next to dead.
Theoretical calculations show that we could provide up to 1 Mbps and cover up to 50 km if we use modern modulation schemes. You could even improve throughput by making TCP/IP less gossipy. I proposed to use SDR blocks like HackRF or LimeSDR and combine them with a RF frontend (filter, preamp, PA, fast switching). The hardware is more or less readily available, but this is mostly a software topic. While HAMNET relies on standard WLAN equipment with all its limitations for ham radio usage, this system could be completely open. We could it adapt to all our needs and ideas. In the end we could port it back to the microwave bands.
Even if we only work on the lowest protocol levels this will pose quite some challenges. We would need programmers with quite varied expertise from TCP/IP protocols to SDR technology. My presentation was to attract such people. Personally I will not program anything. As a technical writer with a quite wide expertise I might be a bracket for the project and write documentation for it.
A “Peltier Lamp”: The candle heats one side of the Peltier element while the other is cooled by the heat sink. This produces enough electricity to light a LED. (Photo: Alexander DL4NO)
At the opposite end of the exhibit center another fair went on, called Maker Faire. In former times you would have called it “make it yourself”. The exhibits there went from computer modding to 3D printing, knitting and also ham radio. For this I modified my presentation a bit: “WLAN Below 1 GHz – Do You Want To Program For It?” The technology I talked about is near hot topics like Internet of Things or traffic telematics.
Booth of a high school showing the robots they built. (Photo: Alexander DL4NO)
Booth of a high school showing the robots they built. (Photo: Alexander DL4NO)
Thanks so much for sharing your notes from Friedrichshafen, Alexander. I look forward to attending one year myself! I’m fascinated with the fact that the bulk of the event is indoors–what an incredible venue.
Any other Post readers attend Ham Radio Friedrichshafen? Please comment!
We will be hosting a series of Webinar events centred around the SDRplay RSP and SDRuno. These events will be streamed live, but will also be recorded and hosted on our website for those that are unable to attend.
The first event is scheduled for this Saturday (2nd July) at 16:00 UTC – we will give some background to SDRuno and explain it’s core functionality and what the future holds for its development. It will be fairly informal and interactive, we will try to answer as many questions as we can. We will try to stick to a timeframe of about 45 minutes to 1 hour maximum.
From the Isle of Music:
Our July 5 (July 4 in the Americas on WBCQ) program includes special guest María Felicia Pérez, director of Coro Exaudi, winner of the Choral Music category in Cubadisco 2016. We’ll also play some Popular Dance Music by Dinza y Soneros de la Juventud, nominated in the Popular Dance Music – New Talents category and some of Guilty Pleasure by Alexis Baro, which was nominated in the Jazz category in Cubadisco. Also, some new music by Eliel Lazo and the Cuban Funk Machine and the Pedrito Martínez Group.
Two listening options on shortwave:
WBCQ, 7490 KHz, Tuesdays 0000 UTC (8pm EDT Mondays)
Channel 292, 6070 KHz, Tuesdays 1900 UTC (2100 CEST)
See the NOTES section of our Facebook page for more information.
Many thanks to SWLing Post contributor, Phil Brennan, who writes:
The following piece regarding Radio Australia caught my eye last week. It was authored by Hamish McDonald and appeared in the 18 June 2016 edition of the Saturday Paper.
[McDonald] reports on a variety of foreign policy matters from an Australian perspective:
“Guthrie’s world view
Our mole at the ABC tells us new managing director wants to pull back from the embrace of the Chinese Communist Party’s Publicity Department, as the Ministry of Propaganda is known.
In her first meeting with the board on June 9, Guthrie questioned the value of the ABC’s Chinese language portal, AustraliaPlus.cn, which has been pinged by the ABC’s own watchdogs for pulling awkward content to avoid displeasing the CPC.
We are told she also “forcefully expressed” her interest in the corporation returning to full-blooded international broadcasting, and raised the fact that Radio Australia no longer broadcasts in Mandarin, nor in Tok Pisin, the lingua franca of Papua New Guinea. A return to international TV broadcasting two years after the Abbott government scrapped funding for the ABC’s Australia Network (to please Rupert Murdoch) would not come cheap. Nor would a revival of Radio Australia, once the major arm of Australia’s soft power in the region.”
I also spotted a reference to this meeting of the new ABC MD in a previous issue by another columnist which seems to be outside the paywall. Click here to view.
Many thanks, Phil, for sharing this! As I’ve mentioned before, Radio Australia is a staple source of news for many. I hope Guthrie does, indeed, re-focus on their international content and all forms of delivery.
In July PCJ Radio International will present a special two hour program called From the Radio Netherlands Archives.
The special program will broadcast material from the Radio Netherlands archives that has not been hear since it was originally broadcast. Material will be from 1947 to 1995 and will include some rare material.
Rare material will be from Jerry Cowan, Dody Cowan, Harry van Gelder, Eddie Startz, Tom Meijer and many others. Also included will be rare performances recorded at the wereldomroep of some internationally known artists.
The program will be presented by Paulette MacQuarrie; producer, editing will be Keith Perron who will also do the prologue.
This will be the first of a number of specials. Listeners who write in will also get a special e-QSL.
North America: 0100 to 0300UTC – Frequency 7570kHz July 18, 2016
I’m curious: any Post readers use the new Icom IC-7300 on Field Day?
While I gave Icom’s new transceiver a very positive review, it was based on operation at my home QTH. There were no significant contests in progress during my review window.
Field Day has, arguably, some of the toughest receiver conditions out there. If a transceiver/receiver performs well during Field Day’s dense signal environment, without overloading or distorting, it’s a good receiver.
I’m very curious if anyone tested the IC-7300. I assume someone took it out to play on Field Day!
On Tuesday, 21 June 2016, the BBC World Service officially transmitted the 2016 BBC Antarctic Midwinter Broadcast–an international radio broadcast intended for a small group of scientists, technicians, and support staff who work for the British Antarctic Survey.
This is one of my favorite annual broadcasts, and I endeavor to listen every year. Once again, the SWLing Post called upon readers to make a short recording of the broadcast from their locale.
Below are the entries, roughly organized by continent and country/region, including reader’s photos if provided. I had planned to post these recordings by Sunday, but my travels interfered and I discovered an additional ten recordings in my inbox! (If I’ve somehow missed including your entry, please contact me; I’ll amend this post.)
So, without further ado….
The 2016 BBC Antarctic Midwinter Broadcast Recordings
Paul’s Icom IC-7300 tuned to the BBC Midwinter broadcast.
SWL: Paul Philbrook Location: Adelaide, South Australia Notes: Here are a couple of recordings from this mornings broadcast. Just had a quick listen before heading off to work and recorded these two with the IC-7300. Radio: Icom IC-7300 Aerial: Multi-band loaded dipole. 5985 Khz strength 5 readable, 6035 Khz strength 8 good readability, 7360 Khz no copy.
SWL: Bryan Clark Location: Mangawhai, New Zealand Notes: Listening in New Zealand, reception was not as good as last year.
Here are short audio files of the 3 frequencies. I used an EWE antenna aimed southeast, that is across South America, for the best signals. Receiver is a WinRadio Excalibur Pro SDR.
SWL: Christoph Ratzer Location: Salzburg, Austria Notes: Here my complete recording for you. Received at my remote station http://remotedx.wordpress.com in Salzburg, WinRadio G33 Excalibur PRO, Delta loop antenna with Bonito ML052 amplifier.
SWL: Philippe Location: L’Hôpital-Camfrout, France (few km south of Brest) Notes: Very good conditions here, good sound. Equipment: Yaesu FT817ND + V inverted antenna and Yaesu Vx7r + original antenna (little stick on the radio). On both radios, reception: 59 / 59+
SWL: Renato Feuli (IK0OZK) Location: Valentano, Italy Notes: Woofferton at 5.895 Khz AM
Time UTC 21.33
Signal Report R/S R5 S 9+15 Db Very Good signal and audio
RTX JRC 245 and Windom antenna
To Ascension at 7.360 Khz AM
Time UTC 21.33
Signal Report R/S R5 S 9+10 Db Very Good Signal and audio
Receiver JRC NRD 545 Dsp and Long-Wire antenna
SWL: Joseph Location: Ponza island, Italy Notes: I am Joseph in Ponza island, Italy, with pleasure I send you a video of the Antarctic Midwinter 2016 recorded yesterday night with my old smartphone … great about the 5985 and 7360 frequencies, very poor reception on 6035, I used the 3 receivers Yaesu vr5000 connected on a discone antenna “Midland full band”, AOR ar 3030 and Kenwood R1000 on antenna “Mini Whip”.
SWL: Davide Borroni Location: Saronno, Italy Notes: 21 June 2016 at 2130-2200 UTC on 7360 KHZ AM. I listened to the BBC broadcast with SINPO 54444. I listened to beautiful music and talk. Thanks for show ! I used my R&S ESH3 (see above) with my magnetic loop 2 meter diameter antenna.
SWL: Chris Inwood Location: Conrwall, England Notes: [R]ecorded on 5.985 MHz. This frequency was by far the best quality. I was able to copy 7.365 here but there was slight QSB and some interference from an adjacent broadcaster HCJB. 6.035 was not heard at all neither was 9.720 MHz. Very best wishes and thanks, I always look forward to my email.
SWL: Mark Hirst Location: Basingstoke, Hampshire Notes: Thanks for alerting shortwave listeners to the British Antarctic Survey broadcast. It felt very poignant listening to a broadcast aimed at such a small number of people, with the voices of their loved ones being launched around the world.
I was able to record the broadcast from only 100 miles away from the Woofferton transmitter, so needless to say the quality and strength was very good. I imagine hearing that broadcast buried in the noise from far away with those happy birthday songs and best wishes must have been very emotional for its intended audience.
My recording location was Basingstoke, Hampshire in the UK – locator IO91LH 20HH
[Note that Mark also recorded the full 30 minute broadcast which you can download by clicking here.]
SWL: Dean Allison Location: Bedlington, Northumberland, England Notes: I have attached an audio file of the BBC transmission to Antarctica. My location is Bedlington, Northumberland, England, about 100 feet above sea level, using a Kenwood R5000 receiver and a 30 feet longwire antenna about 12 feet off the ground. This was the 5985 kHz transmission.
SWL: Jerry Rhys Location: Surrey, England Notes: Attached are two recordings of today’s BBC Antarctic Broadcast made between
2130 and 2150z. The first recording was made using AM mode with 8 kHz bandwidth on 5985 then 7360, followed by 6035. The second recording was made using SAM mode with 10 kHz bandwidth on 7360, 6035, and 5985.
The best signal was on 5985, 7360 was weak but readable, on 6035 I could detect a carrier and occasional modulation – on this frequency there was also interference from a digital transmission on 6037. Nothing heard on 9720.
I was using a RF Space SDR-IQ Receiver, and a Wellbrook ALA1530S Loop
Antenna installed in my loft. Many thanks for the SWLing Post, always an enjoyable read!
SWL: Alan (G4TMV) Location: northern England Notes: Reception of this special broadcast was excellent here in northern England on 5985 kHz. It was an enjoyable broadcast again, but Babcock weren’t wasting any electricity on it, it came on and went off again almost spot on 2130 and 2200!
SWL: Lawrence Beedle Location: Manchester, England Notes: Here is my recording of the mid winter broadcast by the BBC 21st June 2016. Tecsun PL660 telescopic aerial, indoors, sat at kitchen table in a house in Manchester, England, UK. 5985khz good reception. 6035 kHz not as strong, 7360 kHz no reception. Recorded on iPhone next to speaker on radio. 36 seconds.
SWL: David Mappin Location: Filey, England Notes: Just thought I would let you know how I got on with the BBC WS broadcast to Antarctica. I used my Icom IC-R75 receiver and a Wellbrook ALA1530 inside the house. 5985 kHz was very strong with me here on the east coast of the UK (NVIS propagation?). Nothing heard on 6035 or 9720 but a weak signal on 7360. Attached (above) is a photograph of my listening post. This is a link to a YouTube video of the start of the broadcast. My very best regards and thank you for your excellent website.
A screenshot from Cap’s Elad FDM-S1 SDR.
SWL: Cap Location: N.W. Scotland Notes: Here is my attempt last night with SDR screenshot attached, Elad FDM-S1 with homebrew mini Mag Loop (<250mm dia) sitting on my bookcase. No doubt there will be better signals/recordings than mine as the signal was really strong from WOF and considering my setup is 100% indoors, it came out ok. External antennas don’t last here as I am by the sea and regular 100mph+ storms in the winter is too much hassle.
SWL: Richard Langley Location: New Brunswick Notes: Tecsun PL-880 receiver with a Tecsun AN-03L 7-metre wire antenna in AM mode with 5.0 kHz RF filtering at the back of my yard. The photo [of Richard’s outdoor portable listening post] was taken during some other recordings last year.
Click here to listen to Richard’s recording, or simply use the embedded player below:
SWL: Thomas Witherspoon Location: Saint-Anne-de-Beaupré, Québec Notes: I traveled to an RFI quite spot in the parking lot of the Basilica in St.-Anne-de-Beaupré, Québec. Click here to read a full post about my set-up and conditions. Note that I used a Sony ICF-SW55 receiver (above), perched on top of my vehicle and tuned to 7360 kHz.
SWL: Dan Hawkins Location: Davis, California Notes:Here is my YouTube video. I’m using both the Sangean and Hammarlund receivers to hunt down the BBC Midwinter Antarctic Broadcast. Probably a somewhat different result than on most of the videos, but probably typical of West Coast propagation at these frequencies and times.
SWL: Nace Magner Location: Bowling Green, Kentucky Notes: Please find attached a video of my reception of the BBC broadcast. Unfortunately, a thunderstorm passed through about 10 minutes prior to the video and the audio is dominated by lightning-related crashes. However, the BBC signal can be heard periodically. My location was on a university campus in Bowling Green, Kentucky, which is about 50 miles north of Nashville, Tennessee. I received the signal using a Tecsun PL-660 and its whip antenna. I enjoy the SWLing site. Best regards, Nace Magner (KW4LY)
Once again, many thanks to all of you who submitted your recordings of the BBC Midwinter Broadcast! We’ll be sharing this post with both the British Antarctic Survey and the BBC World Service. And to all of you, from the SWLing Post: Happy Midwinter! Happy Summer/Winter Solstice!
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