Category Archives: What’s On Shortwave

Travelling and DXing with the Bonito MegActive MA305 antenna

 

Ok, so officially it wasn’t a DXpedition; it was a well needed vacation in the sun after several hectic months of work, some of which involved travel to slightly more exotic locations. However, these days, I view any travel, whether it be for business or pleasure as a ‘DXpedition’ opportunity! Some of you might remember that I purchased a Bonito Boni Whip at the beginning of 2017 because (a) I needed another antenna and (b) a second Wellbrook loop felt like too much of an extravagance. They’re excellent antennas for sure, but at around £300, I couldn’t justify buying another. Thus, for about a third of the price I bought the Boni Whip. It proved to be an excellent choice – very compact and so perfect for my regular DXpeditions, quick to set up and capable of really excellent DX. There are many videos on the Oxford Shortwave Log YouTube channel that are testament to this. I wrote a couple of articles, published here on the SWLing Post which were seen by Dennis Walter of Bonito, who subsequently contacted me and offered to send over their MegActive MA305 E-field antenna for testing. Dennis made it crystal-clear that I was to ‘do my own thing’…test the antenna in any way I saw fit and publish my findings so DXers/radio enthusiasts could learn more about the capabilities of the antenna – from another DXer. I was happy to agree to this arrangement and the MegActive MA305 duly arrived, complete with two lengths of (bayonet BNC terminated) high quality H-155 coaxial cable.

 My portable Dxing kit with MA305 antenna                 The MA305 power inserter and USB power ‘brick’

The specifications of the MegActive MA305 are very similar to the Boni Whip; they both offer a Gain of +3 dBs, second and third order intercept points of greater than +30 and +50 dB respectively and both tune to 300 MHz. The MA305 is supplied with a longer radiating element and tunes down to 9 KHz (versus the 20 kHz lower limit for the Boni Whip). Obviously this isn’t a specification that is going to concern most radio enthusiasts; both offer fantastically wide operating bandwidths. The way in which these antennas do differ quite significantly however, is in how they are powered. The Boni Whip operates from 12 to 15 V, whilst the MA305 operates from 5 to 15 V. Bonito’s design philosophy regarding this feature is based on the increasing difficulty in procuring reasonably priced analogue external plug-in power supplies (they are no longer allowed to be produced due to power consumption restrictions).

Interestingly, when the power supply for my Wellbrook ALA1530 packed up, I called them to purchase a replacement and was told they only have limited stocks remaining. Thus, a solution for powering active antennas with a suitable low-noise supply is an issue that needs resolving. The guys at Bonito figured a USB power source was suitably quiet and with USB ‘power bricks’ almost ubiquitous these days for charging mobile phones and other portable electronic devices on-the-go, the idea could be applied to their active antennas. The result is the MegActive MA305, designed to operate at 5 Volts with no loss of performance. As a DXer who probably spends more time listening on DXpeditions than I do in my shack at home, the USB power solution was perfect. I myself often carry a cheap Chromebook laptop to use as an additional power source for my camera phone when I’m DXing, so Bonito’s design approach resonated with me completely.

 

Travelling with the MegActive MA305

Ok, so the MA305 is very compact and very light indeed – perfect for a trip to Crete! However, I know from many conversations with my YouTube friends and followers that some of us feel a slight sense of trepidation carrying shortwave radios and antenna systems on board flights, be they national or international. I myself wasn’t really concerned other than if my bag got pulled from the X-ray machine, there’s often quite a long wait whilst the security staff work through the queue of luggage requiring er…human intervention! Predictably, my rucksack did get pulled and I waited patiently until it was my turn to explain the contents! Looking back on this retrospectively, it’s hardly surprising. Other than the usual holiday paraphernalia, my rucksack contained:

  • A 10.0 metre length of H-155 coaxial cable
  • A 1.0 metre length of H-155 coaxial cable
  • Eton Satellit receiver
  • MA305 Coaxial Power Inserter
  • MA305 Antenna Amplifier
  • Bonito USB ‘Power Brick’
  • Bonito USB Power Cable
  • NooElec RTL-SDR dongle
  • NooElect ‘Ham It Up’ upconverter
  • Various screened cables and connectors
  • 10 metres of equipment wire

I explained to the (friendly) security chap that I was a shortwave radio hobbyist and identified the various pieces of equipment for him, as he removed them from my rucksack. He confirmed my X-ray had ‘lit up’ (in blue as it happens) with metallic/electronic items and was even kind enough to swivel his monitor to show me the mess of items strewn across the screen – just as I had thrown them all into my rucksack! However, after quickly swabbing some of the items, he said all was fine and hoped that I enjoyed my holiday and listening. Service with a smile at Gatwick Airport – and I was on my way. My outbound experience got me thinking whether it would be possible to pack my DXing kit in such a way that it wouldn’t alarm airport security. Thus, for the trip home, I packed all of my cables into my (checked-in) suitcase. I figured it would be obvious there was no security risk associated with cables alone. I then packed my RTL-SDR, upconverter and all of the MS305 components very neatly into a single box and put that in my carry-on rucksack. Now, some might argue that security measures at Heraklion International Airport in Crete differ a little from London Gatwick, but I observed staff at the X-ray machine very carefully monitoring every piece of luggage passing through it – including my own and I passed straight through without a problem. All I did was take my laptop out as usual, and put it in a separate tray. Job done.

DXing with the MegActive MA305

                                      My listening post in Crete, with the brilliant Eton Satellit receiver

My apartment in Crete was on the second floor and a large balcony provided a decent outdoor location for DXing. As regards electrical noise, the location was much quieter than my shack at home, but it certainly wasn’t perfect, thus a good test of the MA305 in a real-world pseudo-urban environment. in an attempt to improve SNR, I bought a cheap ‘Selfie Stick’ and some tape and managed to construct a mount for the amplifier, increasing the overall height above ground by about 1.5 metres and displacing the radiating element an additional 2 metres thereabouts from the building. I’m not sure whether it made much difference, but it seemed like the sensible thing to do for less than 10 Euros.

During my week-long stay, I managed to fit in several listening sessions and copied some really excellent DX from this ultra-compact, USB-powered set up. In fact, the MA305 coupled to the Eton Satellit performed so well, I managed to copy a number of personal firsts, including CRI on 7295 kHz, via their relay in Bamako, Mali, The Voice of Beibu Radio on 5050 kHz, Nanning, XSL ‘Slot Machine’ on 6251 kHz USB, Ichihara, Japan, S32 ‘The Squeaky Wheel’ on 3828 kHz and NHK World Radio Japan, 11910 kHz. I also copied RTM Wai/Limbang FM on 11665 kHz from Kajang, Myanmar Radio on 5985 kHz and AIR Bhopal on 4810 kHz, amongst others – all of which I would certainly consider to be difficult catches in Europe. To hear them with an 18 cm antenna felt pretty special. African shortwave stations were also very well represented and I managed to copy a number of them including Radio Hargeysa on 7120 kHz, Voice of Tigray Revolution on 59150 kHz, Radio Oromiya on 6030 kHz, Radio Fana on 6110 kHz, Radio Ethiopia on 7235 kHz, Radio Sonder Grense on 3320 kHz and Radio Guinée on 9650 kHz. I expected to hear all of these stations, except for Radio Guinée, which is farther away from Crete than the UK. So, all-in-all an excellent result.

Despite hearing a lot of excellent DX whilst in Crete, there is one signal I copied, which more than any other, demonstrates the DXing credentials of the MA305 – and Eton Satellit for that matter. In the early hours of the morning (00:59 hrs UTC) I copied and recorded Radio Tarma from Peru on 4775 kHz. With a TX power of 1 kW, this is a very difficult station to hear in Western Europe, even with a longwire. To catch this station in Crete, at all, was incredible on an ultra-compact set-up. It was at this point during the trip that I realised E-field antennas really do work superbly well for hard-core DXers on the move. It inspired me to conduct further tests back home in the Oxfordshire countryside, where electrical noise is absent. This I did a few days ago, with some quite amazing results on the Tropical Band. More on that to come in my next post. In the meantime, please find text links and embedded videos for selected reception recordings, below. Many more recordings are available on the Oxford Shortwave Log YouTube channel and please don’t hesitate to contact me if you require further information on the MA305 or the Eton Satellit. Thanks for reading/watching/listening and I wish you all excellent DX.


Personal firsts

Click here to view on Oxford Shortwave Log

 

Click here to view on Oxford Shortwave Log

 

Click here to view on Oxford Shortwave Log

 

Click here to view on Oxford Shortwave Log

 

Click here to view on Oxford Shortwave Log

 

Radio Tarma, Peru, 4775 kHz

Click here to view on Oxford Shortwave Log

 

Other notable catches

Click here to watch on Oxford Shortwave Log

Click here to watch on Oxford Shortwave Log

Click here to watch on Oxford Shortwave Log

Click here to watch on Oxford Shortwave Log

 

Clint Gouveia is the author of this post and a regular contributor to the SWLing Post. Clint actively publishes videos of his shortwave radio excursions on his YouTube channel: Oxford Shortwave Log. Clint is based in Oxfordshire, England.

Potomac Valley Radio Club (PVRC) and the US Naval Academy Radio Club to operate NSS special event May 13

Photo: US Coast Guard

Many thanks to SWLing Post contributor, Brian D. Smith, who writes:

Longtime SWLs will recall the repeating CW messages of Coast Guard station NSS and its distinctive “DAH-dit di-di-dit di-di-dit” ID.

There’s even a nostalgia page created in its honor: http://hawkins.pair.com/nss.shtml – along with a Wikipedia entry: https://en.wikipedia.org/wiki/NSS_Annapolis – and an online history: http://www.globalsecurity.org/military/facility/greenbury-point.htm – among other online references.

Unfortunately, like most other such CW stations of its day, NSS is gone forever … right? Wrong! Get this: NSS will return from the dead during Armed Forces Day crossband tests on May 13!

Here’s what the ARRL is reporting:

“The Potomac Valley Radio Club (PVRC) and the US Naval Academy Radio Club will operate NSS on the site of the 1918 Naval Radio Transmitting Station on Greenbury Point in Annapolis, Maryland, across the Severn River from the US Naval Academy.”

How cool is that?
http://www.arrl.org/news/armed-forces-day-crossband-military-amateur-radio-communications-test-is-may-13

So both hams and SWLs can obtain a QSL card from this ghost of a station. Personally, I’m thrilled with the news, because I was never able to get a QSL card from NSS or any similar station during my teenage years.

As far as I know, this is the first time NSS has been heard since … what, 1999? It certainly wasn’t on the air during last year’s Armed Forces Day radio event.

Wow–thank you for the tip, Brian! I, too, would love to snag an NSS QSL card!

W9IMS special event stations, May 7-13

Many thanks to SWLing Post contributor, Brian D. Smith, who writes:

My radio club is about to begin another year of W9IMS special events commemorating the 3 major auto races at the Indianapolis Motor Speedway: the Grand Prix of Indianapolis, the Indianapolis 500 and the Brickyard 400.

We’re among the most popular annual special event operations in the United States (along with the Original 13 Colonies and Route 66). Our first special event (for the Grand Prix) will run from May 7-13; for more complete info, go to www.w9ims.org

As you probably recall, we offer 3 new and colorful QSL cards every year, as well as a nice certificate for stations that work all 3 special events in a given year.

Naturally, the offer extends to SWLs as well … so paper chasers, take note! And here’s a tip for locating us when we’re on the air: Keep an eye on DX Summit — http://www.dxsummit.fi/#/ – which will feature constantly updated DX spots for W9IMS during our weeks of operation.

Excellent–thanks for sharing this, Brian. It’s great to know that this event will also issue QSLs for SWL reports!

Jazz from the Left on two more frequencies

Many thanks to Raoul van Hall, producer of Jazz from the Left, who shares the following news:

WRMI is adding two more weekly frequencies for Jazz from the Left starting this week on 9395 kHz at 0000 UTC Saturday. For the moment, they are simulcasting the 0000 UTC hour on 9455 kHz, so the program would be on both frequencies.

So that’s a total of four weekly broadcasts on four different frequencies. Thought you and your readers would find that interesting.

Comments can be sent to: jazzfromtheleft@gmail.com

Great news, Raoul!

Western Australia: New low-power shortwave broadcaster seeking listener reports

Many thank to SWLing Post reader, Stefano Mollo–a licensed Australian broadcaster–who shares the following news:

Hi, Thomas,

I have started test transmissions from Perth, Western Australia, on 5,045 kHz, at 75 watts (300 PEP).

Stefano’s HF transmitter

For the time being, I am using the same audio of my other station–77.4 MHz FM–which you can also find and stream online here: www.77400.fm

My test transmission are on the air from about 7:00 pm to about 10:00 pm every evening, local Perth WA time (11:00 – 14:00 UTC).

Please direct listener reports and any enquiries to 77400fm@gmail.com.

Thank you for sharing your news, Stefano!

Post readers: While 300 watts PEP is a modest broadcast signal, no doubt many in Australia, Oceania and Asia will be able to log Stefano’s station when conditions are favorable. During band openings, his signal might travel quite a distance.

Let’s help Stefano by contacting him with detailed listener reports!