Yearly Archives: 2016

Alan seeks help modifying the NewLog logging application

SWLing Post reader, Alan Lever, writes:

“Although not new, NewLog is excellent for all breeds of radio listener.

It has separate opening screens for Amateur, SWL, Broadcast etc. all fully adaptable as to layout, renaming boxes etc.

The developer, Tom Lackamp (AB9B), gives full permission to alter and further develop it. I’ve had no success contacting him.

To make this program perfect, can anyone tell me how to set up drop boxes in the various set boxes. I have no idea how to do this myself so would appreciate any help, please.

Readers: Please comment if you can help Alan modify NewLog or if you have current contact information for the developer, Tom Lackamp (AB9B). Thanks!

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Recordings: Paul records Vanuatu and Solomon Islands from central Alaska

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Many thanks to SWLing Post contributor, Paul Walker, who shares the following recordings of Radio Vanuatu and the Solomon Islands Broadcasting. Paul lives in Galena, Alaska, and records most of these broadcasts outside of his broadcasting studio:

7260 kHz:

https://www.youtube.com/watch?v=yAxa5_Oyl3M

5020 kHz:

https://www.youtube.com/watch?v=e9yw6GLy4Zw

5020 kHz:

https://www.youtube.com/watch?v=C9Rd-Whn2pA

3945 is much weaker then 7260 for some reason and Nikkei is on that channel till 0900 UTC, so about the only chance I have of hearing Vanuatu on 3945 CLEARLY is when Nikkei signs off.

9545 kHz Monday Night 1130 AKDT/(0730 utc Tuesday)

https://soundcloud.com/paul-walker-11/9545-april-25-2016-11-21-37-pm

7260 from April 19th at 1135 AKDT /0735 UTC)

http://youtu.be/yAxa5_Oyl3M

5020 from April 20th at 1248 am AKDT/0848 UTC

http://youtu.be/e9yw6GLy4Zw

Thanks for sharing your recordings, Paul! You’ve certainly done a fine job DXing in the northern latitudes all while standing next to a broadcast station.

Keep up the great work!

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Daniel’s Radio Havana Cuba QSL card from August 15, 2015

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Front of RHC QSL card (click to enlarge).

Many thanks to SWLing Post contributor, Daniel Amoroso, who shares this QSL card and notes:

Hello Thomas,

Attached is QSL # 1 from Radio Habana Cuba for their shortwave broadcast on 8- 15-2015

This was the day the US Embassy in Cuba was officially re-opened.

Back of RHC QSL card (click to enlarge).

Card was received on April 18 , 2016.

Very cool! Thank you for sharing this card and noting that relevant bit of history, Daniel.

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Curating a list of endangered shortwave stations

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That’s my minivan parked in front of the RCI Sackville transmitting station in June, 2012. The site was closed by the end of 2012 and towers demolished shortly thereafter.

Recently, my friend and fellow archivist, London Shortwave, and I engaged in a discussion about creating a curated list of “endangered” shortwave radio stations.

The idea being we could use such a list to focus our efforts and those of the archiving community on recording broadcasters that were most likely to disappear in the near future.

London Shortwave published an excellent post about this on his blog.

Please click here to read his post.

We quickly put this page on the Shortwave Radio Audio Archive as a starting point.

We need your help to curate this list!

Please comment either on London Shortwave’s blog, or on this post, and suggest any additional broadcasters we may have missed. Please include a link to news item(s) which may indicate the broadcaster faces closure.

Of course, this list and the categories are subjective–we’re simply using our best judgement in this process. Often, broadcasters can shut down with little or no notice.

Thanks in advance for your help!

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World’s first pirate broadcast on Easter 1916 to be celebrated

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(Source: Silicon Republic via Andrea Borgnino)

At an event in Trinity College Dublin (TCD) tonight (25 April), the centenary of the broadcasting of the Proclamation of an Irish Republic via shortwave radio in 1916 – considered by many to be the first pirate radio broadcast – will be marked.

While the men and women who took part in Easter 1916 were camped out in the GPO and other locations around Dublin, one group involved with the rebellion, led by Joseph Mary Plunkett, wanted to use the latest technology to spread the message of Irish revolt.

Having commandeered the Irish School of Wireless Telegraphy at the corner of O’Connell Street and Abbey Street – where the Grand Central Bar now sits – the group set up a ship’s wireless systems to broadcast a shortwave radio transmission, with the hope that a passing ship near the country would pick it up and report back to the US.

With Plunkett at the controls, the radio enthusiast issued a burst of Morse code that read: “Irish Republic declared in Dublin today. Irish troops have captured city and are in full possession. Enemy cannot move in city. The whole country rising.”

With some reports suggesting the broadcast was picked up as far away as Germany and Bulgaria, it is widely considered one of the first pirate radio broadcasts as, until then, point-to-point transmissions was the most common form of sending messages wirelessly.[…]

Continue reading the full article at Silicon Republic online…

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Off-Grid Radio: Portable power recommendations?

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This year, I have a lot of portable radio play in mind as I travel across the continent. At some point, I even plan to spend several days in an off-grid cabin on the coast.

In the past, I’ve powered my 12 VDC ham radio transceivers with a system comprised of three PowerFilm solar 5 watt foldable PV panels (see below), a Micro M+ charge controller and several gel cell type sealed batteries (a couple 7 Ah and one 20 Ah).

The system works well, but the batteries are a little heavy and unhandy when I want to hike into a remote site or play radio on the beach, for example.

In terms of receivers, my portables (like the Sony ICF-SW7600GR, Tecsun PL-660, etc.) simply use AA batteries which I charge with PowerFilm AA PV chargers (see above). My CommRadio CR-1a has an internal battery that will power it for hours at a time.

Power is much less of an issue with receivers because they’re quite resource efficient.

I mainly need a system to power my QRP ham radio gear, and that’s where I could use your experience!

Wish list

Charge controller

I need a new charge controller since my Micro M+ (no longer produced) is now being used to power a remote antenna tuner.

Of course, I’ll need an inexpensive charge controller that doesn’t produce RFI (radio interference).

It would be an added bonus if the charge controller could also charge my batteries when grid power is available.

12 VDC Battery packs

I’d like something relatively lightweight and safe.

Note: LiPo packs worry me, especially since I had one (an early GoalZero model) quite literally melt down and burn up on my bed only a few hours after bringing it back from an eight hour flight a few years ago. Scary!

Pure Sine Wave Inverter

I’d also like a small, efficient pure sine wave inverter that I I could connect to my largest battery and power my laptop for extended SDR spectrum recording sessions while off-grid.

I’d love a recommendation from someone who uses one and can confirm a model that doesn’t create radio interference while operating.

Recommendations?

Post readers: Please comment with your recommendations and include model numbers and links if possible. Thank you in advance!

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The Icom IC-7300 vs. Elecraft KX3: Which do you prefer for CW/SSB?

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[UPDATE: Read the full review of the IC-7300, along with listener survey results, by clicking here.]

Many thanks to all of you who participated in our last survey comparing the new Icom IC-7300 with the WinRadio Excalibur SDR. We had over 100 responses (!!!)–the results will be posted in the forthcoming IC-7300 review.

Before completing my review, I thought I might fit in one more quick comparison–this time, comparing the Icom IC-7300 to my Elecraft KX3 and focusing on SSB and CW reception.

Recording notes and disclaimers

The Icom IC-7300 offers native digital audio recording, which means that it records both transmitted and received audio to an inserted SD card.

The Elecraft KX3 does not have a built-in recorder (indeed, most transceivers do not) thus I made in-line recordings using my Zoom H2N digital recorder.

I did no post-processing of the audio other than converting .wav files to .mp3.

Both receivers shared my large outdoor omni-directional horizontal delta loop antenna for each test.

The Elad ASA15 Antenna Splitter Amplifier

To keep the comparison on as equal footing as possible, the receivers shared the same antenna through my Elad ASA15 antenna splitter amplifier. Though the ASA15 has both 12dB amplification and –15dB attenuation, I employed neither.

The ASA15 allowed me to make the following recordings simultaneously.

In each case, I tried to set up both radios using the same filter widths, AGC settings, and (as much as possible), audio level. I didn’t engage a noise-reduction feature on either rig.

I also didn’t employ any type of audio equalization on either rig–still, you’ll note that one radio produces a more “flat” response than the other.

Please vote!

At the end of this post, I have an embedded a survey in which you can vote for the sample recordings you like best. Each recording is clearly labeled to denote that it’s either from “Radio A” or “Radio B” (chosen at random).

And now…here are the recordings:

Audio Clip 1: CW (20 meter band)

Radio A