Yearly Archives: 2018

CATSync: A new tool to control WebSDRs with your tabletop radio

Introducing CATSync – The new CAT tool for WebSDRs

Oscar, DJ0MY, has developed a new software tool for radio amateurs and SWLs.

CATSync allows the user to control public WebSDR receivers with a real rig connected via CAT. It supports the classical Web-SDR servers as well as the newer Kiwi SDR servers publically available on the internet.

This gives you access to dozens of web based receivers with the comfort of tuning your rig at home. This software helps you to bring you back into the fun of ham radio when you are suffering from local temporary or permanent high noise levels in an urban QTH location.

The software has the following features:

Synchronizes any public WebSDR server with your real RIG…

Supports a wide number of RIG’s (it uses the popular OmniRig engine)

Supports WebSDR and KiwiSDR browser based SDR receivers

Tune the VFO of your radio and see the web SDR follow in real time !

Switch modes (SSB, CW, etc.) on your radio and see the web SDR switch mode in real time.

Listen to the same frequency as your rig via web SDR

Ideally suited e.g. for people suffering from local QRM

Can track RX or TX VFO (e.g. to find that split of a DX station) if radio CAT supports both simultaneously

Can be interfaced with popular logging software using OminRig or via VSPE port splitter

For more information visit the author’s website: https://catsyncsdr.wordpress.com/

See a YouTube video of CATSync under: https://www.youtube.com/watch?v=UbSHfkjhx0c

Click here to read the full article on the Southgate ARC.

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An initial look at the C. Crane CCRadio-EP Pro

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Earlier this week, I took delivery of the latest radio from C. Crane: the CCRadio-EP Pro. C. Crane sent me an early production model for evaluation.

Since posting an announcement last November, several SWLing Post readers have contacted me and asked if I would take a look at this next iteration of the venerable CCRadio-EP.

Yesterday, I started a proper evaluation of the EP Pro by taking it to a park where I compared it with my trusty Tecsun PL-660 on AM/mediumwave.

First impressions are favorable in terms of sensitivity, stability and audio, but with a number of caveats.

The Silicon Labs SI4734 diagram

The EP Pro is not a true analog set like its predecessor–it’s based on the Silicon LabsSI4734 DSP chip.

In other words, much like the Degen DE321, the Degen DE32, the Tecsun R-2010D, the Kchibo KK9803 and the ShouYu SY-X5 (which I review in a shoot-out here), the CC-Radio EP Pro is a mechanically-tuned DSP receiver.

On the plus side, the new EP Pro will not drift like its analog ancestor (a common complaint from EP owners).

But truth be told, I’m not the biggest fan of mechanically-tuned DSP radios. Why? For one thing, it’s nearly impossible to eliminate muting between 10 kHz frequency steps on the AM band. Note here that the EP Pro is fixed at 10 kHz steps, though C. Crane tell me a future production run will have a 9/10 kHz step toggle.

Additionally, the EP Pro produces false peaks/images on either side of a strong AM or FM signal. In fact, C. Crane includes the following informational insert with the EP Pro:

This is going to be a quirky radio.

The tuning mechanism is…well…unusual…and takes some getting used to. I’ve also discovered that the top half of the AM dial is inaccurate. Here’s the EP Pro centered on WTZQ at 1600 kHz:

I estimate that the slide rule dial is off by about 40-50 kHz at the top end of the band. It’s much more accurate below 1,200 kHz, however. I plan to hook the EP Pro up to a signal generator and note the results in my forthcoming review.

Speaking of an EP Pro review, I plan to publish it within the next two weeks, so stay tuned!

Follow CCRadio-EP Pro posts by bookmarking this tag: CCRadio-EP Pro

Click here to check out the CCRadio-EP Pro on C. Crane’s website.

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The new Tivoli Model One Digital has AM (for Australians only)

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Many thanks to SWLing Post contributor, Dennis Dura, who shares the following article from The Sydney Morning Herald (my comments follow):

Australians like AM radio, but it’s just about impossible to find a good quality digital radio with AM. Lots of digitals get FM, so why no AM?

It’s because Australia is an unusual market for radios. We’re not like Asia, Europe, Japan and America where practically all radios are designed and manufactured. These places have large populations in high densities, and one population hub is seldom far from the next. The range limitations of both digital and FM are seldom an issue.

But in Australia we have digital broadcasting only in the capital cities, meaning Brisbane’s digital radio stations are 900 kilometres from the next nearest in Sydney, leaving about 800 kilometres of dead air between. Digital can’t even hold between Sydney and Canberra. FM lasts a bit longer, not much. But with good old AM you can listen to Darwin from the Nullarbor Plain when the conditions are right. Through vast tracts of Australia if you don’t have AM you don’t have radio.

So Gary Tye’s challenge when he took on distribution of the Tivoli brand was to convince people in Boston that Australians will actively seek out and buy a digital radio with AM. They took a lot of convincing.

And so the $449 Tivoli Model One Digital is now available with AM, as well as FM and digital. But only in Australia. Caravanners around this wide brown land will rejoice; there’s at last a good sounding digital radio that will work anywhere.

[…]The sound quality is, as a very honest department store salesman observed, good but not great. I remember the original as being better. The bass can become ragged down low and the definition gets a bit fuzzy at high volumes, but for filling a study, a kitchen or indeed a caravan with good music the Tivoli does an entirely respectable job. It’s not on a par with a Wave Radio but it costs half as much and sounds better than the vast bulk of radios, be they digital or analogue. And it has AM.

It also has Spotify, Tidal, Deezer and Wi-Fi to get internet radio. There’s Bluetooth and you can hook in your phone or music player with a cable to the 3.5 mm auxiliary input.

Click here to read the full article at The Sydney Morning Herald.

Thanks for the tip, Dennis!

I owned the original Tivoli Model One and loved it. I recently gave it away while thinning the herd here at SWLing Post HQ. Though it was an elegant, simple radio with excellent audio characteristics, so is my Como Audio Solo which essentially replaced the Model One.

While the Model One Digital is appealing in many respects, reviews are lukewarm at best. Customers complain about the proprietary app, the audio being too heavy on processed bass and the overall performance not matching that of its predecessor.

While the Model One Digital is a “WiFi” radio, it doesn’t seem to connect to any of the streaming radio station aggregators we radio enthusiasts rely on to tune to our favorite obscure local stations on the other side of the planet. It appears to only connect to paid music streaming services and one’s own local digital library (though please correct me if I’m wrong about this!).

Post readers: Any Tivoli Model One Digital owners out there? I’d love to read your reviews!

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China consolidates three national networks to form the Voice of China

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China Radio International will become a part of the new Voice of China.

(Source: CNN Money via Cap Tux)

Beijing has a new propaganda weapon: Voice of China

China is creating a new giant broadcaster to ensure its voice is heard loud and clear around the world.

Voice of China, as the new outlet will be known internationally, will be formed by combining three mammoth state-run national networks: China Central Television (CCTV), China National Radio and China Radio International. It will employ more than 14,000 people.

The merger was revealed in a Communist Party document on a sprawling government reorganization program, championed by President Xi Jinping to reinforce the party’s absolute control in all aspects of state governance.

State news agency Xinhua released the document Wednesday after it was approved by China’s rubber-stamp parliament.

With echos of the Voice of America radio service created by the US government during World War II, Voice of China is tasked with “propagating the party’s theories, directions, principles and policies” as well as “telling good China stories,” according to the document.

It will be under the direct control of the party’s central propaganda department.

The new broadcast juggernaut is being formed at a time when Chinese authorities face growing challenges to control their message in the age of the internet and social media. They are making strenuous efforts to maintain strict censorship at home while pouring money into propaganda projects abroad.[…]

Click here to read the full article at CCN Money.

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Dave’s review of the AOR AR-DV1 Digital Voice Receiver

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Many thanks to SWLing Post contributor, Dave Zantow (N9EWO), who has recently posted his review of the AOR AR-DV1 digital voice receiver.

As with many of Dave’s reviews, this evaluation takes a close look at HF and mediumwave performance which isn’t the AR-DV1’s strong suit. Dave notes:

“[Though] not what the receiver was designed for, RF performance on MW / HF bands (and the terrible audio quality) are mediocre at best.”

Click here to read Dave’s review.

Thanks, Dave! Your review reflects comments I’ve received from some Post readers who’ve purchased the AR-DV1 as well. Many were particularly upset with the audio quality. Of course, the AR-DV1 is marketed as a digital voice receiver, thus audio likely favors “narrow” voice audio.

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Ever Ready Model N attache case radio spotted in charity shop

William spots radios in “A Quiet Place”

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Screen shot source: Digital Spy.

Many thanks to SWLing Post contributor, William Lee, who writes:

Upcoming full release of the 2017-2018 film “A quiet place”

https://en.wikipedia.org/wiki/A_Quiet_Place_%28film%29
and
https://www.imdb.com/title/tt6644200/

It has some pictures in a local film-publicity magazine, one of which is Emily Blunt in front of a whole collection of old professional radios.

See some images can be found here.

“So the father’s basically setting up all these different safeguards to keep the family safe. So he set up basically, for all intents and purposes, a war room down in the basement of their house that’s underground. Underground is a lot safer than above ground because you make less noise.

[…]He’s basically, over the years, collected TVs and radios and all these different things that he can try to make contact, try to get information – obviously no volume on any of them. The TVs are actually a security network where he’s put up cameras all over the farm, so he can see where everyone is at all time.”

There are probably more radio pictures elsewhere.

Thanks for sharing, William! Looking through some of the screen shots, I do see at least one transceiver (image at top of page) but I can’t make out the model or manufacturer. I also see a number of scopes. I’m sure there are many more radios in this film!

I’ll add this post to our growing archive of radios in film.

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