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Many thanks to SWLing Post contributor, Pavel Kraus, who shares the following guest post:
Raspberry and internet radio
by Pavel Kraus
Raspberry and Volumio
I recently read an article about a Raspberry microcomputer here and I would like to introduce you to an idea that is easy to implement, not too expensive and does not require special computer knowledge due to the number of detailed instructions on the Internet. With Raspberry and the Volumio free software audiophile system, it is possible to design devices that allow you to play music files from connected or network storage or listen to Internet radio, etc. You can also play music from Spotify using the available plugins.
The system can be controlled by touch from the built-in display, from a mobile phone or tablet or by remote control. There are a huge number of internet radios, you can search them by genre or by country. For example, radio stations in the United States are categorized by state, in each state by city, and we can select individual stations in that city.
There is also the option to download this software and install it on a microSD card. Detailed documentation is available at https://volumio.github.io/docs/, so I will not describe it in detail here, the installation itself is not complicated. I used the following components to make this device: Continue reading →
Radio Waves: Stories Making Waves in the World of Radio
Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers. To that end: Welcome to the SWLing Post’sRadio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!
Many thanks to SWLing Post contributors Paul, Dennis Dura, Dan Van Hoy, Alokesh Gupta, and the Southgate ARC for the following tips:
A barbed wire telephone call didn’t sound great but could quickly warn others about something such as a wildfire.
Historian J. Evetts Haley wrote that, in its time, the old XIT Ranch up in the Texas Panhandle was “probably the largest fenced range in the world.” He recalled that its barbed wire enclosed over 3 million acres of land. At the north end alone, the fence ran for 162 miles. The unique enclosure helped keep in enormous cattle herds, keep out rustlers, and also gave rise to the creative use of a new technology: the telephone.
I’ll come back to the XIT in a moment, but first, consider these smattering of reports from that era. In 1897, The Electrical Review, reported that “on a ranch in California, telephone communication had been established between the various camps . . . by means of barbed wire fences.” The article says the novel use of the phone was a great success and was being used in Texas as well. That same year, the New England Journal of Agriculture was impressed that two Kansas farmers, living a mile apart, had attached fine telephone instruments to the barbed wire fence that connects their places and established easy communication. From the Butte Intermountain in 1902 we see this notice: “Fort Benton’s latest development is a barbed wire telephone communication.” The article points out that people of the range were not all that happy with barbed wire, which they thought was an “evil” that had arrived with the railroad, but they had decided to look at the practical side of its existence and use it to create a telephone exchange that would connect all the ranches to Fort Benton. [Continue reading…]
Schwab Multimedia has lost an appeal to the Federal Communications Commission in a case involving a planned AM station near Los Angeles for which it had a construction permit.
This is a “tolling” case, one that involves the FCC construction clock. The history is complex — the FCC’s summary is 2,500 words long, not counting many extended footnotes — but the upshot is that KWIF in Culver City was never built and, barring further developments, apparently will not be. Its call sign has now been deleted.
Levine/Schwab Partnership, which does business as Schwab Multimedia, had applied in 2004 to build a new AM station in the Los Angeles area. It eventually secured a CP in 2016 for the station at 1500 kHz. [Continue reading at Radio World…]
Dick Smith, VK2DIK has lived an adventurous and extraordinary life. He is a proud Australian, businessman, adventurer, entrepreneur and he single handedly changed electronics and CB/Amateur Radio in Australia.
Dick has recently released his autobiography titled, Dick Smith: My Adventurous Life and tonight we’re privileged to sit down live with Dick, speaking to him about his adventures, including the first solo helicopter flight around the world, his business ventures and being a pioneer for Amateur and CB radio.
Radio Waves: Stories Making Waves in the World of Radio
Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers. To that end: Welcome to the SWLing Post’sRadio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!
Many thanks to SWLing Post contributors Dan Srebnick, the Southgate ARC and Geneva Witherspoon for the following tips:
A hundred years ago this week, France’s most famous landmark, the Eiffel Tower, was first used as an antenna for radio programmes. Looming high above the city’s uniform skyline, the tower was an obvious choice to pioneer public radio in France, proving the country’s prowess in broadcast technology.
On 22 December 1921, just three years after the end of WWI, “Radio Tour Eiffel” broadcast its first ever show, a live performance featuring legendary singers.
The trial was the beginning of a long series of broadcasts that continues today, with 45 television stations and 32 FM stations – including RFI – broadcasting from the Eiffel Tower.
According to the Lille-based publication Le Réveil du Nord of 24 December 2021, “a concert by wireless telephony took place at the Lille Theatre”.
Famous artists of that era, the legendary Sacha Guitry, the soprano Jeanne Hatto, the tenor Maurice Dutreix and others sang in a microphone in a room in the Eiffel Tower, from where it was broadcast to a “wireless phone set” in the hall of the Lille theatre.
“A large audience attended this session,” according to the dispatch. [Continue reading…]
The Raspberry Pi makes an excellent gift on its own, but getting one in a custom Time Machine Radio is remarkably fulfilling. This holiday, a maker known as Byte-rider created a custom Raspberry Pi Zero 2 W-powered radio for his father. Continue reading →
Of course, in the spirit of all things Raspberry, the complete kit price is pretty reasonable at about $100 US. Here are details via Pi Hut:
The Pi400 has all of the great features of a Raspberry Pi 4 wrapped in a convenient and compact keyboard – it’s the ultimate coding machine!
The keyboard is available as a kit with everything you need in one box (minus a monitor), or on its own.
The Pi400 doesn’t compromise on performance either – in fact, the CPU is clocked to a whopping 1.8GHz which is made possible thanks to the large metal heatsink inside the keyboard.
CPU aside, the Pi400 boasts the same great specs and connectivity as a Raspberry Pi 4 – 4GB RAM, dual-band wireless networking, Gigabit Ethernet, dual-display output and 4K video playback.
USB, power, video, Ethernet and SD ports are located at the rear of the keyboard, including the familiar 40-pin GPIO connector.
The Raspberry Pi 400 is also available in a number of different regional variants (some international variants coming soon!).
The Raspberry Pi Model B has seen the same board layout since the Raspberry Pi B+ arrived in 2014. Sure the Raspberry Pi 4 swapped the Ethernet and USB ports around, but the same basic design has persisted. So when we received a parcel from Raspberry Pi Trading and opened the box to find a keyboard, we were somewhat puzzled as to the contents. Inside this compact and well designed keyboard is a Raspberry Pi 400, a variant of the Raspberry Pi 4 4GB designed specifically for this purpose.
Retailing as a single unit for $70 or as a complete $100 kit with mouse, power supply, cables, micro SD card and a copy of the Raspberry Pi Beginner’s Guide, the Raspberry Pi 400 could be the ideal way to introduce the Raspberry Pi to your home.
[…]Despite the change in form factor, this is still a Raspberry Pi 4 4GB and, as such, it behaves in exactly the same manner, with one exception. The Raspberry Pi 400 lacks the CSI and DSI connectors, used for the Camera and Official Touchscreen. Without these connectors there is no way to use those devices. This loss of the touchscreen connector is not such a big deal, but the camera connector is.
The range of Raspberry Pi cameras are cheap and effective add-ons (see our list of best Raspberry Pi accessories) that provide a fun stream of projects. If you want to create camera projects, then the Raspberry Pi 400 is not for you.[…]
I normally scoop up new Raspberry Pi products as soon as they’re released, but I’m flush with RPi’s at the moment! I do believe, however, I’ll eventually replace out my daughters’ Pi 4s with these all-in-ones.
When the Raspberry Pi 4 Model B was introduced last year, I immediately purchased two of the 4GB models for my daughters. A the time, 4GB was the maximum amount of RAM available.
Both of my daughters have been using their Pi 4’s with a Raspian distribution to learn Python, Linux Command Line and, of course, to cruise the web. They each had a Rasbperry Pi 3B prior to this and found that–especially if loading videos or media-rich web pages–it would often crash the browser. The Pi 4’s, however, have been much more stable.
The Raspberry Pi Foundation launched the 8GB version this morning. The price is $75 US for the board only.
SDRplay has released a new downloadable Raspberry Pi SD card image which adds support for the RSPdx and simultaneous use of both the tuners in the RSPduo.
This V0.7 release is the first build to support the RSPdx and RSPduo in master/slave mode. The image also supports the RSP1, RSP1A,RSP2 and RSP2pro.
The list of software on this image is: SoapySDR/SoapySDRPlay, SoapyRemote, Cubic SDR, ADSB (Dump1090), and the updated RSP TCP Server
The V0.6 download, with some additional third party software, is still available for the RSP1, RSP1A,RSP2, RSP2pro and RSPduo in single tuner mode.
Many thanks to SWLing Post contributor, Dan Srebnick, who notes that the Raspberry Pi 4 mini computer was unveiled this morning by the Raspberry Pi Foundation.
This model has a number of upgrades we’ve all been waiting for:
I love the Raspberry Pi and own a number of models that I’ve employed in various projects. For example:
Two RACHEL-PI systems (English and French) I’m evaluating for use with ETOW
A stand-alone SDR station
What excites me most about the Raspberry Pi 4 is the improved processor speed and larger allotment of RAM (up to 4 GB). This could make the Pi a more effective stand-alone or portable SDR station. The dual monitor capability could also be a big bonus. And, of course, GigaBit ethernet speeds will help make the Pi a better/faster connected device.
When the Raspberry Pi 3B+ was introduced last year, I hesitated one day and had to wait weeks for the second shipment. Not this time! I purchased two 4GB units (in two different shipments as most suppliers have a maximum of one per customer) and hope to receive them by mid-July.
If you’re interested in pre-ordering the Raspberry Pi 4, check out the Raspberry Pi Foundation website for recommended resellers.
Do you plan to grab a Pi 4? Would you like to share a recent project with us? Please comment!
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