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The portable radio receiver is made of aluminium alloy+metal, sturdy and durable, the PCB retains the SI4735 package, users can replace the chip by themselves, and the software is compatible.
Full band receivers lightweight and sturdy components and unique and exquisite design maximize portability.
5. Frequency step switch (1, 5 and 10KHz); Band band[] = { FM_BAND_TYPE, 8400, 10800, 10430, 10, LW_BAND_TYPE, 100, 510, 300, 1, MW_BAND_TYPE, 520, 1720, 810, 10, SW_BAND_TYPE, 1720, 3500, 1900, 1, // 160 meters SW_BAND_TYPE, 3500, 4500, 3700, 1, // 80 meters SW_BAND_TYPE, 4500, 5500, 4850, 5, SW_BAND_TYPE, 5500, 6300, 6000, 5, SW_BAND_TYPE, 6300, 7800, 7050, 5, // 40 meters SW_BAND_TYPE, 7800, 10000, 9600, 5, SW_BAND_TYPE, 10000, 11000, 10100, 1, // 30 meters SW_BAND_TYPE, 11000, 12500, 11940, 5, SW_BAND_TYPE, 12500, 13900, 13600, 5, SW_BAND_TYPE, 13900, 14500, 14270, 1, // 20 meters SW_BAND_TYPE, 14500, 15900, 15300, 5, SW_BAND_TYPE, 15900, 17900, 17600, 5, SW_BAND_TYPE, 17900, 18300, 18100, 1, // 17 meters SW_BAND_TYPE, 18300, 21900, 21200, 1, // 15 mters SW_BAND_TYPE, 21900, 26200, 24940, 1, // 12 meters SW_BAND_TYPE, 26200, 27900, 27500, 1, // CB band (11 meters) SW_BAND_TYPE, 27900, 30000, 28400, 1}; // 10 meters
FM stereo, AM, LW, SW, SSB world band receiver,radio receiver suitable for global FM broadcast reception.
Features of this sketch: 1. FM, AM (MW and SW) and SSB (LSB and USB); 2. Audio bandwidth filter 0.5, 1, 1.2, 2.2, 3 and 4Khz;
3. 22 commercial and ham radio bands pre configured; 4. BFO Control;
Color:Black. Material : Aluminum Alloy. Size:10x10x4 cm/3.94x3.94x1.57 inch.
ETR2k3
Reviewed in the United States on September 19, 2024
Out of the box, this radio performs as expected with the stock firmware. I was surprised to see that this version came with a battery, which was a pleasant bonus. It’s a reasonably neat radio.That said, the cool factor of the ATS-20 (and other SI4732 based radios) is that there are custom firmwares available that make these great for enthusiast use and fix some of the quirks of the stock firmware. Like others have said, mine either came with no Bootloader installed or a bad Arduino clone installed. I can’t update to access any of the additional features. Which is frustrating, since the listing highlights the USB data port, and it just straight up doesn’t work. I would have purchased from a different vendor if I knew they all came like this.
Customer
Reviewed in the United States on July 13, 2024
Out if the box, it powered up and I was able to start using it. Picked up broadcast AM and FM without issue and I was able to pick up Ham CW, LSB, and USB traffic on 40 and 20 meters with the "stock" antenna. I will be attaching it to an outdoor antenna tomorrow and am expecting to listen to way more activity. I would buy again!
william
Reviewed in the United States on January 14, 2024
I bought the ATS20 in January and now in May, it began malfunctioning. It locks up and I can't tune or use any of the functions. At times it won't load anything. I called Amazon Customer Service and they said there's no warranty or replacement through them. It should at least have a one-year warranty for the price. I was given a phone number for the company. I finally got through to Ham Radio and they told me they don't sell this radio even tho they're listed as the seller. I will continue to try but Im disappointed with the money I spent on it and after a short period it's not working. The problem is these companies are in China and it is hard to find out much at times.
Richard Pereira
Reviewed in the United States on September 12, 2023
Good value for the money. Does not receive air bands for aircraft.
gidshoots
Reviewed in the United States on December 13, 2023
Great little radio. Excellent receiver. I bought one , liked it so much I bought. Another for my brother. We are both active licensed Amateur Radio Operators. We both have enjoyed how capable these units are. It’s a small size and a small display. Sound is good.
howard m suits
Reviewed in the United States on November 27, 2023
This little receiver is not the best but it is fun to use, kq4lxg, mike
JimT
Reviewed in the United States on October 29, 2023
I already had an ATS-20, but needed two for a project. This one was about 25% less expensive than the first, so I bought it.First the good: the "+" isn't that much of a change that I could see, but did have some nice things, like muting when switching to FM or SSB, so there isn't a loud "pop", and it has a battery level indicator.The bad news is that this came with V1.1.5 firmware, and when I tried to update it to V3.0.7, Arduino IDE did not recognize it. (I needed to be able to update it because I had some custom changes to the code that were needed for the project.) In fact, neither MacOS nor Linux detected a USB serial device. Since the Arduino Nano this uses as it's microcontroller has it's USB serial chip wired directly to the USB jack in the rear panel, I guessed that this chip was bad. Unfortunately, that chip is on the back side of the Nano, so I had to remove the Nano, which involved desoldering about 20 pins. Just the same, I had another Nano, so I spent about an hour replacing it. This worked (whew!), and my customized V3.0.7 code worked, so a) I didn't get anything in the process, and b) the differences between the ATS-20 and ATS-20+ did not affect the firmware.In case you didn't figure it out from this write-up, this is a highly hackable radio, and it's firmware and hardware are open source. Google PU2CLR SI47XX for all of it.
StrongBad
Reviewed in the United States on January 14, 2023
Update: The first one I purchased lost its programming after a few months. It still turns on, but never boots up the "radio." I purchased an identical replacement in 2023, which did not have proper isolation and produced an audio that had a 2 cps flutter that made it impossible to understand speech, no mater how powerful the incoming signal was. I returned it. Suggestion: get a real radio.---------------------------It's durable and well made, but it DOES need an outdoor antenna (wire will do nicely) and a good counterpoise to receive stable signals, otherwise "Clear Channel" AM stations on any band give erratic receive volume and clarity. I found that 10 meters (33 feet) of wire under the eaves of the building as the antenna, plus 10 meters of wire forming a rectangle upon the legs of the bed as the "ground", settles things down nicely. (A BNC male to dual binding post adapter helps.) The battery holds a good charge, delivering at least overnight listening, and charges quickly from a USB outlet. I did not give this device five stars because its operation is digital, but the wait between dial change and sound resumption is faster than most such radios costing quite a bit more. Now if international short-wave stations would come back, we could get fake news from everywhere!
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