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Description
4 in 1 Multi-band Simultaneous SDR Radio Passive Filter, 49x45x19mm1. This product includes four independent bandpass filters, divided into four frequency bands: P1 filter (0. 5 1. 5MHz) for AM radio reception; P2 filter (4. 5 12MHz) for shortwave low frequency bands and the 40 meter amateur band; P3 filter (12 30MHz) for shortwave high frequency bands and the 20 meter, 15 meter, and 10 meter amateur bands; and P4 filter for FM broadcast frequencies (88 108MHz). 2. Can be used with a 1 to 4 active splitter to provide
1. This product includes four independent bandpass filters, divided into four frequency bands: P1 filter (0.5-1.5MHz) for AM radio reception; P2 filter (4.5-12MHz) for shortwave low-frequency bands and the 40-meter amateur band; P3 filter (12-30MHz) for shortwave high-frequency bands and the 20-meter, 15-meter, and 10-meter amateur bands; and P4 filter for FM broadcast frequencies (88-108MHz).
2. Can be used with a 1-to-4 active splitter to provide pre-filter functionality for SDR, radio, and receivers.
3. Complements the lack of a pre-filter design in all-metal aluminum-cased malachite radios, reducing interference from AM, shortwave, FM, and broadcast frequencies.
4. Enables simultaneous reception of multiple channels and multiple frequency bands.
5. Dimensions: 49x45x19mm
6. Package contents:
- Filter x 1
- Stands x 1
Specification:
| Package Weight |
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 4
Perfect fit in my dog crate, nice loft to it
Color: Grey, Size: 35" x 23"x 3.5"
Really nice dog bed, fits perfectly in the crate that I have. This thing is rather large and bulky and difficult to wash. I wish that there was a zipper on it and that you could remove the stuffing so that you can wash just the cover. Before putting it inside the dog crate, I had it on my couch. My daughter thought it was a new pillow for her to use and was bummed when I told her it was for the dogs. She liked it and thought it was quite comfortable.
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Reviewed in the United States on March 14, 2026
★★★★★ 5
AMAZING
Color: Grey, Size: 41" x 27"x 4"
This bed is huge and perfect for my two doggies who want to share but need a bigger space. Its also firm so that they have all the support they need. Its an amazing bed for my fur babies
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Reviewed in the United States on April 16, 2026
★★★★★ 5
So soft, nice padding, & color perfect for a dog’s bed
Color: Beige, Size: 41" x 27"x 4", Color: Beige, Size: 41" x 27"x 4"
Of course, this dog bed came lumpy, but once you roll it out and manipulate it it lays perfect. My dog Loki outgrew the little one that we had but this one is perfect. He’s 55 pounds and I would say it’s even a little bit big for him. We will definitely keep it though. It’s so soft and pretty and Loki will not leave it so it’s a win-win.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
Great Pet Beds!
Color: Grey, Size: 41" x 27"x 4"
These dog beds are wonderful! I have two large dogs (65-70 lbs) who lay on them daily. They’ve maintained their shape and thickness. The size is perfect, and they’re easy to spot clean. I definitely recommend them, especially if using in a carpeted room. Great value!
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Single greatest thing I’ve ever bought for my dogs
Color: Charcoal, Size: 35" x 23"x 3.5", Color: Charcoal, Size: 35" x 23"x 3.5"
Few years ago we got our dog a dog. It was a bad idea. Our first dog is incredibly smart. He’d much rather hang out with humans, sitting in his own chair at the table while we play board games and chat than chase a ball. He uses talking buttons and picked it up quickly. Even as a little puppy he was kind of serious and when we’d take him to the dog park he’d mostly just run around barking at other dogs who were having too much fun.
Then came his brother who turned out to be the absolute opposite in every way. A silly, goofy, snuggly, floppy little muppet of a dog. Highly empathetic and Looooves to make people laugh. Our other dog mostly wanted nothing to do with him, barely tolerating him at the best of times. We thought, surely he’ll learn to love his brother. But 3 years later… nope.
Our first dog loves a good pillow so I thought this might make a good gift. I had no idea just HOW good. For some reason ever since our dog opened this gift he’s been obsessed. But so has our other dog. We initially were worried it would become one more thing for them to fight over BUT we were wrong. The dogs have been getting a long SO well! As long as it’s on this pillow, our first dog allows our second dog to come close enough to touch him.
They sleep next to each other, they wrestle, there’s no growling or grumping and our first dog will come over and lay next to his brother if he’s laying on this.
We’ve started calling it The Peace Pillow.
Anyway, I could have just said “it’s great” but it might actually be magic. Your experience may vary.
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Reviewed in the United States on January 12, 2026
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