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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.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.4 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Best Blanket!
Color: Bubble Tie Brown, Size: Throw (50" x 60")
The quality of this blanket is wonderful. The color is as shown in the picture. There is no shedding. The material is fluffy and I would say a medium weight in material. I absolutely love it!
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Very warm and cozy
My teenage daughter loves it. This is a perfect way to wear your blanket. This is the best Christmas present. I purchased it for one of my 3 kids, then I needed to order 2 more for the other 2 because they also wanted it. The fabric is very soft, and the inner side is fluffy and warm, great for cold winter evenings. I was not sure about the hood, but my kids love it, so I guess it's a good thing to have it.
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Reviewed in the United States on November 9, 2025
★★★★★ 5
Soft, cozy, and very warm
Bought it as a gift, and it was a big success! This is a well made product. It is thick, soft, and very warm. It gets much plush and softer after washing and drying, which I highly recommend to do before wearing it.
Excellent value for the price.
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Reviewed in the United States on February 18, 2025
★★★★★ 5
Warm, soft, made to last
Absolutely love this thing! It is perfectly warm and toasty and extremely soft to the touch. The hood and large pocket are useful and perfect. I have put this in the washer and drier several times and have worn it A LOT over the 2 months I’ve owned it yet it still looks brand new. It is seriously SO. COMFORTABLE. When I had the flu, I wore this and didn’t have to worry about tripping over a blanket draped over myself. I can’t think of a single negative to say!!
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Reviewed in the United States on February 6, 2025
★★★★★ 5
Cozy, warm
Cozy, given to my friend who loves cats as a gift. She loved it and it’s nice and warm in the winter!
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Reviewed in the United States on September 17, 2025