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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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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
4.3 ★★★★★
Based on 453 reviews
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Product Reviews
★★★★★ 2
Not good quality
Did not stand up to the Border Collie test. Destroyed in less than 2 weeks.
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Reviewed in the United States on December 18, 2025
★★★★★ 1
Poor durability
My 15lb dog destroyed this within a couple hours. He is small but a might chewer. Not chew proof. The end pieces came off easily which could be a choking hazard. He loved it, the idea is good, but it did not last. If you get it, supervise your dog, only allow for short "teeth brushing" chew time.
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Reviewed in the United States on September 20, 2025
★★★★★ 5
Great quality & interest
Keeps my Shepard/Husky occupied for 30+ minutes. She hasn't even destroyed it.
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Reviewed in the United States on August 10, 2025
★★★★★ 4
Good for medium and large dogs not good for small dogs
Too big for dogs under 15 pounds. Treats are hard to get out of the four corners. My dog can barely pick this up. She weighs 12 pounds. She still found it interesting though trying to dig the treats out that she was unsuccessful. Even after I cut all the little triangle prongs off the four corners the treats are still stuck in there. There is a slot on the side that I can put half of a dental refill in the side and she can eventually get it out so there’s still somewhat of play and challenge received, but not that satisfied to me.
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Reviewed in the United States on October 3, 2025
★★★★★ 5
Great for aggressive chewers!
Size: Jumbo, Style: Peanut Butter
I have a very very aggressive chewer. She is a Rottweiler/Pitbull mix. Most toys she completely destroys within 2 days, sometimes 2 hours. I must praise this toy as she has had it for over 5 months and has not destroyed it! She loves chewing the ends and carries in her mouth squeaking it as she goes. I have 4 pups and they all take turns chewing when they can. I will be buying more Playology dog toys in the future.
Thank you for making such a great toy!!
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Reviewed in the United States on April 26, 2026