K307 22-Channel Desktop Jammer (40 meters)



K307 is able to block the following frequencies:

  • Full-band cell phone signals (5G/4G/3G/2G)
  • GPS L1 - L5
  • WiFi (2.4 & 5GHz)
  • Walkie-talkie
  • Remote control 433/315/868
Output Power: Total 45W,1-3W each band
Range: Upto 40 meters
Power Supply: AC110 or 220V to DC12V
Cooling System:
Aluminum alloy radiator, Build-in 5 cooling fan
Battery: 10000mAh
Battery Life: 120 minutes
Product Size: 450x 238x 60 mm
Product Weight: 8.0 kg
Package Includes:
Device x 1, AC adapter x 1,antenna x22,Car storage battery cable x1, Infrared Remote Control x1


Antenna Information

Specifications for Each Channels

The specifications provided for each channel are based on the item for the USA as a reference. As different countries operate on varying frequency ranges, we will fine-tune the frequency range according to your country before shipping to ensure the effectiveness of our products.


Channel Output Port Frequency Range
Output power
1 CDMA/RC868 850-894MHz 35dbm / 3W
2 GSM/LORA 900-960MHZ 35dbm / 3W
3 DCS/PCS 1805-1990MHZ 33dbm / 2W
4 3G, UMTS 2110-2180MHZ 33dbm / 2W
5 4G700 700-803MHZ 35dbm / 3W
6 4G2600 2496-2690MHZ 30dbm / 1W
7 4G1700 1710-1780MHZ 33dbm / 2W
8 4G2300 2345-2400MHZ 30dbm / 1W
9 5G 600 617-675MHZ 35dbm / 3W
10 5G 3.4G 3300-3600MHZ 30dbm / 1W
11 5G 3.8G 3600-3900MHZ 30dbm / 1W
12 5G 4.0G 3900-4200MHZ 30dbm / 1W
13 WIFI 2.4G 11.b, g 2400-2500MHZ 30dbm / 1W
14 WIFI 5.2G 11.a 4900-5500MHZ 30dbm / 1W
15 WIFI 5.8G 11.a 5500-5900MHZ 30dbm / 1W
16 GPS: L1 + Glonass L1 1570-1580Mhz 33dbm / 2W
17 GPSL2+L5 + Glonass L2 1170-1280MHZ 33dbm / 2W
18 GPSL3+L4 1370-1390MHZ 33dbm / 2W
19 Lojack Car Tracking 167-175MHZ 35dbm / 3W
20 VHF 135-175Mhz 35dbm / 3W
21 UHF/RC433 400-470MHZ 35dbm / 3W
22 RC315 315MHZ 35dbm / 3W

22 Channel


40 meters



Output Power


Turnaround Time

Please noted that all our products are made to order. Once your order is confirmed, it takes us about 5 business days to produce your item. During this time, we rigorously test everything to make sure it works perfectly in your country. After the testing phase, we hand it off to the fastest courier service available, which usually gets your order to you in 5 to 7 days. So, you can expect to receive your order within 10 to 12 days after confirmation


Can you ship your products to my country?

Absolutely! We use international shipping, so no matter where you are on the planet, we've got you covered.

Which courier do you use?

We primarily use DHL. If DHL doesn't serve your area, we'll switch to UPS or FedEx.

How can I track my package?

You'll get an email with your DHL tracking ID around the sixth day after order confirmation. You can use this ID to track your package on the DHL website.

Is the packaging discreet?

Yes, it is. The outer packaging will be labeled as containing other electronic products.

Where do the products ship from?

All orders are shipped from Hong Kong.

I didn't receive my order.

This is rare, but if it happens, just reach out to our customer service team and we'll sort it out for you.