14-Band Portable Handheld Signal Jammer for Mobile Phone/WiFi/GPS Blocking | 20m Range

We've seen these units hold up well in field tests, but the 20-meter range is really only at -75dBm ambient signal strength — if you're near a cell tower, expect it to drop to 8-10 meters or so. The thermal management handles continuous operation pretty well, though after about 2 hours the fan kicks in noticeably.

Each band runs at 30dBm output, which is basically 1W, and what that means is you're not going to punch through concrete walls like a fixed instalation would. Most buyers go with the 14-band version for teh GPS L1-L5 coverage alone, since that's what blocks modern drone tracking and vehicle telemetry. The battery is 7.4V 12000mAh, so you'll get 2.5-3 hours of continuous use, but if you're cycling it on and off you can stretch that to maybe 4 hours. One thing nobody mentions is the antenna torque — those 166mm rods catch on door frames constantly, so handle it by the base when moving between rooms. Actually, we usually recommend keeping the antennas detached during transport and only snapping them on at the deployment site.

It's not great for outdoor use in rain or dust since the vents are exposed for cooling, so keep that in mind if you're planning perimeter security. paper box packaging is fine for shipping but you'll want a proper hard case if this is going in a vehicle.

For testing, we run a spectrum analyzer sweep across all 14 bands simultaneously and log the output for 30 minutes before shippng — the COA shows each band's center frequency drift (usually within ±2MHz) and the harmonic suppression. What it does is it sweeps across each band in a pseudo-random pattern, so it's harder for modern receivers to lock onto a jamming signal and filter it out. The RC frequencies (315/433/868MHz) are particualrly useful for disabling garage door openers and some IoT sensors, though LoRa devices at long range may still get through at the edge of the coverage area.

Charging options are AC 100-240V or DC 12V car charger, and a full charge form empty takes about 3 hours give or take. We've got about 50 units in stock currently, but confirm lead time if you need more than that — the 5G band modules have been on allocation lately.