Good Signal JammerShenzhen Keenpower Electronic Limited

Portable Signal Jammer Comparison

The portable range spans eight-band to 24-band configurations. Compare the actual frequency configuration, battery and dimensions: an antenna count or a higher output figure alone does not establish compatibility or coverage.

11 models · Product information reviewed 23 October 2026

Model specification comparison

ModelBands / configurationOutput powerBatteryOperating timeDimensions
121A-1616 bands / A,B,C variantsTotal 16W,1W each band with 2dbi gains omni antennas7.4 V / 12000 mAh7.4 V / 12000 mAh built-in battery; approximately 2-2.5 hours depending on configuration190x126x46 mm(without omni Antenna)
121A-2424 bandsTotal 24W,1W each band with 2dbi gains omni antennas7.4V/12000mAhBuilt-in battery:7.4V/12000mAh Continue working: Around 100 minutes200x133x66mm (without antenna)
JAX-121A-10A10 bandsTotal 7W,0.7W each band7.4V/8000mAhBuilt-in battery:7.4V/8000mAh Continue working: more than 2.0+ hours160x 83x 46 mm(not Include Antenna)Length of antenna :166mm Gain:2.0dbi
JAX-121A-10B10 bandsTotal 7W,0.7W each band7.4V/8000mAhBuilt-in battery:7.4V/8000mAh Continue working: more than 2.0+ hours160x 83x 46 mm(not Include Antenna)Length of antenna :166mm Gain:2.0dbi
JAX-121A-10C10 bandsTotal 7W,0.7W each band7.4V/8000mAhBuilt-in battery:7.4V/8000mAh Continue working: more than 2.0+ hours160x 83x 46 mm(not Include Antenna)Length of antenna :166mm Gain:2.0dbi
JAX-121A-10D10 bandsTotal 7W,0.7W each band7.4V/8000mAhBuilt-in battery:7.4V/8000mAh Continue working: more than 2.0+ hours160x 83x 46 mm(not Include Antenna)Length of antenna :166mm Gain:2.0dbi
JAX-121A-12B12 bandsTotal 8.4W,0.7W each band(add antennas gain more than 12Watt)7.4V/10000mAhBuilt-in battery:7.4V/10000mAh Continue working: more than 2.0+ hours165x 93x 46 mm(not Include Antenna)Length of antenna :166mm Gain:2.0dbi
JAX-121A-1818 bands / 16 antennasTotal 18W,1W each band with 2dbi gains omni antennas7.4V/12000mAhBuilt-in battery:7.4V/12000mAh Continue working: Around 2.5 hours190x126x46 mm(without omni Antenna)
JAX-121A-8-PRO85.6 W total, approximately 0.7 W per band4700 mAh rechargeable batteryApproximately 90 minutes163 x 85 x 43 mm excluding antennas
JAX-121A-12A12 bandsTotal 8.4W,0.7W each band(add antennas gain more than 12Watt)7.4V/10000mAhBuilt-in battery:7.4V/10000mAh Continue working: more than 2.0+ hours165x 93x 46 mm(not Include Antenna)Length of antenna :166mm Gain:2.0dbi
JAX-121P-1212 bandsTotal 12W,1 W each band(add antennas gain more than 12Watt)7.4V/10000mAhBuilt-in battery:7.4V/10000mAh Continue working: more than 2.0+ hours160x 90x 56 mm(not Include Antenna)Length of antenna :133mm Gain:2.0dbi

Listed figures come from the supplied product information. Coverage and runtime depend on the final configuration and operating conditions.

Model details and configuration notes

121A-16 Portable Signal Jammer

121A-16 Portable Signal Jammer

16-band, 16 W portable model with A/B/C frequency configurations and a 12000 mAh battery.

Configuration notes

A, B and C frequency configurations are listed in the supplied specification. Confirm the exact bands, runtime and battery voltage before ordering.

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JAX-121A-10B Portable Signal Jammer

JAX-121A-10B Portable Signal Jammer

Ten-band, 7 W portable model with an 8000 mAh battery. Its additional GPS band labels require confirmation against the channel table.

Configuration notes

The overview and channel table differ in the GPS band labels. Confirm the required GPS configuration before ordering.

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JAX-121A-18 Portable Signal Jammer

JAX-121A-18 Portable Signal Jammer

18-band, 18 W portable model with 16 antennas, dual-band connections and a 12000 mAh battery. EU and US configurations differ.

Configuration notes

The supplied specification describes 18 bands using 16 antennas, including dual-band antenna connections. The A18-EU and A18-US configurations differ.

View specifications

Model selection questions

How do the JAX-121A-10A, 10B, 10C and 10D differ?

All four are listed with ten antennas, 7 W total output and an 8000 mAh battery. Their frequency configurations differ: 10A lists Wi-Fi 5.8 GHz; 10B lists additional GPS bands; 10C lists 315/433/868 MHz remote-control bands; 10D lists UHF/VHF and additional GPS bands. Check each channel table and the configuration notes.

Does the JAX-121A-18 have 18 antennas?

The supplied specification describes 18 bands using 16 antennas, including dual-band connections. The EU and US frequency configurations also differ.

Is antenna count enough to select a model?

No. The required frequency ranges, power supply, battery, dimensions and the confirmed configuration matter. Review the product channel table and ask the sales team to confirm ambiguous source specifications.

Confirm a product configuration

Send the model and your requirements to our team. We will help identify the specification and supplied accessories to confirm for the order.

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