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P-28Ultra - Most Powerful Multi-Band all in one Portable Mobile Phone Jammer
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- P-28Ultra
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- 1 year warranty
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The P-28Ultra best portable signal jammer is a high-performance, full-band solution designed for professionals seeking reliable protection against unwanted signal intrusion. With its sleek, compact design, this device effectively blocks a broad spectrum of signals, including GSM, 3G/UMT, 4G, 5G cell phones, WiFi 2.4G/5G/6E, GPS L1–L5, UHF, VHF, LOJACK, RC 433/315/868 MHz, LoRa, and FM radio.
Powered by 28 watts of jamming output, the P-28Ultra can neutralize up to 28 frequency bands simultaneously. The high-gain omnidirectional antenna ensures 360° signal coverage, while the DIP switch gives users the flexibility to control each frequency band individually.
Engineered for maximum portability, the all in one Jamming device weighs only 4.0 kg and comes with a durable carrying case, making it perfect for field operations, travel, and tactical use. An integrated LCD display shows real-time battery status and signal strength, so you're always in control.
To ensure long-term stability and performance, the unit features an advanced cooling system with a high-efficiency aluminum heat sink and four silent built-in fans. The internal battery delivers up to 80 minutes of continuous operation on a single charge.
The FR-P28 is a portable Blocker covering the 87–6425 MHz range. Below are all the available jamming frequencies
| Channel | Band/Protocol | Frequency Range | Output Power |
|---|---|---|---|
| CH 1 | VHF / LOJACK | 135–175 MHz | 30±1 dBm / 1±0.2 W |
| CH 2 | 5G600 | 617–698 MHz | 30±1 dBm / 1±0.2 W |
| CH 3 | 5G3700 | 3600–3900 MHz | 30±1 dBm / 1±0.2 W |
| CH 4 | 3G2100 | 2110–2180 MHz | 30±1 dBm / 1±0.2 W |
| CH 5 | RC-868 | 868 MHz | 30±1 dBm / 1±0.2 W |
| CH 6 | Wi-Fi 5.2 GHz (802.11a) | 5100–5500 MHz | 30±1 dBm / 1±0.2 W |
| CH 7 | 4G2600 | 2620–2690 MHz | 30±1 dBm / 1±0.2 W |
| CH 8 | 4G800 | 790–826 MHz | 30±1 dBm / 1±0.2 W |
| CH 9 | FM Radio | 80–108 MHz | 30±1 dBm / 1±0.2 W |
| CH 10 | RC-433 | 433–434 MHz | 30±1 dBm / 1±0.2 W |
| CH 11 | 4G700 | 700–803 MHz | 30±1 dBm / 1±0.2 W |
| CH 12 | GPS L1 | 1560–1610 MHz | 30±1 dBm / 1±0.2 W |
| CH 13 | LORA / RC-915 | 900–930 MHz | 30±1 dBm / 1±0.2 W |
| CH 14 | 4G2500 | 2500–2620 MHz | 30±1 dBm / 1±0.2 W |
| CH 15 | GPS L2/L3/L4/L5 | 1170–1390 MHz | 30±1 dBm / 1±0.2 W |
| CH 16 | CDMA850 | 851–894 MHz | 30±1 dBm / 1±0.2 W |
| CH 17 | 4G1700 | 1710–1780 MHz | 30±1 dBm / 1±0.2 W |
| CH 18 | WiFi 6E (802.11ax) | 5925–6425 MHz | 30±1 dBm / 1±0.2 W |
| CH 19 | RC-315 | 315 MHz | 30±1 dBm / 1±0.2 W |
| CH 20 | GSM900 | 925–960 MHz | 30±1 dBm / 1±0.2 W |
| CH 21 | DCS1800 | 1805–1920 MHz | 30±1 dBm / 1±0.2 W |
| CH 22 | Wi-Fi 2.4 GHz (802.11b/g) | 2400–2500 MHz | 30±1 dBm / 1±0.2 W |
| CH 23 | Wi-Fi 5.8 GHz (802.11a) | 5500–5900 MHz | 30±1 dBm / 1±0.2 W |
| CH 24 | 5G3300 / 3500 | 3300–3600 MHz | 30±1 dBm / 1±0.2 W |
| CH 25 | UHF & CDMA450 | 400–470 MHz | 30±1 dBm / 1±0.2 W |
| CH 26 | 5G1500 | 1427–1518 MHz | 30±1 dBm / 1±0.2 W |
| CH 27 | PCS1900 | 1920–2000 MHz | 30±1 dBm / 1±0.2 W |
| CH 28 | 4G2300 | 2300–2400 MHz | 30±1 dBm / 1±0.2 W |
Technical Specifications
Effective Blocking Range: Covers an area of approximately 10 to 25 meters, depending on local signal intensity.
Power Input: Operates via AC adapter (110V–240V, 50/60Hz), converting to 12V DC for device input.
Vehicle Support: Compatible with 12V car power sources (DC input).
Dual Mode Operation: Can function while charging, although it's advised not to use this feature for more than 3 hours continuously.
Device Dimensions: Measures 210 mm x 132 mm x 85 mm (excluding antennas).
Antenna Length: Each antenna measures approximately 192 mm.
Antenna Gain: Rated between 1 and 3 dBi for optimal signal control.
Standard Packaging: Neutral box size – 295 mm × 260 mm × 125 mm, gross weight approx. 4.0 kg.
Protective Case Option: With rugged carry case – 345 mm × 335 mm × 145 mm, total shipping weight approx. 6.0 kg.
📦 What's in the Box
P-28Ultra Portable Signal Jammer
Full Antenna Set
AC Power Adapter (U.S. standard)
12V Vehicle Charger
English Instruction Manual
Shockproof Carry Case
The P-28Ultra and PJ-27 are sister models with nearly identical performance.
The main difference lies in the design — the PJ-27 (also called FR-P-027) has a simpler exterior, while the P-28Ultra features an updated design and improved heat dissipation.
After several user tests, the P-28Ultra has shown slightly better real-world performance compared to the PJ-27. To help more users experience the benefits of the P-28Ultra, we're currently offering it at our best promotional price.
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