Software-Defined Radio SDR Multi-Channel RF Signal Source – 100MHz–6GHz Full-Band Coverage, 400MHz Sweep Bandwidth

The LX-DS800 is an innovative and practical software-defined radio (SDR) multi-channel RF tuner solution supporting multiple modulation schemes including LoRa, FM, AM, and FSK.

The product supports frequency sweep signals across 100 MHz to 6 GHz, with up to eight selectable sweep segments. Each segment supports a maximum bandwidth of 50 MHz, for a combined total bandwidth of 400 MHz across eight segments. Within each 50 MHz band, up to 10 sub-segments can be custom-configured with a minimum step size of 1 MHz.

Full-band jamming across 100 MHz to 6 GHz essentially covers all common wireless communication bands, including civilian communications (e.g., 2.4 GHz, 5.8 GHz, Wi-Fi), Bluetooth, UAV remote control links, selected 4G/5G bands, and walkie-talkie frequencies.

This functions as an all-in-one signal jammer capable of handling nearly all common wireless communication frequencies, eliminating the limitations of conventional equipment designed only for specific frequency bands.

Figure 1 -- LX-DS800 Signal Source Board Dimension Drawing

Board dimensions: 80 × 50 × 11.27 mm

Net weight: approx. 67 g (with single-sided heat sink enclosure)

• Pin 1: V+ (Positive)
• Pin 2: GND (Ground)

• Pin 1: 3.3 V Output
• Pin 2: Reserved GPO Output
• Pin 3: Reserved PPS Input
• Pin 4: UART Tx Output
• Pin 5: UART Rx Input
• Pin 6: GND (Ground)

MCX TX1 (currently only TX1 interface is available)

The signal source board supports signal transmission across the 100 MHz to 6 GHz range, with a maximum bandwidth of 400 MHz and a minimum step size of 1 MHz. It essentially covers all common wireless communication bands, such as 2.4 GHz, 5.8 GHz, Wi-Fi networks, UAV remote control links, and walkie-talkie frequencies.

Figure 3 -- 400 MHz Spectrum Diagram

Figure 3 -- 50 MHz Spectrum Diagram

The operating principle is similar to a scanner -- it rapidly cyclically transmits jamming signals across the entire 100 MHz to 6 GHz range, enabling more efficient, effortless, and rapid signal suppression.

The LoRa modulation signal jamming capability represents another highlight of the signal source board targeting modern wireless communication technologies. LoRa is a modulation scheme designed for low-power, long-distance transmission, commonly used in UAV flight control systems to easily achieve kilometer-range communications.

The signal source board can generate signal waveforms conforming to the LoRa protocol. These waveforms can collide with real communication links, preventing the receiver from correctly decoding and thereby achieving precise jamming.

Figure 4 -- LoRa Signal Spectrum Diagram

Figure 4 -- LoRa Signal Spectrum Diagram

Other modulation signals serve as carriers for encoding information in wireless communications -- for example, modulating voice or data onto radio waves for transmission.

The signal source board can generate jamming signals in these formats, directly suppressing the communication protocols of target systems. Similar to LoRa, these are jamming signals generated based on communication protocols. Common AM/FM modulation signals can suppress walkie-talkie communications during security incidents and block external broadcast signals in other scenarios to prevent information leakage.

FM Signal Spectrum

AM Signal Spectrum

FSK Signal Spectrum

ASK Signal Spectrum

Figure 5 -- QPSK Signal Spectrum Diagram