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Field-tested the G-NiceRF LoRa2021 module (Semtech LR2021) at Shenzhen OH Bay, measuring 100-packet PDR at 876 m, 1.4 km and 1.8 km in Sub-GHz and 2.4 GHz bands. Compare FLRC high-speed (up to 2.6 Mbps, 255B) vs LoRa long-range modes and get rate-selection tips.

Stop judging a LoRa module by one current number. This article looks at Sleep, RX, and time on air (ToA), using a power budget approach to estimate battery life. With two LR1121-based modules as examples, you can see which stage drains power most and pick key settings (SF, BW, retries) with confidence.

SA818Pro from G-NiceRF is a high-performance walkie-talkie module integrating a microcontroller, RF transceiver, and power amplifier. An enhanced version of SA818S, it supports independent TX/RX frequencies and adds lightweight data transmission alongside voice intercom. With 32.5 dBm max power, stable signal transmission, and high sensitivity (-124 dBm), it ensures reliable long-distance communication. Ideal for intercoms, security systems, and outdoor sports. CE/FCC certified.

Stop “outdoor signal attenuation” that’s actually internal noise. This guide explains how VHF walkie-talkie power pulses (16 Hz), TDD switching, grounding, and rail ripple create hum and dropouts—and how to fix them with proper decoupling, high-PSRR LDOs, filtering, PCB layout, plus DMR818S/DMR858M module options.

UHF walkie-talkie modules are widely used in industrial and professional communication. This article compares the power output, communication range, and application characteristics of different models to support system selection.