Pants for Birds 推出了 ADSBee m1421 开源双频 ADS-B 飞机追踪模块 1。该模块基于 Semtech LR2021 和 TI CC1314 芯片构建，实现超低功耗、小体积、低成本的双频（Mode S 和 UAT）接收 1。其尺寸为 23.4 x 14.5 x 2.7 毫米，重量不到 2 克，功耗低于 60mW 1。
在定价方面，ADSBee m1421 标准版单价为 48 美元，NDAA 合规版单价为 75 美元，预计 2026 年 12 月实现两者成本持平 1。该模块的固件和原理图采用 GPL v3 开源许可 1。其支持的输出协议包括 GDL90、MAVLINK1、MAVLINK2、Aircraft JSON、CSBee 和 raw packets 1。此外，LR2021 在高吞吐量配置下不支持每包时间戳和 RSSI 1。
Pants for Birds has introduced the ADSBee m1421, an open-source dual-band ADS-B aircraft tracking module designed for ultra-low power consumption, a compact size, and cost-effectiveness 1. Weighing less than 2 grams and measuring 23.4 x 14.5 x 2.7 mm, the device consumes under 60 mW of power 1. Built on Semtech LR2021 and TI CC1314 chips, the tracker is capable of receiving dual-band Mode S and UAT signals 1.
The standard version of the ADSBee m1421 is priced at $48, while the NDAA-compliant version costs $75; the company expects the costs of both versions to equalize by December 2026 1. The module's firmware and schematics are released under the GPL v3 open-source license 1. It supports multiple output protocols, including GDL90, MAVLINK1, MAVLINK2, Aircraft JSON, CSBee, and raw packets 1. However, the LR2021 chip does not support per-packet timestamps and RSSI in high-throughput configurations 1.
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