DX-888 是一款基于 NXP 车规级 TEF6686 DSP 芯片的高灵敏度便携式收音机， 由 ARESQ 开发。它结合了出色的选择性和超高的灵敏度，搭载 ESP32 微控制器和 2.4 英寸触摸屏，功能丰富。

The DX-888 is a high-sensitivity portable radio developed by ARESQ, built around NXP's automotive-grade TEF6686 DSP chip. It combines excellent selectivity, ultra-high sensitivity, and a rich feature set powered by an ESP32 microcontroller with a 2.4-inch touch screen.

The MMDVM Digital Trunk Board (STM32-DVM 405 RPT) is a GPIO/USB-based repeater/hotspot board that connects to your Raspberry Pi (or compatible SBC) via the GPIO serial interface (UART) or USB. It runs at 460800 baud and supports both digital and analog FM modes.

Only one model available: STM32-DVM(405 RPT) — 460800 baud.

STM32-DVM(405 RPT) — front view

STM32-DVM(405 RPT) — back view

Since the release of the MMDVM in early 2016, Johnathan Naylor's (G4KLX) creation has put the power back into the hands of radio operators around the world. This simple hardware and software combo can interface radios to a computer—like a Raspberry Pi—turning normal analog radios into digital radios.

After following this guide, you will be able to put together a multimode amateur digital repeater or high-powered hotspot that can be connected to the internet for worldwide digital communication.

The Radioberry PreAMP Power Amplifier (PA) module requires careful setup for reliable operation. This guide covers the key parameters: supply voltage, constant current limits, BIAS potentiometer adjustment, and the latest component changes.

SXceiver is a software-defined radio transceiver optimized for the 70 cm (430–440 MHz) amateur radio band.

Sold as a kit, SXceiver includes a printed circuit board with all SMD components pre‑mounted, and a through‑hole pin header for Raspberry Pi connection.

This article is based on the TETRA-BlueStation Wiki. Full credit to the MidnightBlueLabs team for the original documentation.

Welcome to the TETRA-BlueStation guide — the documentation platform for BlueStation: a FOSS TETRA stack aimed at providing an extensible basis for TETRA experimentation and research.

This article is republished from W0CHP.Radio. Originally authored by Chip Cuccio, W0CHP. Reproduced with the style and intent of the original.

Recently, we made a change to WPSD to help better educate users, and to make WPSD operate better with the various modems out there. However, users have been conditioned by poor documentation to select the incorrect modem type.

If you have been prompted to re-select your modem, or you are trying to find the "STM32-DVM / MMDVM_HS" modem in the Configuration Page, you'll want to read this document.

This guide covers the firmware upgrade process for the MMDVM Duplex hotspot (GPIO-based MMDVM_HS_Dual_Hat) to version 1.6.1 using the WPSD firmware binaries.