Category Archives: Research

一些R&D研究個案不一定有成果，但唔保持每事問的好奇心，就永遠只是跟人後面。

同樣，本地ham radio界一些光怪陸離的現象；以個案研究、科學數據去proof，比齋吹水互相指罵更能以理服人。

A simple USB programming cable for Yaesu FT-90R

Posted on March 4, 2018 by administrator

   This article describes how to make a USB programming cable for Yaesu FT-90R, which I did not find any information in Web. It should work with other Yaesu handheld or mobile rig, which use similar protocol, such as FT-2600M, … Continue reading →

Posted in English Articles, Research | Tagged , , , | 7 Comments

We are 454

Posted on November 11, 2017 by administrator

Hose line  網頁 Region screen capture 前言 本篇是語音通訊篇，主要示範經 BM 進行語音 QSO。 外加兩機經 BM 短訊互傳 。 最後是講解以 DMR 機遙控 Pi-star reboot，熄機作結。 兩 DMR 機通訊的 demo，設定如下: 一號機: freq: 435.150MHz 經 MMDVM_HS 上德國 BM   二號機: freq: 430.050MHz 經 DVMega 上俄國 BM* 留意兩機頻率不一樣。 … Continue reading →

Posted in Digital Radio, Research | Tagged , , , | Leave a comment