DIY Antennas, QRP, SDR & Ham Radio Projects from VU3DXR
Explore technical guides, modifications, and homebrew projects involving Motorola radio equipment. From interfacing Motorola modules with amateur radio projects to leveraging high-quality RF components in DIY transceivers, find detailed insights for the ham radio community.
This article explains how to build a low-cost ribless programming cable for Motorola GM360, GM338, and GM300 radios. It uses a USB-to-TTL adapter, RJ45 connector, and a diode to enable direct serial communication without a RIB unit. The guide covers wiring, setup, and software configuration for reliable radio programming.
Decoding the Motorola GM300 model number provides critical details about the radio’s specifications, such as frequency band, power output, channel capacity, and more. The GM300 model number typically follows Motorola’s standard convention, with the first six characters indicating the base model and the subsequent characters specifying features like RF power, frequency range, channel spacing, and […]
The GM300 series radios are line of two-way radios manufactured by Motorola Solutions. They are popular choice for amateur radio operators due to its features, performance, and affordability. GM300 is also a very durable radio. It is built to withstand the elements and can handle even the most demanding conditions. Similarly, the Motorola GM338 is […]
DIY Programming cable for a Motorola GM 300 series two-way radio To make a DIY programming cable for a Motorola GM300, you will need the following materials: A USB-TTL adapter An RJ45 Ethernet connector A standard silicon signal diode, such as the 1N4148 An Ethernet cable. Once you have gathered your materials, follow these steps […]