What is a Motorola mx-300?

What is a Motorola mx-300?

The MX-300 was a handheld radio , developed by Motorola in 1975. Many different variants of this radio were developed, incuding VHF, UHF and SHF versions, ruggedized versions, crystal operated channels, versions with a frequency synthesizer, and optional Digital Voice Encryption .

What is the mx300-r socket used for?

On the ruggedized model (MX300-R) it is covered by a protective rubber flap. The socket is used for the connection of a range of microphone/speaker and other accessories. On versions with built-in digital encryption, this socket is also used for connecting the key variable loader.

What is the mx300-r made of?

The outer ‘skin’ of this model is made of rubber, but as it is close to 40 years old now, most of the rubber has become stiff and brittle. The MX300-R was developed especially for military use and special operations. It is significantly different from the other MX300 models.