Earlier we reviewed RF connector types commonly used in ham radio applications.
There are also a number of common electronic connectors used in amateur radio that you should be familiar with to have a working knowledge of equipment interconnect and interfacing.
Presented below are eight common non-RF connector types. Some are for power but most carry audio or control signals between devices and equipment.
D-subminiature connector commonly called D-sub. Name derived from its general “D” shape with one side longer than the other.
Five shell sizes 1-5 (A thru E). Standard and high density for all five shell sizes. 9-50pins standard, 15-78pins HD.
Ham radio general purpose use such as control interface; also for serial (RS-232) communication plus video between PC and monitor.
An old, simple, and cheap design still widely used for audio and video signals. Sometimes called phono plug and jack.
Typically used for L and R stereo audio channels with white and red color coding.
Phone, 1/8″ (3.5mm) and 1/4″ (6.35mm)
Another old and reliable design still widely used for audio signals.
1/4 standard and 1/8 mini plug/jack sizes are the most common.
Two wires for mono signals, three for stereo. A four pole version is occasionally used with two ring contacts. In ham radio use this might be a HT with speaker, mic and PTT switch; three functions sharing a common fourth terminal.
DIN is an acronym for Deutsches Institut für Normung, the organization for German national standards. The DIN standard encompasses a wide variety of electrical and electronic connectors. As used in ham radio the specific subset of Mini-DIN is what we normally encounter.
The Mini-DIN is 9.5mm diameter (3/8″) and can range from 3 to 8 pins with unique arrangements:
Used on many modern transceivers for audio, data and control interface. Example below:
Modular (RJ45, RJ11) Continue reading