News & Technical Insights

Six 50 ohm interfaces cover the overwhelming majority of RF and microwave work. They differ in frequency ceiling, coupling method and power handling — and picking the smallest one that fits is usually the wrong instinct.

Micro-D and MIL-DTL-38999 solve different halves of the same problem. Micro-D wins on contact density per cubic centimetre; 38999 wins on shell integrity and environmental sealing. Most airborne systems end up using both, and the split is predictable.

IP67 and IP68 differ by one digit and a very large amount of engineering. The second digit describes continuous immersion, and the depth and duration are declared by the manufacturer — not fixed by the standard. Here is how to read the rating and where connectors actually fail.

Every circular connector is defined first by how it locks. Push-pull, bayonet and threaded systems trade mating speed against vibration security, sealing and contact density — and choosing the wrong one shows up later as intermittent faults or lost maintenance hours.