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A test setup can look correct and still give a misleading result. A common situation in RF labs is that a new module arrives with an SMA port, while the available test cable or instrument uses BNC. The connection problem seems simple: find an adapter,...

A test cable can look correct, mate correctly, and still create a measurement problem. This happens often when a BNC interface is connected to another RF standard without checking the details behind the connector. The mechanical fit may be acceptable, but impedance, frequency range, and...

The original SMA cable was only 150 mm. The production version needed 500 mm because the antenna had to be moved outside the enclosure. The connector was still SMA, the impedance was still 50 ohms, and the cable looked identical from the outside. The RF...

A customer sends a drawing with only one note: “SMA female connector required.” For a supplier, that description is usually not enough. The interface name tells only part of the story. The final connector may be installed on a PCB, fixed to...

A connector can pass a basic continuity test and still create problems after it enters a finished enclosure. This happens often with panel-mounted RF ports. The connector fits the hole, the SMA interface mates correctly, and the first bench test looks normal. The issue appears...

A connector can look correct on the drawing and still create problems after production starts. A common situation in RF sourcing is this: the prototype cable assembly passes continuity testing, the SMA interface mates normally, and the customer approves the sample. Several weeks later, the...

A cable assembly can pass continuity and still be the wrong RF part. This happens more often than many buyers expect. The connector mates correctly, the cable looks similar to the previous order, and the first sample works on the bench. Problems usually appear later...

A WiFi antenna cable can look correct and still cause trouble after installation. The connector may mate. The continuity test may pass. The antenna may even work during a short bench test. Then the real device goes into a metal enclosure, the cable is bent...

A cable assembly can pass continuity and still be the wrong RF part. That is where many antenna projects go sideways. The connector screws on. The cable length looks close. The first sample may even work during a quick bench check. Then the same coax...

A cable can pass a continuity test and still be the wrong communication cable for an RF signal path. That is where many sourcing problems begin. The drawing says “cable.” The buyer searches for a communication cable. The supplier asks for length and connector type....

A cable assembly can look correct on a drawing and still fail after it reaches production. A common situation happens during RF sourcing. The connector interface is correct, the cable length matches the requirement, and the first sample passes a basic continuity check. Then the...

A cable assembly may look correct and still fail after it enters production. This happens with RF systems more often than expected. During sample testing, the cable is usually short, placed on an open bench, and connected under ideal conditions. The signal looks normal, the...