The 6GT2391-0AH30 is a 3-meter pre-assembled coaxial antenna cable for SIMATIC RF200 and RF300 HF RFID systems (13.56 MHz). It uses 2YCC11Y coax with a black PUR jacket, terminated with an M8 straight plug at one end and an M8 angled plug at the other. Both connectors are 50Ω impedance, matching the RF200/RF300 reader and antenna ports.

Why one straight and one angled M8 plug?

The mixed connector geometry solves a clearance problem at one end of the cable. An M8 straight plug extends roughly 30mm from the port before the cable bends; an angled plug exits at 90 degrees and needs only about 12mm of headroom. The typical installation has the angled end plugged into the port with the tighter clearance—a reader mounted behind a cover, an antenna positioned close to a machine frame member—and the straight end at the port with ample room. If both ends have tight clearance, Siemens offers a straight-to-straight variant; if both need the low profile, check the RF200/RF300 catalog for an angled-to-angled option.

How does this HF antenna cable differ from the UHF RF600 antenna cables?

Two fundamental differences. Frequency: RF200/RF300 operates at 13.56 MHz (HF), where cable loss is far less critical than at the 860–960 MHz UHF band used by RF600. A 3-meter run at 13.56 MHz introduces negligible insertion loss regardless of coax type—the cable choice is driven by mechanical fit and flexibility, not by attenuation budgeting. Connector type: RF200/RF300 uses M8 connectors; RF600 uses R-TNC connectors. The two are not interchangeable. Do not attempt to adapt an M8 antenna cable to an R-TNC reader—the impedance match and mechanical fit are specific to each system.