Futaba FU8A07903 Micro-Micro Square-Square Trainer Cable - Compatible with Futaba Transmitter Trainer Ports  [FU8A07903]

Product description and operation

This transmitter accessory is intended for wired trainer-mode linking between compatible Futaba radios. The Futaba FU8A07903 micro-micro square-square trainer cable provides a straightforward, low-profile connection to pair two Futaba-style trainer sockets without introducing extra electronics.

Typical use is instructor-led teaching and supervised practice sessions where direct control transfer is required. Both ends feature square-format plugs to fit matching trainer sockets and the cable functions as a simple, serviceable spare for transmitter setups.

Fitting is plug-and-play: insert each connector into the trainer socket on the two transmitters. If your manual advises it, ensure both radios are powered off when connecting or disconnecting, then confirm trainer mode is enabled on each device before active use.

The cable does not alter signal logic or stored programming; it merely establishes the physical link used by the radios' trainer functions. Keep the lead routed clear of moving parts and avoid excessive bending at the connector to retain reliable contact.