Remote start/stop control options for Sony F3 camera

Gear

ZephyrCan I fly my Alexa or RED on a Zephyr?389

Master SeriesIs a used Master Series rig worth buying as a first big rig?191

BFDHow do I power my BFD receiver from my camera or sled?186

VoltCan I retrofit a Volt onto my existing sled or gimbal?168

ArtemisHow do I power my camera and accessories from an Artemis sled?166

MDRWhere can I mount my Preston MDR on my rig?143

ModulusIs there a Modulus option for HD wireless video?141

G-70Will my G-70 fit my vest, gimbal or sled?126

FI+ZCan I control iris and zoom wirelessly, not just focus?60

HU3Where can I get my HU3 repaired, refurbished or repainted?60

CineLiveHow do I pack and case my CineLive rig for transport?54

G-70XHow does the G-70X compare to Pro Titan, Xarm and other arms?46

Trinity 2Is Trinity 2 SUP 3.0 firmware safe to install or buggy?46

Ultra VestWhich vest should I choose for my body size, comfort and operator type?39

2011Cameras (Film/Video/HD) forum

15 years old. Gear and prices may have changed since.

The F3 camera has a remote control connector on the back intended for use with a Sony control panel that includes record control functionality.
The remote connector uses a Hirose MXR-8P connector type, which has been verified on the camera itself.
Remote control of F3 recording via the rear connector requires serial communication protocol rather than simple circuit closure, making basic relay-based cables ineffective.
The included DV remote control can be mounted on top of a Preston or Bartech controller using velcro as a practical workaround.
When using an external recorder like the NanoFlash, the recorder's own remote interface can provide independent run/stop control separate from the camera's internal recorder.
Controlling the F3 remotely while using internal SxS card recording proved to be a technical dead-end despite multiple attempts by experienced users to develop a solution.

The serial communication protocol required for the F3 remote connector was never fully documented or reverse-engineered during the discussion period.
No working third-party remote start/stop cable was successfully developed as of the final updates in this thread.
Solutions depend on the recording workflow - external recorder solutions differ from internal card recording scenarios.
The discussion spans 2011, so connector availability and modern alternatives are unknown.