1.2 GHz FPV VRX Connector Modification

Considering the FPV screen has a single 3.5mm A/V input connector, running a pair of common A/V RCA cables for video and audio between the VRX and screen seemed a bit clunky.

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The lid was taken off the 1.2G receiver to see if a 3.5mm stereo socket could be mounted.

This stereo connector would provide video out and audio out via the one lead, and not two leads.

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A 3.5mm stereo socket would fit in between the RCA sockets, with +/- 0.5mm to spare either side.

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A hole was carefully marked up, and drilled out using a bench drill press.
Given the tight tolerances, don’t attempt this with a hand drill.

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3.5mm stereo socket was pre-prepared with wires for video out (Y) and audio out (W), and covered with heatshrink.
Ground connection would be achieved via the grounded case.

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It was easier to solder the yellow wire (video) to the video out RCA connector tab if the electrolytic capacitor was temporarily removed.

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With the 3.5mm stereo socket wired up, and lid back on, the 3.5mm socket does not prohibit the use of the original RCA connectors either side.

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Due to the simple nature of paralleling the connectors, either the RCAs can be used -or- the 3.5mm combined output, not both at the same time.

 
The single cable between the VRX and the screen is just a bit “nicer” than a dual cable.
🙂