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  1. Hello all, I'm about to fabricate an expanded and this time consistently color-coded set of audio cables (length matching jacket color). The primary use is live location work around the US Capitol - lots of hallways, rotundas, etc. This time, while making up individual XLR-terminated audio cables, I am also going to take an 'umbillical approach' between fiber interconnect box, camera position and correspondent position (which is up to 25 feet from camera, but rarely more than 12 feet away from the lens). Traditionally, the signals between these 3 locations include mic audio, phone audio (IFB), and HD-SDI signals, using mini-RG59 cables. I would like to experiment, cautiously, with including power into the umbillical - distributing final power to the correspondent position for USB devices (5v DC) and IFB components (9v DC @ aprox 200mA). Can anyone predict if this can be done without risk of audio interference, and if so, would it be best to send out the power first @ 120 volts (say via 18/3 cable, minimal current), stepping it down at the end of the umbillical, OR first doing low voltage conversion and then distributing power via low voltage wiring? If a mockup shows a clean and reliable set of signals, I will bring all cables inside a common Techflex housing. The back story : US networks have now stripped almost ALL DC live crews down to single operator, so that this proposed equipment refinement will make life a little easier (one cable set instead of 2) - faster plug'n play, less taping down to the marble floors, and less entanglement with other live crew's cable runs, etc. I am proposing to use Canare L-4E5C both inside the Techflex/umbillical environment and outside of it. Grant.
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