Tip: this was somewhat mentioned here in the thread, but you can use at least a 50 foot modified network cable to run this with the head very far from the actual radio.
For example, I'm using this in my home, I have an antenna on the roof that comes down with a 50 foot lmr400 to a polyphaser attached to service ground and then into the basement. I have the business end of the radio connected to the end of that antenna lead right as soon as it comes into the basement, then the 50' modified network cable running across the basement up into my office where the head unit is. Power to the radio is running off a 900 watt, 12v server power supply (KG-1000g shows 12.34v upon startup)...that's controlled by a wifi outlet to turn on/off the power supply remotely without having to go down into the basement.