On Fri, 26 Feb 2010, JOHN MACKEY wrote: > I have a odd situation where I need to run long audio cables between > my repeater controller and two repeaters. In this case, the repeater > controller will be connected to 2 repeaters in the same cabinette. > The other two repeaters will connected thru about 140 feet of wiring > to the other side of a building. I am thinking of using balanced > audio wires for the long runs and using Henry Engineeering boxes to > convert between balanced/un-balanced at each end. > > Anyone ever done long audio runs like this? Am I over engineering it > and unbalanced will be good enough?
unbal to bal is a good idea. It isn't over engineering as Motorola did this for years with radio accessories. And they only had to go 17 feet. Getting rid of common-mode interference (ground loops) is worth it. -- Kris Kirby, KE4AHR Disinformation Analyst
