On 2/27/2010 4:53 PM, Joe wrote: > > > Oz, in DFW wrote: > > > > Make sure you use twisted pair. Station wire like that use to wire > > houses is often not twisted. Ethernet cable is good and has a high > > twist pitch - better for this application. > > > I wonder if CAT 6 would be better than CAT5 due to the difference in > twist? > > Joe > > I'm not sure it will matter much. Mostly I think a tight twist will provide better isolation at the higher frequencies. Cross connect and some multipair telephone cable can have as little as two twists per foot. This is an appreciable portion of a wavelength at UHF and is likely to offer lower common mode value.
The twist rates of CAT5 and CAT6 are high enough that I suspect they are substantially similar in this application. Oz, in DFW -- mailto:[email protected] Oz POB 93167 Southlake, TX 76092 (Near DFW Airport)
