On Thu, 2011-03-17 at 18:59 -0400, Bob Ammerman wrote: > The TW signal also has digital stuff that has to be preserved at a single= =20 > location in the house (the only place they have a digital cable box) we a= lso=20 > have to preserve the PowerLink internet signal, but that could probably b= e=20 > tapped off before the combiner. >=20 > The simple solution here would seem to be to run a second coax to each TV= =20 > location. Unfortunately this would be very difficult as the house is an o= ld=20 > rambling 3 story farmhouse with about 9 TVs (for a 7 person family!). >=20 > What I was hoping to find was a black box that would shift the OTA signal= s=20 > up above the range used by TW, allowing the two signals to be combined on= =20 > the same coax without interference. Another black box at the set would do= wn=20 > shift the OTA stuff back to where it came from. Unfortunately that solution (if you ever found a box) would likely never work well.=20 Being an old house, the Coax is likely RG59, which is tolerable at lower frequencies, marginal at the upper end of what TW sends, and pretty much useless anywhere above that. If you want to shift one set of signals above the "normal" range you're in the area where RG59 is no longer much of a signal carrier. RG6 is designed for much wider bandwidth (up to about 2GHz). If the house is wired with that (VERY unlikely, in my area houses started to be wired with that only about 10 years ago) then you have a chance it might work (but even then, attenuation at > 1GHz is pretty high). TTYL --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .