Terk's LF-30S is a wireless TV transmitter that could be a solution for getting a composite video signal from point A to point B in the event that cables aren't feasible, like sending a DVD player signal to a TV in the garage without moving the DVD player into the garage.

I found the LF-30S to be capable of transmitting a signal with success. There were limitations to its use, but overall it was a nice product. The review I did for the LF-30S was in 2005. The design has changed since then, but my review still applies to the more current form of the LF-30S because the actual transmission and reception of the wireless signal hasn't changed much, if at all, over the years.

Best Buy sells a multi-room version of the LF-30S. The key difference between the multi-room transmitter and the single-room version the capability to add receivers to the transmitter. The single-room transmitter only works with one receiver while the multi-room transmitter can work with up to three receivers.