We do it the easy way. I just bring along a three port tV divider, two long sections of RG cable, and one short RG cable.
This allows me to hook up the three port TV divider with the short RG cable going to the pedestal, one of the long RG cables to the CABLE TV outside port, and the other long RG cable gets throwed under the trailer. With this setup we can use our 22-inch VIZIO HDTV outside under the awning sitting on a table hooked up to the RG cable that was throwed under the trailer...
Roy Ken