Check out the 5-core, and 6-core products from IXOS adn Extron. They are either 5 or 6 min RG6 cables providing 75ohm connectivity. We have been using the IXOS products for years. Use the solder on connections. Run howevermany 6-cores you need plus CAT5 for control or RS232.

[Link: extron.com]
http://www.ixoscable.com

On the IXOS site click on North Ameria, click on products, click on custom install.
It is XS110CL

Mike