There are two main types of heat pumps: geothermal heat pumps and air-source heat pumps. A geothermal heat pump draws the heat from the ground, while the air-source type pulls the heat from the air outside.
RF cables are a type of coaxial cable that is used to send radio frequency signals. RF cables are often used to send video information to a TV set. Identification. RF cables can be identified by the connectors at the end of the cables. RF cable connectors have a single pin that plugs into the RF input on a TV or other device and a threaded piece of metal around the connector that can be used to secure the cable to the RF input port. RF cables are commonly used in cable TV and Internet connections.
BUT my old Maganavox TVs (with coax input only) OK, so you are talking about RF and using F connectors. The thing about F connectors in general is that the bare center wire makes the contact, even the expensive snap-n-seal ones. So RG6 is the best to use because of the 18ga center conductor.