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.
1 This is usually determined by the outputs and inputs available on the DVD Recorder and the TV. 2  If you have an older TV that only accepts RF (Coaxial) input, then you would connect the RF output (a coaxial cable) from your TV source (in my case a Cable Box) to the RF input on the DVD Recorder. To use S-Video and RCA audio cables: Plug in the S-Video cable to the S-Video output of the TV source. 2  Plug in the S-Video cable to the S-Video input on the DVD Recorder. 3  Next, connect the RCA audio cable to the output on the TV source and the input on the DVD Recorder.