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.
The most common type of antenna feeder used today is undoubtedly coaxial feeder or coax cable. Coax cable, often referred to as RF cable, offers advantages of convenience of use while being able to provide a good level of performance.oax cable or coaxial feeder is used in many applications where it is necessary to transfer radio frequency energy from one point to another. Possibly the most obvious use of coax cable is for domestic television down-leads, but it is widely used in many other areas as well.