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.
One common problem, and also one of the easiest to fix, is a broken fly lead. A fly lead is simply the lead that you use to connect your TV to the antenna, plugging one end into the TV and the other into the antenna outlet on the wall.f your antenna is older than a few years, it might not be capable of effectively receiving a digital television signal and you will need to upgrade. Of course, you should have checked that you have a digital TV or a digital set top box first.