Feeder & Plugs (5a1 & 5a2)

 

Feeder

 

The cable used to connect antennas to receivers / transmitters is known as feeder.

 

Feeder is usually co-axial cable (like you see on the aerial lead on TV sets) – because the signal on the inner is screened by the outer braid which retains the signal in the cable.  

 

Occasionally “ribbon” or “twin” cable (two parallel wires in the same flat plastic sheath) are used.

 

 

 

Plugs

 

The plugs and sockets used for r.f. (radio frequencies) should be the correct type.

 

The braid of the coaxial cable must be correctly connected to minimise the r.f. signal getting into or out of the cable.  This means that the braid is connected to the outer of plugs and sockets so that the is a continuous screen.

 

The two most commonly used types of coaxial plugs are shown below.

 

 

The BNC Plug

 

 

 

 

 

 

The PL259 Plug

 

 

 

 

 

 

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