Additionally, if the back shell of the connector is not shielded, external interference can enter the coaxial lines where they separate into pins in the connector.
Some coaxial lines use air (or some other gas) and have spacers to keep the inner conductor from touching the shield.
All micro-copies, after being Xeroxed, are carried over coaxial lines to file-repositories, generally subsurface and away from population centers, in case of a major war.
A balanced feedline exhibits less loss than coaxial line in the presence of high SWR, so a tuner is primarily used with the former.
Cable television signals use only a portion of the bandwidth available over coaxial lines.
Ethernet used its cabling as radio "ether" by simply broadcasting packets over a thick coaxial line.
A similar technique is to use a slotted waveguide or slotted coaxial line to directly measure the wavelength.
Nowadays, satellite companies install a dish on the roof and use existing coaxial lines installed by a cable company to get television signals inside the building.
A Continental Transmitter fed three inch coaxial line into a four bay Shiveley antenna.
A use for this is the combination of a symmetric dipole antenna with a coaxial line.