FEELDO AUTO Accessories INC.
The F connector is inexpensive, yet has good 75 impedance match up
to 1 GHz and has usable bandwidth up to several GHz. One reason for
its low cost is that it uses the solid conductor (center wire) of
the specified types of coaxial cable as the pin of the male
connector. This design is subject to the surface properties of the
inner conductor (which must be solid wire) and is not corrosion
resistant, hence water proof versions are needed for outside use
(for example, on aerials). The male connector body is typically
crimped, or sometimes screwed, onto the exposed outer braid. The
cable industry standard now is to use compression fittings. Female
connectors have a 3/8-32 UNEF thread (9.525mm diameter). Most male
connectors have a matching threaded connecting ring, though push-on
versions are also available. Push-on F connector ends provide poor
shielding against airborne signals (e.g., a nearby TV transmitter
will interfere with a CATV station).