Belling-Lee
The
Belling-Lee connector or
IEC 169-2 connector, more often simply known as
TV aerial plug or
connector, is the traditional for and / -. It is the oldest coaxial still commonly used in consumer devices today. It connects a receiver to a terrestrial / roof , antenna amplifier, or network, via a .
It was invented at Belling & Lee Ltd in Enfield, , around 1922, at the time of the first BBC broadcasts. It was originally only intended for broadcasts, where accurate impedance matching of an antenna connector is not a concern.
[] Belling-Lee vs other connectors
Unlike the coaxial used today for the same purpose in North America, the IEC 60169-2 connector is
not matched to the 75-ohm of the antenna cable used. The lack of causes in the cable, leading to noticeable signal distortion on and frequencies (but not MW or ).
- The IEC-169-2 connector is recognised as a source of signal distortion and has become a particular concern with digital signal reception, specifically UHF HDTV.
- (digital radio) and other reception modes are not as severely affected by the impedance matching issue, so only HDTV and satellite reception systems are encouraged to use the .
- In spite of being somewhat unsuitable for modern analogue VHF and UHF TV frequencies, due to industrial inertia, the Belling Lee connector is still used today as a TV signal reception connector.
- In Europe and the Americas this connector is not used to connect antennas. The more electrically suitable 75-ohm is standard. However, the obsolete receiver used a Belling Lee connector for the LNB feed
Bookmarks