The full indoor version el series microwave links are designed for long and medium distance application, stl’s backbones, multi-hop systems, and other broadcast requirements to deliver with broadcast-quality one video and up to four high-quality audio channels. The tv link is available from 5,2 up to 14,5 GHz in a single 1-unit rack that allows a fast and easy integration with existing telecommunication systems in the full respect of the levels of the modulation and of the impedance. Separate rack is available for if modulator and if demodulator. Output power up to 1w and several alarms to check the amplifier working condition are available. The excellent spectral purity and the special design of the conversion oscillators endow these units with an excellent signal to noise ratio both in transmission and reception. The outdoor version radio links are composed by two units; an indoor unit (IUD) supplied in a single 1U rack containing the mo/demodulator stage, and an outdoor unit (ODU) in aerial head containing shf part. The outdoor ehad is connected to the indoor console by means of a single coaxial cable to lead both the L.F. signal and the power supply. For heavy duty application, a series of external solid-state amplifiers in a single 1U rack can be connected to every microwave transmitter.