used in INMARSAT Coast Earth Stations. The function of the Pilot Receivers is to search for and identify the pilot frequency present  

at the 70 MHz IF output of the L and C Band Down converters.  The uncorrected pilot signals from the L or C bands are feed to the input of the Pilot Receiver. A frequency synthesizer is used for the first down conversion local oscillator of the Pilot Receiver. The frequency of the synthesizer is adjustable in 5 KHz increments via a internal digi-switch, calibrated in frequency which will correspond 

to the assigned pilot frequency. The synthesizer output frequency is derived directly from a sub-harmonic of the station 10 MHz master

reference oscillator. The gain of each IF is amplifier stage is controlled by the ALC bias generated by a synchronous amplitude level

detector in the IF chain. If the signal drops below the high threshold, the following actions is taken: The 20 MHz VCXO is disconnected

The loop bandwidth control circuit is reset, the 10 second major fault timer is started and a pilot fault indication is initiated.

IF input: 60,75 to 89,75 MHz, Input Pilot level: -35dBm +/- 25dB, return loss 23dB. RF output 1200 MHz +/- 60 kHz Ouput level:

+22 dB, 50 OHMS unbalanced TNC female. Locked Frequency Error: 0 Hz. Frequency set by factory: 1 537653 MHz. (must be set

by the user) Weight : 25 kilos Power 220 volts AC. Power  ON/OFF, Lamp test Push Button, Loop Bandwidth Control ,AFC Bias, PLO

monitor, Pilot failure, PLL failure and Summary failure. This unit was tested and working according specifications.Operation and Maintenance Manual + Power cable included.    For advance INMARSAT users Only. I ship worldwide, except Cyprus, Russia and Ucrânia.