The example of application "CryptOn" system in LMDS networks is ТРС "Trophy" (manufacturer - a company "TROPHY").
    In contrast to the cable TV networks, and also to the networks with application of MMDS, in LMDS networks a standard satellite analog tuner, equipped with the connector "DECODER" for connection of the decoder, is used to receive standard radio signal.
    The renewal of the coded television signals is fulfilled by decoders model DV-01. In this model sync pulses renewal is carried out in modified video signal of the image (In contrast to the decoders model DRA, where sync pulses renewal is implemented in a modified radio signal).

    When using MMDS for broadcasting the signal of the main station to the cable subnets there is a problem of unauthorized viewing of television channels, because they can be received from the air, bypassing the cable network.
    MMDS channels protection by the means of coding them at the transmitting station is connected with their decoding either by the subscriber decoder, which is set at the input of the television receiver or by the group decoder, which is set between the output of the receiving converter MMDS and cable subnet input.
    In the first case usage of the "CryptOn" system in MMDS is carried out similarly as in cable networks of collective television reception.

    Coding of TV channels in cable networks of collective TV reception is fulfilled by coders that are inserted in a loop break in signal transmission from receiving to transmitting terminal of the head-end station (Figure 1).

Figure 1. Connecting coders to the equipment of the head-end station of collective TV reception network.

    After coder creates a modified video signal a radio-frequency modulator of the video signal creates modified radio signal of TV image with levels, which is than transmitted to the collective TV reception network.