Translator - Crown FM30 User Manual

1.2.4 Translator

A receiver configuration (FM150R, for example) replaces the audio processor/stereo gen-
erator board with a receiver module. This added feature makes the FM30, FM150, and
FM300 ideal for translator service in terrestrial-fed networks. These networks represent a
popular and effective way to increase your broadcasting coverage. Translators, acting as
repeater emitters, are necessary links in this chain of events.
Traditionally, network engineers have relied on multiple steps and multiple pieces of equip-
ment to accomplish the task. Others have integrated the translator function (receiver and
exciter) to feed an amplifier. Crown, on the other hand, starts with an integrated transmitter
and adds a solid-state Receiver Module to form the ideal translator.
Illustration 1–3 Crown's Integrated Translator
This option enables RF in and RF out on any of Crown's FM series of transmitters. In addi-
tion, the module supplies a composite output to the RF exciter portion of the transmitter.
From here, the signal is brought to full power by the built-in power amplifier for retransmis-
sion. The Receiver Module has been specifically designed to handle SCA channel output up
to 100 kHz for audio and high-speed data.
FSK ID programming is built-in to ensure compliance with FCC regulations regarding the
on-air identification of translators. Simply specify the call sign of the repeater station when
ordering. Should you need to change the location of the translator, replacement FSK chips
are available. The Receiver Module option should be ordered at the time of initial transmitter
purchase. However, an option kit is available for field converting existing Crown units.
In the translator configuration there are differences in the function of the front panel, see
Section 3 for a description.
Getting Acquainted 1-5