Crown Low Power Transmitters - Crown Broadcast

3.4 Input Gain Switches
The “+6 dB” and “+12 dB” slide switches set audio input sensitivity according to
the following table.
Nominal Input Switches
Sensitivity +6 dB +12 dB
+10 dBm Down Down
+4 dBm Up Down
-2 dBm Down Up
-8 dBm Up Up
Illustration 3–4 Input Gain Switches
Find, experimentally, the combination of Input Gain switch settings that will bring
the Wideband gain-reduction indicator to mid scale for “normal” level program
material. The audio processor will accommodate a fairly wide range of input levels
with no degradation of audio quality.
3.5 Processing Control
Two factors contribute to the setting of the Processing control: program material
and personal taste. For most program material, a setting in the range of 40 to 70
provides good program density. For the classical music purist, who might prefer
preservation of music dynamics over density, 10 to 40 is a good range. The audio
will be heavily processed in the 70 to 100 range.
If the program source is already well processed, as might be the case with a satellite
feed, set the Processing to “0” or “10”.
3.6 Stereo-Mono Switch
The Stereo-Mono slide switch selects the transmission mode. In Mono, feed audio
only to the left channel. Although right-channel audio will not be heard as audio
modulation, it will affect the audio processing.
3–6 FM30/100/250 User's Manual