Rf Tuning Adjustments; Receiver Frequency Selection - Crown FM500 User Manual

2.4.2

RF Tuning Adjustments

All the RF stages are broadband to cover the 88 to 108 MHz broadcast band. The
RF amplifier stages require no tuning.
2.5

Receiver Frequency Selection

If you have a transmitter equipped with the receiver option, you will need to set
the receiving or incoming frequency.
1. With the top cover removed, locate the receiver module and the two switches
(labeled SW1 and SW2).
2. Use the table on the following pages to set the switches for the desired
incoming frequency.
3. After setting the frequency, return to section 2.3.1 to set the modulation
compensator.
Frequency Selection
Switches SW1 & SW2
Stereo
Receiver
Generator
Module
Audio Input
High Band
High
Expand
2
Wide Band
-6
-12 +6 dB
-18
Low
Input Gain
Illustration 2–8 Receiver Module Switches
Installation
RF IN
RF Exciter
2 10
RF Power
SWR
Compress
20
ALC
PA DC Volts
PA DC Amps
PA Temperature
Supply DC Volts
+12 dB
Voltmeter
Processing
®
Modulation Carrier
Fault
SWR Over
Lock 100
Input
90
PA DC
80
PA Temp 70
60
Power
Stereo 50
40
30
20
Pilot
Mono RF Output
FM500
FM BROADCAST TRANSMITTER
2–7