At this point you have set the transmitting channel number in three different
places. The XMTR CHANNEL and XMTR TUNE on the Transmitter RF
Head and XMTR CHANNEL on the Receiver RF Head.
STEP 5.
Continue to refer to Fold-Out 12 while reading this step.
Set the Receiver RCVR CHANNEL indicator (Item 10) to the assigned
receiver channel number by turning the RCVR CHANNEL control (Item 9)
until the assigned receiver channel number appears in the indicator window.
Set the Receiver RCVR CHANNEL indicator (Item 13) to the same receiver
channel number by turning the RCVR SIG control (Item 12) until the channel
number appears in the indicator window.
At this point you should check to see that the receiver frequency is separated
by 33 channels from the transmitter frequency. This is necessary to prevent
transmitter output from entering the receiver and degrading its sensitivity or
causing interference. This will result because transmission and reception are
accomplished with the same antenna.
Receiver overload charts are provided in Chapter 2 of TM 11-5820-540-12 if
additional information is needed regarding this subject.
STEP 6.
Close Fold-Out 12 and open Fold-Out 11. Refer to Fold-Out 11 while reading
this step.
After ensuring that the radio set is connected to a voltage source no higher
than 120 VAC, turn the transmitter AC POWER switch (Item 1) to the
ON/RESET position. This switch also acts as a circuit protection device for
the transmitter.
When the AC POWER switch is operated to ON/RESET the following things
should occur.
(a) Centrifugal fan starts.
(b) AC POWER lamp lights (Item 2).
(c) LOW POWER lamp lights (Item 3).
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