Williams Sound
®
Helping People Hear
16
R
ECEIVER
F
REQUENCY
C
HANGE
I
NSTRUCTIONS
Tuning for the R7, R30, R31, and R32 receivers is determined by a single tuning coil. In the
R7-4 and R7-6, one coil is assigned to each switch position. See the following 6 figures and
receiver types to locate the coils to be adjusted. A plastic tuning wrench (PLT 005) will be
needed to adjust these receiver tuning coils.
Most Williams Sound single channel Receivers are set at the factory to 72.9 MHz. The
standard four-channel receivers (R7-4NA), Channels 1-4, are usually set to frequencies 72.1,
72.5, 72.9, 75.7 MHz respectively. The standard six-channel receivers (R7-6N), channels 1-
6, are set to frequencies 72.1, 72.5, 72.9, 75.7, 74.7 and 75.3 MHz respectively.
The Receiver must be tuned with a weak and somewhat noisy signal. If tuned too close
to the transmitter, with a strong signal, the most accurate tuning of the receiver is not
possible.
To Change the Frequency to Another Channel:
Step 1:
Set the transmitter to the channel desired and remove the antenna.
Step 2:
Connect an audio source to the transmitter such as a CD or cassette player or
microphone.
Step 3:
Move the receiver about 25 feet away from the transmitter to set the tuning.
Step 4:
Open the battery compartment, then lift up on the battery door to open the back
of the receiver. This will expose the tuning coil or coils to be adjusted.
IC
0
1
1
1
2
3
4
2
12
1
2
3
4
6
5
R30
R- 31
R-32
R7Y
R7- 4
R7- 6
TUNING COIL
Ferrite Tuning
"Slug"
Summary of Contents for PPA VPE
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