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PPA R38 FM Receiver PPA R38 FM Receiver
Receiver Overview
Thank you for purchasing the PPA R38 FM Receiver.
Much like a miniature radio station, a Williams AV FM transmitter
broadcasts audio over an FM radio signal. Receivers are used
to pick up the broadcast up to 1000 feet away, depending on
environmental conditions. The system helps large or small groups
overcome background noise and distance to clearly hear the
speaker.
The Williams AV FM T55, PPA T45, PPA T46, or PPA T27 FM
transmitters broadcast voice and/or audio programs on one of 17
available channels, 72-76 MHz. Listeners use the PPA R38 receiver
equipped with headphones, earphones, or neckloops to hear the
broadcast.
The PPA R38 has an easy-to-read high-resolution OLED display.
The unit also has push-button on/o controls, settings lock and
many other features.
To avoid diculties, please read through these instructions, and
keep them for reference.
Main Features
• OLED high-resolution screen - easy to read and provides
a quick view of receiver status.
• Sleep/Auto-O Feature saves 80% power!*
• All user settings are accessible via the on-screen menu –
including all 17 wideband channels.
• Stereo headphone jack
• Can use rechargeable or non-rechargeable batteries
• Digital volume control
• 4-step battery level indication
• Display shows channel number or frequency
• Step/seek function allows user to increment channel
manually, or seek to the next active channel
• Squelch Adjustment
*Up to 80% less power consumption while in sleep mode. Total
battery life dependent on device usage and user settings such as
screen time-out.
Feature Detail
CHANNEL STEP/SEEK
Step: If the listener knows what channel or frequency they need to
be on, they can change to that channel by stepping through each
channel in the menu. See Step 1 under “Basic Settings” on page
6.
Seek: If the listener does not know what channel or frequency
they need to be on, they can seek through actively-broadcasting
channels (similar to the seek function on a car radio). See Step 1
under “Basic Settings” on page 6.
POWER-SAVE MODES (IN ORDER OF OCCURRENCE):
1. DISPLAY TIME OUT
The display screen has a timer that will turn the screen o after
a period with no button pushes. This period can be adjusted in
the menu between 5, 30, or 60 seconds. After the screen turns
o, The receiver still continues to receive and produce audio after
the display screen turns o. This feature, in conjunction with the
sleep mode/auto o, serve to save battery life. See Step 5 under
“Advanced Settings” on page 7.
2. SLEEP MODE
After approximately 6 minutes with no RF signal on the current
channel, the receiver goes into sleep mode and starts a sleep timer.
During sleep mode, the receiver consumes approximately 80% less
power. Periodically it checks for RF signal on the current channel. If
it finds signal on the current channel, it will wake up, produce audio,
and reset the sleep timer. Any button push during sleep mode will
also wake the receiver up and reset the sleep timer.
During sleep mode, the receiver will not be looking for signal on
any other channel than the one the receiver is set to. So, it will not
find another transmitter on a dierent channel, or wake up simply
because there is RF signal present within the 72-76MHz band. It
will only wake up if there is a strong broadcast on the channel/
frequency the receiver is set to.
3. AUTOOFF
After approximately 2 hours with no RF signal on the current channel,
the receiver will turn itself o completely. Once this happens, it
cannot wake up. The user must power the unit ON again with the
power button.
SQUELCH
When low RF signal is present from the transmitter, or if the receiver
is getting too far away from the transmitter, the receiver may produce
static or noisy audio. If the signal is low enough, the receiver will
mute the audio completely. The point at which the receiver mutes
the audio is adjustable. See Step 2 under “Advanced Settings” on
page 7.
SOFT AUDIO TURN-ON
When powered on, or if the channel is changed, the receiver will
mute the audio, then gradually bring the audio level up to the
current volume setting. This setting can either be the last volume
used, or a specific volume level. See “Volume Level at Turn On”
under ”Hidden Settings” on page 7.
Initial Setup
1. Open the battery compartment. Slide the battery selection
switch to the correct position for the type of batteries that will
be used. Use Alkaline for non-rechargeable batteries, NiMH for
rechargeable NiMH batteries (only). (Figure. A)
IMPORTANT: If the battery switch is not in the correct position, damage
may be caused to the unit. Alkaline batteries cannot be recharged.
2. Install the AA batteries. Be sure to observe proper polarity
(+/-). Damage due to improper battery installation may void
the warranty on the product. The battery icon on the display
and the Power On LED on top of the unit will flash when the
batteries are getting low; you may continue to use the receiver
until it quits operating, then replace or recharge the batteries.
(Figure. A)
Figure A: Battery Compartment
ALKALINE/
NiMH SWITCH
CAUTION: RECHARGE
ONLY NiMH BATTERIES
BATTERY REMOVAL
FABRIC STRIP
3. Plug in an earphone, headphone, or neckloop using the
3.5mm jack on the top of the receiver. Note that the earphone,
headphone or neckloop cable is also the receiving antenna.
(Figure B)
Figure B: Headphone Jack
3.5mm STEREO
EARPHONE/
HEADPHONE
JACK
4. To install the belt clip on the rear of the R38, position the belt
clip on the back of transmitter. Turn the belt clip 180˚ left or right
to secure the clip. The transmitter can now be clipped onto a
belt. To remove, turn the belt clip 180˚ so the open end of the
clip points up, and gently pull the belt clip o. (Figure F)
Figure C: Belt Clip Installation
