L & W Sports Communications RefAudio Pro User manual

By L & W Sports Communications Pty Ltd
User Manual

1. General Information
RefAudio Pro is a full duplex (hands free radio) develop by L & W Sports Communications. It
is a high quality compact radio for use in sports environments and has multiple applications
across a wide range of industrial and commercial areas.
1.2 Main Features
Full duplex open communication between 5 users (up to 10 users in RefAudio Pro
10).
Unlimited number of listeners
24 separate channels and Software upgradable
Secure transmissions on 900Mhz frequency
Transmissions range up to 900m line of sight
Clear sound quality and noise cancelling
Up to 10 hours function battery life
Water resistant for outdoors use
2. Controls and Indicators

3. How to use
3.1 Power ON/Off
Press and hold the power button for 3 seconds to turn the unit on. The LCD display lights up and
shows the selected volume and basic radio status levels. This is known as the HOME screen.
To turn off, press the power button until the letters “OF” appear then release. The radio will shut
down.
3.2 Group Selection
Press and hold the MODE button until the “grp” indicator flashes in the LCD screen. Select the Group
number 0-24 by pressing the “” and “”on the left hand side of the radio (volume buttons).
Release all the buttons and the screen will revert to the HOME screen.
All radios need to have the same group number to be able to communicate with in other in the
group.
3.3 ID Selection
In a group, each radio must have a different ID starting at “00” to “99”. The “00” radio becomes the
“MASTER” radio and every group must have a master radio. The words Master and Talk will appear
in the LCD screen next to the volume number on the home screen.
To set each radio in the group, press and hold the MODE button until the “grp” flashes. Press the
mode button again and the “ID” symbol will flash. Use the and buttons on the side of the radio
to give each radio an ID between “01” and “04”. Release all the buttons and the radio will be set on
that selected “ID”. Any radio with an “ID” “05” to “99” will be receive only radios.
Note that in the RefAudio Pro 10 model, user ID “00 to “09” will be talk radios as up to 10 users are
allocated in this model. User ID “10 to “99” will be listener radios.
3.4 Volume Up /Down
Press the button to increase the volume and the button to reduce the volume. There are 6
volume levels and the volume may be adjusted at any time during use.
3.5 Side Tone On / Off
The RefAudio Pro radio has a side tone function that allows the user to hear what is being
transmitted.
Press and hold the MODE button until the “GRP” symbol on the LCD screen is blinking. Press the
mode button twice until the “SO” symbol appears in the LCD screen. “SO” indicates that the side
tone function is on. To turn off side tone when the “SO” symbol is flashing, use the or buttons
and the “SF” symbol will appear. Release all buttons and the radio will reset to the home screen.
The speaker off symbol will be shown on the home screen. To turn on side tone repeat the
process.
3.6 Microphone off. Receive only setting.
The radio can be used in receive only mode. When this is required press and hold the MODE button
until the “GRP” symbol on the LCD screen is blinking. Press the mode button 3 times until the “PO”
symbol appears in the LCD screen. To use receive only mode, use the and buttons until the
“PF” symbol appears on the screen. Release all buttons and the radio will reset to the HOME screen.
To return the radio to full function, repeat the steps until the symbol “PO” is on the display.
3.7 Microphone Sensitivity Level Control
In situations where loud external noise exists, you can reduce the sensitivity level of the microphone.
Press and hold the MODE button until the “GRP” symbol on the LCD screen is blinking. Then press
the MODE button 4 times until the symbol C4 appears in the LCD Display. Use the and buttons
to adjust the level. C1 is the lowest microphone level and C5 is at the highest level.

3.8 Audio Output High / Low
If a higher output is required, for example in very noisy environments, the RefAudio Pro radio has an
increased output setting.
Press and hold the MODE button until the “GRP” symbol on the LCD screen is blinking. Then press
the MODE button 5 times until the symbol “UL” appears in the LCD Display. Use the and 
buttons to adjust the level to “UH” for increased output. Note. When used in the UH mode the user
may experience sound distortion or hearing damage. Ensure correct volume levels are used.
3.9 Lock Mode
The radio can be placed into lock mode if required to prevent any unwanted changes to the radio.
This can be achieved by simultaneously pressing the Mode button and the RefAudio Pro button on
the front of the radio until the letters “LC”appear on the screen. In the lock mode function only the
volume of the radio can be adjusted. If the radio is turned off the lock mode will remain until the
unlock sequence takes place. To unlock the radio repeat the locking process.
4 Battery
The rechargeable Lion battery 3.7V, 1,100mAh is installed in the device. Plug the USB charging cable
into the USB port and connect to the A/C adapter or any USB charging device. The charging LED on
the right hand side top corner of the radio will blink during charging and will turn off when the
battery is fully charged.

Specifications
ITEM
SPECIFICATION
Radio Frequency Type
ISM 915MHz ~ 928MHz
Type
Wireless Microphone/Receiver Unit
Radio Interface
ISM 900MHz: FSK Modulation with Frequency Hopping
Output Power: Class 1(100mW)
Voice Codec
16bit/16KHz
Tx Max Output Power
100mW
Rx Sensitivity
-95dBm
Voice Latency
< 35ms
Num. of Frequency Channel
24 Groups
Channel Spacing
500Khz
Battery
Li-ion Battery @3.7V/ TBD 1100mA
Antenna
Internal Helical Antenna
Talk Time
10hr Typ.
Power Consumption
Avg. 100mA at Class 1(100mW)
Distance Range(LOS)
1000M @ Class 1
Frequency response
50 Hz ~ 7 kHz
Maximum operation users
5person (include Master device)
Dimension / Weight
98mm(H) x 49mm(W) x 17mm(D) / 88g
LED Display
Status LED, Talk LED, Charging LED
Low Battery Alert
Audible signal (Beep)