User's Manual
Digital Belt-Pack Transmitter
Rio Rancho, NM
9
Selecting Frequency
The setup screen for frequency selection offers two 
ways to browse the available frequencies.
Frequency groups are also able to be received via IR 
(Inrared) port sync. The group options are set by the 
receiver, and will show at the bottom of the screen as 
No Grp, Grp x, Grp w, Grp v, or Grp u.
Use the MENU/SEL button to toggle between options 
and UP and DOWN arrows to adjust.
Gain
Freq.
ProgSw
Rolloff
Freq
Grp x
628.200
Freq
Grp x
628.200
Selecting Programmable Switch Functions
The programmable switch on the top panel can be con-
figured using the menu to provide several functions:
•  (none) - disables the switch
•  Mute - mutes the audio when switched on; LCD will 
blink a message and -10 LED will glow solid red.
•  Power - turns the power on and off
•  TalkBk - switches the audio output on the receiver 
to a different channel for communication with the 
production crew. Requires a receiver with this func-
tion enabled.
ProgSw
Power
Use the   and   
arrow buttons to 
select the desired 
function or disable 
the switch
Gain
Freq.
ProgSw
Rolloff
NOTE: The programmable switch will continue 
to operate whether or not keypad changes are 
locked.
Selecting the Low Frequency Roll-off
The low frequency audio roll-off is adjustable to op-
timize performance for ambient noise conditions or 
personal preference. 
Low frequency audio content may be desirable or 
distracting, so the point at which the roll-off takes place 
can be set to 35, 50, 70, 100, 120 or 150 Hz.
Rolloff
70 Hz
Gain
Freq.
ProgSw
Rolloff
Selecting Audio Polarity (Phase)
Audio polarity can be inverted at the transmitter so the 
audio can be mixed with other microphones without 
comb filtering. The polarity can also be inverted at the 
receiver outputs.
Phase
BatType
TxPower  
Remote
Phase
Normal
Invert
Selecting Battery Type
The voltage drop over the life of different batteries var-
ies by type and brand. Be sure to set the correct battery 
type for accurate indications and warnings. The menu 
offers alkaline or lithium types.
Phase
BatType
TxPower
Remote  
BatType
Alk.
Lith.
If you are using rechargeable batteries, it is better to 
use the timer function on the receiver to monitor the 
battery life rather than the indicators on the transmitter. 
Rechargeable batteries maintain a fairly constant volt-
age across the operating time on each charge and stop 
working abruptly, so you will have little or no warning as 
they reach the end of operation. 
Setting Transmitter Output Power
The output power can be set to 25 mW or 50 mW.
Rolloff
Phase
BatType
TxPower  
TxPower
25 mW
50 mW
Remote Function
Remote control “dweedle” tones from a smart phone 
can be used to control the transmitter.










