Instruction Manual
Wideband Hand Held Transmitter
Rio Rancho, NM
9
Gain
This setting is very important since it will determine the 
audio signal to noise ratio and dynamic range that the 
wireless system will deliver. Gain must be set accord-
ing to the individual voice, the mic capsule in use and 
the handling technique of the user. LEDs in the control 
panel facilitate accurate gain adjustment.
Gain
Freq.
ProgSw
Rolloff
-40
-20
0
Gain
25
IMPORTANT: See the section Input Gain 
Adjustment on page 10 for details.
Freq.
The operating frequency is normally determined using 
the scanning function in the receiver or with coordina-
tion software. The frequency is shown on the transmit-
ter LCD display in MHz and with a hexadecimal code 
that is used on most Lectrosonics receivers.
Gain
Freq.
ProgSw
Rolloff
-40
-20
0
Freq
7A
601.000
ProgSw
The Programmable Switch on the housing can be set 
to provide several functions, or it can be bypassed.
Functions:
TalkBack
Power
Cough
Mute
(none)
See page 11 
for details
Gain
Freq.
ProgSw
Rolloff
Rolloff
A low frequency roll-off filter can be set for a -3dB 
point at 35, 50, 70, 100 or 125 Hz. Roll-off slopes are 
12.2 dB/octave at 35 Hz and 10.1 dB/octave at 70 Hz 
through 125 Hz.
Gain
Freq.
ProgSw
Rolloff
Rolloff
70 Hz
The roll-off frequency is normally adjusted by ear to 
suit personal preferences.
Compat
The HHa can be used with earlier Lectrosonics wire-
less and IFB systems and systems from other manu-
facturers by selecting the correct Compatibility Mode. 
The receiver must be set to the same mode.
Compat
StepSiz
TxPower
Phase
Compat
Nu Hybr
The available modes are as follows. See Specifications 
for the modes available in your model:
•  Nu Hybrid/ 
Digital Hybrid  Digital Hybrid receivers
•  Mode 3    (other brand contact the factory)
•  200 Mode    Earlier Lectrosonics receivers
•  100 Mode 
100 Series Lectrosonics receivers
•  Mode 7    (other brand contact the factory)
•  Mode 6    (other brand contact the factory)
•  IFB Mode    Lectrosonics IFB receivers
NOTE: If your Lectrosonics receiver does not 
have Nu Hybrid mode, set the receiver to Euro 
Digital Hybrid Wireless® (EU Dig. Hybrid).
StepSiz
The frequency can be adjusted in 100 kHz or 25 kHz 
steps to match the receiver. 100 kHz is the standard 
increment for Lectrosonics wireless systems, but 25 
kHz increments may be needed for use with systems 
from other manufacturers or when frequency coordina-
tion requires it.
Compat
StepSiz
TxPower
Phase
StepSiz
100 kHz
25 kHz
The Hex Code on the Main Screen will be smaller in 
the 25 kHz mode and a fraction will appear next to the 
characters if a frequency in between even 100 kHz 
steps is selected.
8
550.400
-40
-20
0
0
550.425
-40
-20
0
80
Hex Code in  
25 kHz mode










