User's Manual
WM, WM/E01, WM/E02, WM/X
LECTROSONICS, INC.
20
Operating frequencies:
WM:  Block 470 470.100 - 495.600    Block 21 537.600 - 563.100
  Block 19 486.400 - 511.900    Block 22 563.200 - 588.700
  Block 20 512.000 - 537.500    Block 23 588.800 - 614.300 
WM/E01:  Block 470 470.100 - 495.600    Block 23 588.800 - 614.300
  Block 19 486.400 - 511.900    Block 606 606.000 - 631.500
  Block 20 512.000 - 537.500    Block 24 614.400 - 639.900
  Block 21 537.600 - 563.100    Block 25 640.000 - 665.500
  Block 22 563.200 - 588.700    Block 26 665.600 - 691.100
WM/E02*:  Block 470 470.100 - 495.600    Block 25 640.000 - 665.500
  Block 19 486.400 - 511.900    Block 26 665.600 - 691.100
  Block 20 512.000 - 537.500    Block 27 691.200 - 716.700 
  Block 21 537.600 - 563.100    Block 28: 716.800 - 742.300
  Block 22 563.200 - 588.700    Block 29: 742.400 - 767.900 
  Block 23 588.800 - 614.300    Block 30: 768.000 - 793.500
  Block 606 606.000 - 631.500    Block 31: 793.600 - 819.100
  Block 24 614.400 - 639.900    Block 32: 819.200 - 844.700
 Block 33: 844.800 - 861.900
WM/X:  Block 470 470.100 - 495.600    Block 23 588.800 - 614.300
  Block 19 486.400 - 511.900    Block 606 606.000 - 631.500
  Block 20 512.000 - 537.500    Block 24 614.400 - 639.900
  Block 21 537.600 - 563.100    Block 25 640.000 - 665.500
  Block 22 563.200 - 588.700    Block 26 665.600 - 691.100
NOTE: It’s the user’s responsibility to select the 
approved frequencies for the region where the 
transmitter is operating
Specifications
Channel Spacing:  WM:   25 kHz or 100 kHz 
      WM/E01:  100 kHz 
      WM/E02:  100 kHz 
    WM/X:   25 kHz or 100 kHz
Frequency selection:  Control panel mounted membrane switches
RF Power output:  WM:   Switchable; 50, 100 or 250 mW 
      WM/E01:   Switchable; 50, 100 or 250 mW 
      WM/E02:   10 mW 
      WM/X:   Switchable; 50, 100 or 250 mW
Compatibility Modes   WM:   Nu Hybrid, IFB, Mode 3 
      WM/E01:   Digital Hybrid Wireless® and IFB 
      WM/E02:   Digital Hybrid Wireless® and IFB 
      WM/X:   Nu Hybrid, Digital Hybrid Wireless
®
 , IFB, 
         Mode 3, Mode 4, Mode 6
Pilot tone:  3.5 kHz deviation (Nu Hybrid) 
      25 to 32 kHz; 3 kHz deviation (Digital Hybrid Mode)
Frequency stability:  ± 0.002%
Spurious radiation:  WM:   Compliant with ETSI EN 300 422-1 v1.4.2 
      WM E01/E02/X: 60 dB below carrier
Equivalent input noise:  –125 dBV, A-weighted
Input level: 
  Dynamic mic:   0.5 mV to 50 mV before limiting. 
      Greater than 1 V with limiting. 
  Electret lavaliere mic:   1.7 uA to 170 uA before limiting. 
      Greater than 5000 uA (5 mA) with limiting. 
  Line level input:   17 mV to 1.7 V before limiting. 
      Greater than 5 V with limiting.
Input impedance: 
  Dynamic mic:   300 Ohms 
  Electret lavaliere:   Input is virtual ground with servo adjusted 
      constant current bias 
  Line level:   > 2.7 k Ohms
Input limiter:  Soft limiter, 30 dB range
Bias voltages:  Selectable; 2V, 4V and Off
Gain control range:  44 dB; panel mounted membrane switches
Modulation indicators:  Dual bicolor LEDs indicate modulation of 
      –20, -10, 0, +10 dB referenced to full modulation
Controls:  Control panel with LCD and four membrane 
    switches
Low frequency roll-off:  Adjustable from 35 to 150 Hz
30
100
1kH
z1
0k
20k
+6
+3
0dB
-3
-6
-9
-12
Line in
Mic in 150 Hz
Roll-off
Mic in 35 Hz
Roll-off
Audio Frequency Response: 35 Hz to 20 kHz, +/-1 dB (The low frequency 
 roll-off is adjustable - see graph above) 
Signal to Noise Ratio (dB):
(Note: the dual envelope “soft”  
limiter provides exceptionally  
good handling of transients  
using variable attack and release  
time constants. The gradual onset of limiting in the design begins below full modulation, 
which reduces the measured figure for SNR without limiting by 4.5 dB)
SmartNR  No Limiting  w/Limiting
OFF  103.5 108.0
NORMAL 107.0  111.5
FULL  108.5 113.0
Total Harmonic Distortion: 0.2% typical (Nu Hybrid mode)
Audio Input Jack: 2.5 mm locking micro; threaded for stainless
   sleeve on WP connector
Antenna: Flexible, unbreakable steel cable.
Batteries: 1.5 Volt AA (lithium recommended)
Power Setting: Battery Life: 
(HH:MM)
50 mW (2 AA): 13:00
100 mW (2 AA): 10:45
250 mW (2 AA): 5:45
Weight:   5.33 oz. (151 grams) with lithium batteries
Housing Dimensions:  2.98 x 2.55 x 0.77 inches 
      75.7 x 64.8 x 19.6 mm 
      (including battery caps)
Emission Designator:  WM: 110KF3E 
    WM/E01:  180KF3E 
Specifications subject to change without notice. 
* Frequency usage varies by country.










