Specifications and features – Lectrosonics UH400 User Manual
Page 10
UH400
SPECIFICATIONS AND FEATURES
Operating frequencies:
537.600 to 607.900 MHz; 614.100 to 793.500 MHz
Frequency selection:
256 frequencies in 100kHz steps
RF Power output:
100 mW (nominal)
Pilot tone:
25 to 32 kHz; 5kHz deviation (in 400 Series mode)
Frequency stability:
± 0.002%
Deviation:
± 75 kHz max. (in 400 Series mode)
Spurious radiation:
60 dB below carrier
Equivalent input noise:
–118 dBV, A-weighted
Input level:
Nominal 2 mV to 300 mV, before limiting; Greater than 1.0 V maximum, with limiting.
Input impedance:
1k Ohm
Input limiter:
Soft limiter, >30 dB range
Gain control range:
43 dB; semi-log rotary control
Modulation indicators:
Dual bicolor LEDs indicate modulation of –20, -10, 0, +10 dB referenced to
full modulation.
Low frequency roll-off:
–12dB/octave; 70 Hz
Controls:
Control panel knob adjusts audio gain.
Rotary switches on bottom panel adjust transmitter frequency.
Audio Frequency Response:
70 Hz to 20 kHz, +/-1dB
(The audio is deliberately rolled off at 70Hz using a
12dB/octave filter. This filter cannot be disabled.)
Signal to Noise Ratio (dB):
SmartNR
No Limiting
With Limiting
(overall system, 400 Series mode)
Off
103.5
108.0
Normal
107.0
111.5
Full
108.5
113.0
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.
Total Harmonic Distortion:
0.2% typical (400 Series mode)
Antenna:
Built in
Battery Type:
9V Alkaline or Lithium
Battery Life:
4.5 Hours with alkaline 9 Volt, 12 hrs with lithium
(Battery life will vary with battery
brand, phantom power voltage setting and mic current drain.)
Weight:
6.5 ozs. with lithium battery, no mic
Overall Dimensions:
1.5 x 1.5 x 4.2 inches
(Not including microphone.)
Emission Designator:
190KF3E
Specifications subject to change without notice.
The FCC requires that the following statement be included in this manual:
This device complies with FCC radiation exposure limits as set forth for an uncontrolled
environment. This device should be installed and operated so that its antenna(s) are
not co-located or operating in conjunction with any other antenna or transmitter.
LECTROSONICS, INC.
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