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.