LECTROSONICS TRANSMITTER UM400A

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The UM400A belt-pack transmitter implements the latest digital/analog hybrid technique in a classic Lectro belt-pack transmitter. A 5-pin input jack provides taps for low impedance dynamic mics, electret lavalier mics with positive or negative bias and line level inputs. Input gain is adjustable over a 43 dB range to perfectly match the audio input level for optimum modulation, minimum distortion and maximum signal to noise ratio. Input levels are accurately indicated by two LEDs on the control panel

FEATURES:
Improved Servo Microphone Input
Digital Hybrid Transmitter
Frequency Agility
High Output Power
Mic & Line Level Input
Pristine Audio Quality

Product Manuals

Specifications

Operating frequencies:
Block 21: 537.600 – 563.100
Block 22: 563.200 – 588.700
Block 23: 588.800 – 607.900 and 614.100 – 614.300
Block 24: 614.400 – 639.900
Block 25: 640.000 – 665.500
Block 26: 665.600 – 691.100
Block 27: 691.200 – 716.700
Block 28: 716.800 – 742.300
(*INTERNATIONAL USE ONLY)
Block 29: 742.400 – 767.900
(*INTERNATIONAL USE ONLY)
Block 30: 768.000 – 793.500 (Export)
Block 31: 793.600 – 805.600 (Export)

Frequency selection: 256 frequencies in 100kHz steps
RF Power output: 100 mW (nominal)
Pilot tone: 25 to 32 kHz frequency; 5kHz deviation
Frequency stability: +/- 0.002%
Deviation: +/- 75 kHz (max)
Spurious radiation: 90 dB below carrier
Equivalent input noise: +/-120 dBV, A-weighted
Input level: Nominal 2 mV to 300 mV, before limiting.
Greater than 1V maximum, with limiting.
Input impedance: Taps provided for 200, 4k, 40k Ohm
Input compressor: Dual envelope compressor, >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: +/-18 dB/octave; 35Hz to 150Hz
Audio frequency response (overall system): 32 Hz to 20 kHz (+/- 1dB)
Controls: 2 position “OFF-ON” slide switch for noiseless turn on/turn off operation. Front panel knob adjusts audio gain. Recessed control on side panel adjusts low frequency rolloff.
Rotary switches on side panel adjust transmitter frequency.
Audio Input Jack: Switchcraft 5 pin locking (TA5F)
Antenna: Detachable, flexible wire supplied. 50 Ohm port allows connection to test equipment.

Power Consumption: 80mA
Battery: Precision compartment auto-adjusts to accept any known alkaline 9 Volt battery.
Battery Life: 5 hours (alkaline); 10 hours (lithium)

SIZE:
3.1″ x 2.4″ x 0.75″
78.7 x 61 x 19.1 mm

WEIGHT:
With Battery: 0.39 lb (0.2 kg)