Specifications and features, Specifications and features 4 – Lectrosonics UM250c User Manual

Page 14

UM250C

SPECIFICATIONS AND FEATURES

Operating frequencies:

537.600 to 607.900 MHz
614.100 to 767.900 MHz

Frequency selection:

256 frequencies in 100kHz steps

RF Power output:

250 mW

Pilot tone:

32.764 kHz (± 2Hz); 5kHz deviation

Frequency stability:

± 0.002%

Deviation:

± 75 kHz (max)

Spurious radiation:

90 dB below carrier at frequencies less than 1GHz

Equivalent input noise:

-126 dBV

Input level:

Nominal 2 mV to 300 mV, before limiting.
Mic input greater than 2V, with limiting.
Line input greater than 20V, with limiting (Input to pin 5, pin 4 tied to ground.)

Input impedance:

Taps provided for dynamic, electret and line level.
Mic load impedance greater than 4k.
Line load impedance greater than 10k.

Input compressor:

Soft compressor, >30 dB range

Gain control range:

43 dB; semi-log rotary control

Modulation indicators:

Dual LEDs indicate modulation level 12 dB below limiting and at the onset of limiting.

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 bronze cable supplied. 50 Ohm port allows connection to test equipment.

Battery:

Precision compartment auto-adjusts to accept any known alkaline or lithium 9 Volt battery.

(We’ve tried 150 different ones!)

Battery Life:

2 hours with alkaline, 7 hours with lithium

Weight:

6.6 ozs. including battery

Dimensions:

3.1 x 2.4 x .75 inches

Emission Designator:

160KF3E

Specifications subject to change without notice.