Lectrosonics UM250C

Specifications

Operating frequencies: 537.600 to 767.900 MHz (608-614 MHz band excluded in USA)
Frequency selection: 256 frequencies in 100kHz steps with two detented rotary switches
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 1 GHz
Equivalent input noise: –126 dBV
Input level: Nominal 2 mV to 300 mV, before limiting.
Mic input greater than 2V peak, with
limiting. Line input greater than +20dBu
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 12dB
below limiting and at the onset of limiting.
Controls: Two position slide switch with 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 SMA connector.
Battery: Precision compartment auto-adjusts to
accept any known 9 Volt battery.
Battery Life: 2 hours (alkaline); 7 hours (lithium)
Weight: 6.6 ozs. including battery
Dimensions: 3.1 x 2.4 x .75 inches