SPECIFICATIONS AND FEATURES
Operating frequencies: 470 to 608 MHz
RF Power output: 70 mW (nominal)
Frequency stability: ±0.002%
Deviation: ±15 kHz (max)
Preemphasis: shelving type, 100us (1.6kHz), 24us (6.4kHz)
Spurious radiation: 50 dB below carrier
Equivalent input noise: -126 dBV
Input level: Nominal 2 mV to 300 mV, before limiting.
Greater than 50 Volts maximum, with limiting.
Input impedance: Taps provided for 500, 1k, 10k Ohm
Input compressor: Soft compressor, >30 dB range
Gain control range: 43 dB; semi-log rotary control
Modulation indicators: Dual LEDs indicate modulation level 20dB below limiting and
at the onset of limiting.
Controls: 2 position “OFF-ON” slide switch. Front panel knob adjusts
audio gain. Recessed control on side panel adjusts low
frequency rolloff.
Audio Input Jack: Switchcraft 5 pin locking (TA5F)
Antenna: Detachable, flexible wire 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 108
different ones!)
Battery Life: 7.5 Hours with alkaline 9 Volt
Weight: 6.3 ozs. including battery
Dimensions: 3.1 x 2.4 x .75 inches
Emission Designator: 35KF3E
Specifications subject to change without notice.
The UM190B transmitter is FCC type accepted under Part 74: 470-608 MHz
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