Lectrosonics LM - Manual (Page 13)

Frequency-Agile UHF Belt-Pack Transmitter
Specifications and Features
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
Block 29 742.400 - 767.900
Frequency Selection: 256 frequencies in 100 kHz steps
Channel Separation: 100 kHz
RF Power output: Greater than 50 mW
Pilot tone: 25 to 32 kHz frequency; 5 kHz deviation (400 Series only)
Frequency stability: ± 0.002%
Deviation: ± 75 kHz max. (400 Series only)
Spurious radiation: 60 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: 2k Ohm
Input limiter: Dual envelope, >30 dB range
(Note: The dual envelope “soft” limiter provides exceptionally good handling of transients using variable attack and release time constraints.)
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: LM: –12 dB/octave; 70Hz
IM: –12 dB/octave; 35Hz
Audio frequency response
(overall system):
LM: 90 Hz to 20 kHz (+/- 1 dB) with the 70Hz low frequency roll-off filter.
IM: 40 Hz to 20 kHz (+/- 1 dB)
(Note: The transmitter is deliberately rolled off at 70Hz in the LM tramsmitter to reduce transmission of the lower frequency noise.)
Controls: 2 position “OFF-ON” slide switch for noiseless turn on/turn off operation.
Front panel audio gain control.
Rotary switches on side panel adjust transmitter frequency.
Audio Input Jack: Switchcraft 5 pin locking (TA5F)
Antenna: Galvanized steel, flexible wire.
Battery: Precision compartment auto-adjusts to accept any known alkaline 9 volt battery.
Battery Life: 6 hours (alkaline); 13 hours continuous (lithium)
Weight: 6.3 ozs. including battery
Dimensions: 3.1 x 2.4 x .75 inches
Emission Designator: 180KF3E
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.
Rio Rancho, NM 13