User's Manual

Super-Minature Belt Pack Transmitter
Rio Rancho, NM 17
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.
Input impedance:
Dynamic mic: 300 Ohms
Electret lavaliere: Input is virtual ground with servo adjusted
constant current bias
Line level: 2.7 k Ohms
Input limiter: Soft limiter, 30 dB range
Bias voltages: Fixed 5 V at up to 5 mA
Selectable 2 V or 4 V servo bias for any
electret lavaliere.
Gain control range: 40 dB; panel mounted membrane switches
Modulation indicators: Dual bicolor LEDs indicate modulation of
–20, -10, 0, +10 dB referenced to
full modulation.
Low frequency roll-off: –18 dB/octave; 70 Hz
Controls: Control panel with LCD and four
membrane switches.
Audio Frequency Response: 35 Hz to 20 kHz, +/-1 dB (The audio is
deliberately rolled off at 70 Hz using a
18 dB/octave filter. This filter cannot be
disabled.)
Signal to Noise Ratio (dB):
(overall system, 400 Series mode)
Total Harmonic Distortion: 0.2% typical (400 Series mode)
Audio Input Jack: Switchcraft 5-pin locking (TA5F)
Antenna: Flexible, unbreakable steel cable.
Batteries: 1.5 Volt AA lithium or NiMH recommended
Battery Life: SM: 1.5 hours (alkaline); 5.5 hours (lithium),
4 hours with 2500 mAh NiMH
SMD: 5.75 hours (alkaline); 14.25 hours (lithium),
8.5 hours with 2500 mAh NiMH
SMQ: 1.75 hours (alkaline); 7.5 hours (lithium),
5 hours with 2500 mAh NiMH
Weight: SM: 2.7 oz.. (75.9 grams) with lithium battery
SMD/Q: 3.7 oz.. (105 grams) with lithium batteries
Overall Dimensions:
SM: 2.3 x 1.8 x 0.64 inches
(not including microphone)
58 x 46 x 16 mm
(not including microphone)
SMD/Q: 2.3 x 2.4 x 0.64 inches
(not including microphone)
58 x 60 x 16 mm
(not including microphone)
Emission Designator: 180KFE3
Specifications subject to change without notice.
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
Block 30 768.000 - 793.500
Block 31 793.600 - 819.100
Block 32 819.200 - 844.700
Block 33 844.800 - 865.000
Block 37 944.100 - 951.900
(Not all frequencies are usable in some countries)
Frequency range: 256 frequencies in 100 kHz steps
for one 25.5 MHz wide block
Channel Spacing: 100 kHz
Frequency selection: Control panel mounted membrane switches
RF Power output: SM: 100 mW (nominal)
SMD: 100 mW (nominal)
SMQ: 250 mW (nominal)
Compatibility Modes (6) Digital Hybrid Wireless™ (400 Series),
200 Series, 100 Series, Mode 3
(other analog), Mode 6, and IFB
Pilot tone: 25 to 32 kHz; 5 kHz deviation
(in 400 Series Mode)
Frequency stability: ± 0.002%
Deviation: ± 75 kHz max. (in 400 Series Mode)
Spurious radiation: 60 dB below carrier
Equivalent input noise: –125 dBV, A-weighted
Input level:
If set for dynamic mic: 0.5 mV to 50 mV before limiting.
Greater than 1 V with limiting.
If set for electret lavaliere mic: 1.7 uA to 170 uA before limiting.
Greater than 5000 uA (5 mA) with limiting.
Line level input: 5.0 mV to 6 V before limiting.
Greater than 15 V with limiting.
Specifications and Features
Note: The dual envelope “soft”
limiter provides exceptionally good
handling of transients using variable
attack and release time constants. Once activated, the limiter compresses 30+ dB of
transmitter input range into 4.5 dB of receiver output range, thus reducing the measured
figure for SNR without limiting by 4.5 dB
SmartNR No Limiting w/Limiting
OFF 103.5 108.5
NORMAL 107.0 111.5
FULL 108.5 113.0
For body worn operation, this SM Belt-Pack Transmitter
has been tested and meets the FCC RF exposure
guidelines when used with the Lectrosonics accesso-
ries supplied or designated for this product. Use of
other accessories may not ensure compliance with FCC
RF exposure guidelines. Contact Lectrosonics if you
have any questions or need more information about RF
exposure using this product.