Lectrosonics LMb (B1: 537.600 - 614.375 MHz, BLOCKS 21, 22, 23)

The LMb transmitter can be configured to operate as a "one touch" device with a single power on/off switch on the top panel, or with full access to all operational parameters using the side panel membrane switches and LCD interface. The top panel switch can also be configured to provide a mute or talkback function.

Frequencies are selectable in 100 kHz or 25 kHz steps across a maximum tuning range of 76.7 MHz. This yields a total of 3072 available frequencies across three standard frequency blocks. The tuning range varies in other blocks to meet applicable frequency allocations.

• Covers three standard frequency blocks

• Digital Hybrid Wireless for compandor-free audio

• 50 mW RF power

• Compatibility modes for use with analog receivers

• 25 or 100 kHz tuning steps for up to 3072 selectable frequencies

• Integrated multi-function switch for mute or talkback modes

• Wide range input gain control in 1 dB steps

OPERATING FREQUENCIES:

B1 537.600 - 614.375 MHz

FREQUENCY SELECTION STEPS:

Selectable; 100 kHz or 25 kHz

RF POWER OUTPUT:

50 mW

PILOT TONE:

25 to 32 kHz; 5 kHz deviation (Digital Hybrid mode)

FREQUENCY STABILITY:

± 0.002%

DEVIATION:

± 75 kHz max. (Digital Hybrid mode)

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:

• Mic: 300 Ohm

• Line: 2k Ohm

INPUT LIMITER:

DSP controlled, dual envelope "soft" limiter with greater than 30 dB range

GAIN CONTROL RANGE:

44 dB; digital control

MODULATION INDICATORS:

Dual bicolor LEDs indicate modulation of -20, -10, 0 and +10 dB referenced to full modulation, LCD bar graph

CONTROLS:

Top panel toggle switch; programmable as power, mute, talkback or none (off)function, Side panel membrane switches with LCD

interface for power on/off and all setup and configuration controls

AUDIO INPUT JACK:

Switchcraft 5-pin locking (TA5F)

ANTENNA:

Galvanized steel, flexible wire

BATTERY:

Two AA; alkaline, lithium, NiMH rechargeable

BATTERY LIFE:

• Alkaline: 4.5 hours

• Duracell Quantum: 7 hours

• Eneloop 2400 mAH NiMH: 8 hours; new batteries fully charged

WEIGHT:

5.8 ounces (141 grams), including lithium AA batteries and wire belt clip

DIMENSIONS:

3.2 x 2.4 x .9 in. (81 x 61 x 20 mm)