Azden 311LT Performance Series VHF Wireless Lapel Microphone System Get Azden 311LT(A1) Price / Buy Online 169.505MHz Get Azden 311LT(A3) Price / Buy Online 171.045MHz Get Azden 311LT(A4) Price / Buy Online 171.905MHz

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Note: As with all the Azden VHF Performance Series models, the 311LT is available in any of 25 frequencies (see chart below). Video Direct stocks the 3 popular frequency options above, which can be ordered through our online store. We can also provide any of the other 22 frequency options via special order at the same price. Call us toll-free 1-800-368-5020 to speak to one of our customer service representatives.

The 311LT is a complete system which includes the 31BT body-pack transmitter, the EX-503 electret condenser lavalier microphone and the 311DR receiver.

The 311DR True Diversity VHF Receiver contains two separate receivers, each operating on the same frequency. The incoming signal is constantly monitored by a diversity circuit, which switches automatically to the receiver with the stronger RF signal. This allows wireless performance that is virtually drop-out free, even under the most adverse conditions. The 311DR meets the professional's need for "rock steady" RF signal strength, less chance of drop-outs and exceptional audio performance. The receiver features a 1/4-inch mini-plug output jack as well as an XLR output jack. With Power and A/B true diversity reception LEDs and volume adjustment.

The 311DR will work flawlessly with the Azden 31LT VHF transmitter with lavalier mic. Featuring Azden's EX-503 high-quality omni-directional electret condenser microphone element, the 31LT also has an input level control, a durable ABS case with snap-off belt clip, and a 3-position Power switch with Standby for muting the audio. The EX-503 lavalier microphone is ideal for speaking applications such as lecturers, actors, actresses, etc.

Azden 311DR VHF Wireless Receiver Key Features

311DR Receiver Key Features

True Diversity Receiver

Designed for wireless performance less prone to dropouts than non-diversity systems, the 311DR houses two separate receivers, each receiving on the same frequency. A diversity circuit inside the 311DR monitors the sound coming from the microphone/transmitter and switches to the receiver (A or B) with the stronger signal.

Power LED Indicator

The 311DR's Power LED will illuminate as soon as the unit is plugged in.

Antenna A/B LED Indicators

When the transmitter is turned on and is in reception range of the receiver, either the A or B LED will light up RED, depending on which receiver circuit is getting the strongest signal from the transmitter. Flickering between the A and B LED is a normal indication of the diversity front-end working to reduce multipath distortion.

Peak LED Indicator

This indicator lights when the receiver's input level from the transmitter exceeds unity.

12V DC Input, Supplied AC Adapter

Plug the supplied AC adapter into the 12 volt input on the receiver then into an AC electrical outlet.

Output Adjustment

Rotate this knob clockwise to increase, or counterclockwise to decrease volume level.

Balanced and Unbalanced Output

The 311DR features both 1/4-inch and XLR output jacks and volume adjustment.

311DR Receiver Specifications

Frequency Range:

25 VHF Channels (169.505 - 197.325 MHz)

Frequency Response:

50Hz to 18kHz ±3dB

Audio Distortion:

less than 1.0% ±15K deviation

Dynamic Range:

better than 100dB

S/N Ratio:

better than 95dB

Operating Temperature:

32º ~ 113º F (0º ~ 45º C)

Operating Range:

Up to 300 feet

Noise Reduction:

2:1 logarithmic compressor/expander

Oscillator/Modulation:

Crystal Controlled/FM

Receiver Type:

Super Heterodyne/Crystal Controlled

Image Rejection:

Better than 60dB

Reception Sensitivity:

Better than 15dBV

Reception Selectivity:

60kHz

Audio Output Adj. Range:

min. -30dB, center 0dB, max +6dB

Audio Output Impedance:

2.2 k ohms unbal., 4.4K ohms bal.

Power Requirements:

12V DC 300mA

Dimensions (W x D x H):

11" x 4.7" x 1.4" (280 x 120 x 37 mm)

Weight:

29.3 oz (830 g)

Azden 31LT VHF Wireless Body-Pack Transmitter

31LT Transmitter Key Features

Compact and Unobtrusive Transmitter Unit In Durable ABS Case With Snap-Off Metal Belt Clip

The 31LT transmitter comes with a belt clip. It is small enough to also be tucked into a jacket or pants pocket.

Audio Input Level Control

The audio input level control enables you to adjust the input level of the microphone. Turn clockwise to increase, or counter-clockwise to decrease the input level. A small screwdriver is supplied to make these adjustments. The level control is factory-preset in the center position.

3-Position Power Switch With Standby

The power OFF position disables all transmitter functions while STANDBY position turns the audio off and on. Switching the transmitter to STANDBY will cause the audio to mute, allowing the microphone to be handled with no noise.

Mini-Plug Connector

A standard 3.5mm mono jack can be used.

31LT Transmitter Specifications

Included Microphone Unit:

EX-503 electret condenser lavalier microphone

Optional Microphone Units:

Lavalier or Headset

Frequency Range:

25 VHF Channels (169.505 - 197.325 MHz)

Frequency Response:

40Hz to to 18kHz ±3dB

Audio Distortion:

less than 1.0% @± 15K deviation

Dynamic Range:

better than 100dB

S/N Ratio:

better than 95dB

Operating Temperatures:

0º C to 45º C

Operating Range:

Up to 300 feet

Oscillator/Modulation:

Crystal Controlled/FM

Antenna:

External Antenna

Pre-emphasis:

50 Micro Sec.

MAX Input Level:

0dBm - 10dBm

RF Output Power:

30mW (50mW MAX)

Input Impedance:

2.2 k ohms

Audio Adj. Range:

+30dB

Oscillator:

PLL synthesized

Battery:

9V (006p)

Battery Life:

8 to 10 hours with Alkaline Battery

Dimensions (W x D x H):

2.4" x 3.4" x 0.85"(60 x 86 x 21.5 mm)

Weight:

3.9 oz (Without Battery, Mic, Cable) - (112g)

Note: As with all the Azden VHF Performance Series models, the 311LT is available in any of the 25 frequencies above. Video Direct stocks the 3 popular frequency options, which can be ordered through our online store. We can also provide any of the other 22 frequency options via special order at the same price. Call us toll-free 1-800-368-5020 to speak to one of our customer service representatives.

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