Listen Technologies LT-800-216, LT-800-072 LT-800Specifications, Architectural Specifications

Specifications

LT-800 Specifications

Architectural Specifications

The stationary FM transmitter shall be capable of broadcasting on 57 channels. The transmitter shall have a SNR of 80dB or greater. The output power shall be adjustable to quarter, half or full. Channel tuning shall be capable of being locked. The device shall broadcast on both wide and narrow band channels. The device shall have an audio frequency response of 63 Hz to

15k Hz, ± 3dB at 72 MHz, or of 63 Hz to 10k Hz, ± 3dB at 216 MHz. It shall have two mixing audio inputs. The device shall have the following audio controls: input level, mix level and an adjustable low pass filter. The device shall have an audio processor that is capable of automatic gain control and limiting. The Listen LT-800 is specified.

Specification

	Specifications	LT-800-072		LT-800-216
	RF Frequency Range	72.025 - 75.950 MHz		216.025 - 216.9875 MHz
	Number of Channels	17 wide band, 40 narrow band		19 wide band, 38 narrow band
	Frequency Accuracy	+/-.005% stability 32˚ to 122˚F (0˚- 50˚C)
RF	Transmitter Stability			50 PPM
	Output Power	80,000uV at 3 m		100mW (max allowed by FCC)
	Antenna			Various Antennas available
	Antenna Connector			BNC
	Compliance	FCC Part 15, Industry Canada		FCC Part 90, Industry Canada
		** All system specifications		are wireless end-to-end
	System Frequency Response	50 Hz - 15 kHz (±3 dB)		50 Hz - 10 kHz (±3 dB)
	System Signal to Noise Ratio	80 dB SQ enabled; 60 dB SQ disabled		80 dB SQ enabled; 50 dB SQ disabled
	(A-Weighted)
	System Distortion	<2% total harmonic distortion (THD) at 80% deviation
	Audio Input 1	Rear panel. (1) Female-XLR and ¼ in. combo connector, balanced, 0/-55 dBu (line/mic) nominal input level adjustable,
		-30/+21 dBu (line/mic) maximum input level, impedance 20k/1k Ohms (line/mic), phantom power +12 VDC.
Audio	Audio Input 2	Rear panel. Two (2) Phono connectors, unbalanced, -10/+10 dBu nominal input level
		adjustable, +30 dBu maximum, impedance 100k Ohms.
	Audio Processing (Process)	Compression can be turned on/off. Slope internally adjustable from 1:1 to 4:1. Default 2:1
	Contour	Cuts and boosts frequencies above 5 kHz
	Combined Audio Output (Mix)	Input 1 and Input 2 Mixed Output (Rear Panel). Two (2) phono connectors, unbalanced, -10 dBu nominal output level,
		+19 dBu maximum, impedance 10 ohm.
	Headphone Output (Monitor)	Front panel. One (1) 3.5 mm stereo connector, unbalanced, adjustable output level, +7 maximum, impedance 10 Ohm.
	Front Panel	Power, Test Tone on/off, Channel UP/DOWN, Input levels, Mix level, Contour, Monitor volume control.
Controls	Rear Panel	Input 1 Level (line, mic, mic-phantom power), Input 2 Level (-10/+10 dBu), RF Power (low, mid, high)
	Internal Adjustments	Compression ratio for audio processor
	Programming	SQ on/off, Processing on/off. Channel lock
	Input 1 and Input 2, Mix VU	Indicates Input 1, Input 2 and Mix audio levels. 10 segment LED’s (8 green, 2 red)
	SQ and Processing	Indicated by a green LED when on (front panel)
Indicators	RF Power	Indicated on the LCD (low, mid, high)
	LCD Display	Channel designation, lock status, RF Power Level, programming (front panel)
	Test Tone	Red LED illuminates when test tone enabled
	Power Supply Type	In-line power supply. Listen part number LA-207 (Line cord is determined by each country’s AC power standards).
	Power Supply Input	Input: 100-240 VAC, 50-60 Hz, 0.4 A
Power	Power Supply Output		Output: 12 VDC, 1.3 A, 15.6 W
	Power Supply Connector	Output Connector: .02 in. (5.0 mm) OD, .01 in. (2.5 mm) ID, barrel type
	Power Supply Compliance			UL, CE, GS, TUV
	Dimensions (H x W x D)	1.75 x 8.50 x 9.13 in. (4.5 x 21.5 x 23 cm)
	Color		Dark Grey with white silk screening
	Unit Weight			2.6 lbs. (5.7 kg)
Physical	Unit Weight with LA-201			4.4 lbs. (2.0 kg)
	Power Supply
	Shipping Weight			5.0 lbs. (2.26 kg)
	Rack Mounting	One (1) rack space height, 1/2 rack space wide. One (1) or two (2) transmitters can be mounted in one rack space.
			Optional rack mount (LA-326)
	Temperature - Operation		-10˚C (14˚F) to +40˚C (104˚F)
Environmental	Temperature - Storage		-20˚C (-4˚F) to +50˚C (122˚F)
	Humidity	0 to 95% Relative Humidity, non condensing

Specifications are subject to change without notification

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