EO3 Specifications

OVERALL SYSTEM PERFORMANCE
Frequency Response	100 Hz - 10KHz ± 3 dB
Signal-to-Noise Ratio	60 dB
Total Harmonic Distortion	< 0.5%
RF Carrier Frequencies	Eight factory preset channels between 72-76 MHz
	Channel AA: 72.1, BB: 72.3, CC: 72.5, DD: 72.7
	EE: 72.9, FF: 75.5, GG: 75.7, HH: 75.9
Frequency Stability	Better than .005%
Modulation	FM ± 75 KHz
Operating Range	Up to 300 feet line-of-sight
EO3-T TRANSMITTER
Line Input	Connector: One 1/4“ phone jack
	Impedance: 100 K Ohms, unbalanced.
Mic Input	Connector: One 1/4“ phone jack
	Impedance: low impedance, unbalanced, with 9 VDC at 1 mA
	for condenser mic.
Power Output	80,000 µV @ 3 meters
Controls	Power On/Off, audio input gain adjust
Indicators	Power On LED, Audio Modulation “TX” LED
Antenna	Permanently mounted telescoping whip
Power Requirement	9 VDC regulated, @ 200 mA, AC-EO3 adapter provided
Dimensions	1.25” H, 8.25” W, 4.25” D (3.175 x 20.9 x 10.8 cm)
Weight	18.2 oz. (500 g.)
EO3-R RECEIVER
Controls	Combination volume/on-off wheel
Audio Output	100 mW max into 16 Ohms
Connectors	3.5 mm mini jack for earbuds output
Earphones	Binaural EB-3 earbuds with optional-use EMI soft rubber inserts
Antenna	Integral with earbud cord
Indicators	LED power on indicator
Sensitivity	2 µV for 12 dB Sinad with squelch defeated
	Squelches at 10 µV for min. 50 dB S-N ratio
Mute Threshold	8-10 µV
Power Requirement	9V carbon zinc or alkaline battery
Battery Life	17-20 hours with alkaline battery; 10-12 hours with carbon zinc battery
Dimensions	3.35” H, 2.75” W, .75” D (8.5 x 6.5 x 2.25 cm)
Weight	2.65 oz. without battery (73 g)

Specifications subject to change at any time without prior notice for purposes of product improvement

EO3 Specifications

Total Harmonic Distortion

RF Carrier Frequencies

EO3-T TRANSMITTER

Mic Input

EO3-R RECEIVER