Overall System Performance
Frequency Response: 25Hz - 20 kHz ± 3 dB

Dynamic Range: 120 dB

Harmonic Distortion: < 0.3%

RF Carrier Frequencies: Up to 160 channel switchable selected groups in the 477 to 951 MHz range

Frequency Stability: ±.005%, PLL Synthesis

Modulation: FM ± 25 kHz max. (with 661 VR receiver)

Operating Range: 250 feet typicalÑup to 500+ feet line-of-sight

Nady ENG-12 Snap On UHF Transmitter
Audio Input Impedance: Low impedance unbalanced

Controls: Transmitter On/Off, Audio On/Off, channel group selector, channel selector, Audio level adjust

Microphone Connector: Standard three-pin XLR, with 9V DC power for lavalier mics

Indicators: Low battery LED

RF Power Out: 50-125 mW, depending on frequency band

Harmonic/Spurious Emissions: < -40 dB

Battery: 9V alkaline

Battery Life: 4-6 hours

Dimensions: 1.5" W x 4.2" H x 1.5" D (3.9 x 10.5 x 3.9 cm)

Weight: 7 oz. (192 g.) including battery

Nady 661 VR UHF Receiver
Controls: Mute adjust, output level adjust, channel selector, channel group selector, rotary ON/OFF/VOLUME control Audio output: Low impedance balanced output

Connectors: Audio output, headphone output and 12 V DC power input @ 100 mA, tip positive each with a 3.5 mm mini jack

Indicators: Power on (single flash) Low Battery Alert (steady) and Transmitter "TX"

Mute: Externally adjustable; 1 µV preset minimum

Unwanted Signal Rejection: 80 dB image and spurious

Battery: 9V alkaline

Battery Life: 1.5-2 hours

Dimensions: 2.5" W x 6.1" H x .44" D (6.5 x 16 x 1.25 cm)

Weight: 10.5 oz (298 g.) including battery