Overall System Performance
Frequency Response: 25 - 20,000 Hz ± 3 dB

Dynamic Range: 120 dB

Harmonic Distortion: < 0.3%

RF Carrier Frequencies: Standard channels available between 170 -216 MHz

Frequency Stability: ±.005%, crystal controlled

Modulation: FM/± 15 kHz

Operating Range: 200 feet, adverse conditions, up to 1,500 feet line-of-sight

Nady ENG-11 Snap On VHF Transmitter
Audio Input Impedance: 180 Ohms

Controls: Transmitter ON/OFF, Audio ON/OFF, Audio level adjust

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

Indicators: Low battery LED, Audio LED

RF Power Out: 50 mW (max allowed by FCC)

Harmonic/Spurious Emissions: < -40 dBm

Battery: 9V alkaline

Battery Life: 8-10 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 551 VR VHF Receiver
Controls: On/off/volume wheel, mute adjust, output level adjust, channel selector

Headphone output: Low impedance unbalanced

Audio Output: 600 ohm balanced output and a max. audio level = -1 dBm (675 mV RMS)

Connectors: Balanced audio out: 3.5 mm balanced jack. Headset out: 3.5 mm unbalanced mono jack. Antenna : 3 mm screwthread. DC 9V Power in: 3.5 mini jack

Indicators: Low battery LED

Mute: Externally adjustable; 1 µV preset minimum.

Unwanted Signal Rejection: 60 dB image and spurious

Battery: 9V alkaline

Battery Life: 8-10 hours

Dimensions: 2.5" W x 3.4" H x .44" D (6.4 x 8.5 x 1.2 cm)

Weight: 7.7 oz (212 g.) including battery