Shure AXT400

RF Carrier Frequency Range:  470–952 MHz (Note: varies by region)
Working Range:

• Under typical conditions: 150 m (500 ft)
• Line of Sight, outdoors for a single system: 500 m (1600 ft)

Audio Frequency Response 40 – 18 kHz (+1, -3 dB) (Note: Dependent on microphone type)
RF Tuning Step Size: 25 kHz
Modulation: (45 kHz max. deviation) FM, Audio Reference Companding with pre- and de-emphasis
Dynamic Range:

• XLR Output: >118 dB, A-weighted
• AES3 Output: >130 dB, A-weighted

Image Rejection: >120 dB, typical
RF Sensitivity: -110 dBm for 12 dB SINAD, typical
Spurious Rejection: >110 dB, typical
Ultimate Quieting: >110 dB, A-Weighted
Squelch Quieting: >115 dB, A-Weighted
Latency: <1 ms
Total Harmonic Distortion: (45 kHz max. deviation) <0.3%, A-weighted, typical
System Audio Polarity:

• Positive pressure on microphone diaphragm (or positive voltage applied to tip of WA302 phone plug) produces positive voltage on pin 2 (with respect to pin 3 of low-impedance output) and the tip of the high impedance 1/4-inch output.

Gain Adjustment Range: 0 to -30 dB (in 1 dB steps), plus Mute setting
Dimensions: 44 mm x 483 mm x 366 mm H x W x D
Weight: 5.5 kg
Housing Steel: Extruded aluminum
Power Requirements: 100 to 240 V AC, 50-60 Hz
Current Drain: 1.1 A RMS (referenced at 120 V AC)
Operating Temperature Range: -18°C to 63°C
Storage Temperature Range: -29°C to 74°C