Frequency Selection : 256 frequencies in 100 kHz steps
Operating Frequency : 640.000 - 665.500 MHz
RF Power Output : 100 mW (nominal)
Pilot Tone : 25 to 32 kHz; 5 kHz deviation (in the 400 Series operating mode)
Frequency Stability : +/- 0.002%
Deviation : +/- 75 kHz (max)
Spurious Emission : 60 dB below carrier
Equivalent Input Noise : -125 dBV (A-weighted)
Input Level : Nominal 2 mV to 300 mV, before limiting; greater than 1V maximum, with limiting
Input Impedance : 300 Ohms
Limiter : Dual envelope "soft" limiter; greater than 30 dB range
Gain Range : 55 dB; panel mounted membrane switches
Modulation : Dual bi-color LEDs indicate modulation of -20, -10, 0, +10 dB referenced to full modulation
Frequency Response : 35 Hz to 20 kHz (+/-1dB)
Low Frequency Roll-Off : Adjustable for -3 dB @ 30, 50, 70 Hz
THD : 0.2% (typ. 100 Hz to 20 kHz)

Signal to Noise Ratio :
SmartNR Off - no limiting 103.5 dB, limiting 108 dB
SmartNR Normal - no limiting 107 dB, limiting 111.5 dB
SmartNR Full - no limiting 108.5 dB, limiting 113 dB

Dynamic Range : 125 dB (with full Tx limiting)

Controls and Indicators :
Power/Phantom "ON-OFF" switch
Phantom voltage selector switch
Audio input gain knob
LCD w/membrane switches
LED audio level indicators

Audio Input Jack : Standard 3-pin XLR (female)
Phantom Power : Off; 5V @ 18 mA max; 15V @ 15 mA max; 48V @ 4 mA max
Antenna : Housing and attached microphone form the antenna
Battery : Two 1.5 Volt AA lithium or rechargeable NiMH recommended

Battery Life :
Alkaline - No Phantom 5 hrs, 48V on 3.5 hrs
NiMH 2500 - No Phantom 9.25 hrs, 48V on 7 hrs
Lithium - No Phantom 16 hrs, 48V on 12.75 hrs

Emission Standard : 180KF3E
Dimensions : 10.8 x 4.1 x 3.5 cm (4.25 x 1.62 x 1.38 in)
Weight : 190g (6.7 oz) without batteries