Model
 ACT-646
 Number of receiving channels: Four channels
 Chassis specifications: EIA standard 1U
 Receiving mode: CPU controlled automatic signal selection reception
 Carrier frequency band: UHF 620~934MHz
 Receiving antenna: Rear split design
 Default frequency number: There are 7 groups. The first 6 groups each preset 8 unconditional non-interfering frequencies, a total of 48 carefully selected frequencies. The last 7th group allows users to set and store 8 frequencies of their own preference.
 Oscillation mode: PLL phase locked frequency synthesis
 RF stability: ±0.005% (-10~50℃)
 Maximum deviation: ±68KHz
 Overall S/N ratio:>106dB(A)
 Overall THD: <0.5% @ 1KHz
 Comprehensive frequency response: 50Hz~18KHz
 Mute control mode: "Voice code and noise lock" dual mute control
 Volume output: The default setting is equal to the sound head sensitivity, and the user does not need to adjust the volume output
 Maximum output voltage
 Two-stage switch: Line and Mic
 Power supply: External AC power supply, 12~15V DC, 1A
 Dimensions (mm): 420(W) × 44(H) × 180(D)
 Weight(kg):About 1.75
 Matching transmitter: ACT-60H, ACT-60T
 Remarks
 1. Any errors in specifications are subject to the actual product.
 2. The carrier frequency range, maximum deviation, etc. have different specifications according to the radio regulations of each country.
 MADE IN TAIWAN