[Specification]

ACT-74 Quad-Channel True Diversity Receiver
Frequency Range – UHF (country dependent)
Bandwidth – 72 MHz
Sensitivity – 6 dBμV at S/N > 80 dB
S/N Ratio – > 108 dB (A)
Frequency Response – 50 Hz ~ 18 kHz, with high pass filter
Audio Output – Single channel output or mixed output. 3-level switchable

ACT-70HC Rechargeable Handheld Transmitter
Frequency Range – UHF 480 ~ 934 MHz (country dependent)
Bandwidth – 72 MHz
Deviation – < ±40 kHz
Spurious Emission – ≦ -55 dBc
Gain Setting – 6 dB, 3 dB, 0 dB, -3 dB, -6 dB (five settings) 0 dB = microphone capsule sensitivity

ACT-70TC Rechargeable Bodypack Transmitter
Frequency Range – UHF 480 ~ 934 MHz (country dependent)
Bandwidth – 72 MHz
Deviation – < ±40 kHz
Spurious Emission – ≦ -55 dBc
Gain Setting – 12 dB, 6 dB, 0 dB, -6 dB, -12 dB (five settings) 0 dB = microphone capsule sensitivity