MIPRO ACT-311 Single-Channel Diversity Receiver

• EIA standard 1/2U metal receiver.
• Receiver provides bias for booster where MIPRO antenna systems can be added for extended receiving range and stability.
• Backlit LCD displays group, channel, frequency, RF level, antenna selection, AF level, battery level indicator, interference warning indicator, and panel lock indicator.
• A lit green light indicates a working mode when receiver detects an incoming signal or buttons touched. Light dims automatically when receiver is idle for about 10 seconds.
• Balanced XLR / unbalanced 1/4 " audio output jack, output level switch and DC input are on the rear panel. One mixed-output switch is available for dual-channel receivers.
• High efficiency and low spurious PLL circuitry with Auto Scan functioin. Each receiver is presets with 11 groups, Groups 1~6, 7~10 have 8 &16 compatible channels respectively. Up to 8 channels in group 11 can be saved and recalled within 961 user-defined frequencies. A total of 112 preset channels per band.
• Worldʼs first ACT™ function provides precise and rapid frequency sync to the transmitters.
• Advanced diversity technology for optimum reception range and reduces signal dropouts and the "PiloTone & NoiseLock” dual-squelch circuits prevent noise interference.
• Adjustable ʽSQʼ for higher sensitivity to increase receiving distance and lower sensitivity to reduce interference.
• Industryʼs only RF interference warning indicator for ideal SQ level adjustment.
• DC input socket accepts 12~15V power supply.
• Matching ACT-30H handheld and ACT-30T bodypack transmitters.

System Specifications
Operating Frequencies: UHF band

Band C: 541.500 MHz to 566.375 MHz (996 frequencies)

Band D: 655.500 MHz to 680.375 MHz (996 frequencies)

Band I: 482.000 MHz to 507.000 MHz (1001 frequencies)

Not all frequencies are available in all areas. Please check with local regulations.

Minimum Frequency Step: 25 kHz

Modulation Mode: FM

Maximum Deviation: +/-35 kHz

Dynamic Range: > 110 dB (A-weighted), typical

Total Harmonic Distortion:
Operating Range: 100 m (300'), typical

Open range environment with no interfering signals.

Operating Temperature Range: -5o C to +45o C (23o F to 113o F)

Battery and LCD performance may be reduced at very low temperatures.

Frequency Response: 70 Hz to 15 kHz (+1 dB, -3 dB)

Receiver
Receiving System: True diversity

Image Rejection: 60 dB nominal, 55 dB minimum

RF Sensitivity: 20 dBuV at 60 dB S/N ratio

Maximum Output Level: XLR, balanced: +9 dBV; 1/4-inch (6.3 mm), unbalanced: +7 dBV

Antenna Input: BNC-type, 50 ohms

Bias voltage 12V DC, 60 mA, each

Power Requirements: 12-18V DC, 500 mA

Dimensions: 210.0 mm (8.27“) W x 164.4 mm (6.47“) D x 44.0 mm (1.73“) H
Not including BNC connectors or feet.

Net Weight: 1.1 kg (38.8 oz), without accessories

Accessories Included: Two flexible UHF antennas; AC adapter (country dependent); rack-mount adapters

Body Pack
RF Power Output    High: 30 mW, Low: 10 mW (switchable), at 50 ohms

Spurious Emissions: Following federal and national regulations

Input Connection: Four-pin Locking Connector
- Pin 1: GND
- Pin 2: INST INPUT
- Pin 3: MIC INPUT
- Pin 4: DC BIAS +5V

Batteries: Two 1.5V AA, not included

Battery Life:
- High: 6 hours (alkaline)
- Low: 8 hours (alkaline)

Depending on battery type and use pattern.

Dimensions: 66.0 mm (2.60“) W x 24.0 mm (0.94“) D x 87.0 mm (3.43“) H

Net Weight: 81 g (2.9 oz), without batteries Dimensions and Weight in PackagingChannel DShipping Weight: 5 lbs Shipping Dimensions: 15 x 13 x 4 in Channel CShipping Weight: 5 lbs Shipping Dimensions: 15 x 13 x 4 in Channel IShipping Weight: 6 lbs Shipping Dimensions: 15 x 14 x 4 in

Technical Data
 RF frequency range  518..... 866 MHz 
 Transmission/receiving frequencies  1440 
 Presets  4 
 Switching bandwidth  36 MHz 
 Peak deviation  +/- 48 kHz 
 Compander  HDX 
 Frequency response (microphone)  40.....18000 Hz 
 Signal-to-noise ratio  > 110 dB(A) 
 THD, total harmonic distortion   In compliance with  ETS 300422 , ETS 300445 , CE , FCC 
 Antenna connector  2 BNC, 50 Ohm 
 Audio-XLR connector  6,3 mm 
 Audio output level (balanced)  XLR: +18 dBu max 
 Audio output level (unbalanced)  Jack: +12 dBu max
 Power supply  10,5 - 16 V DC battery AA (Mignon)
 Dimensions (Receiver)  212 x 145 x 38 mm 
 Weight (Receiver)  1100 g 
 RF output power  30 mW 
 Power supply  2x 1.5 V battery AA (Mignon)
 Operating time (transmitter)  > 8 h 
 Input voltage range  1,8 V line
 Input voltage range  2,4 V line
 Dimensions (Transmitter)  82 x 64 x 24 mm 
 Weight (Transmitter)  158 g 

• The ACT-818 is a 1/2U single channel rack-mountable receiver with metal chassis.
• A full-color VFD (vacuum fluorescent display) provides clear viewing of all parameters. All controls are intuitive and easily accessible, allowing for quick and easy system setup via a single rotary control.
• Enhanced RF circuitry improves anti-interference characteristics and system compatibility with a 64 MHz-wide bandwidth, allowing more interference-free channels to be selected.
• New digital diversity receiving technology eliminates signal dropout and enhances receiving range.
• Full-range sound quality is not affected by the strength of RF signals or operating distance.
• Digitally-processed RF circuitry and DigitnamicPlus™ technology eliminates compander noise, assuring a wireless sound quality that easily rivals cable transmission.
• Improved proprietary Audio A/D Converter provides a true dynamic range of 115 dBA, T.H.D.
• AES3id Digital Audio Interface facilitates a direct connection to digital mixing consoles and transmits signal without distortion, ensuring a stable S/N ratio which will not deteriorate in long distance transmission.
• Proprietary 256-bit encryption provides secure audio transmission, preventing unauthorized listening.
• 10 built-in SmartEQ™ presets and user-defined microphone capsule equalization allows faithful sound reproduction to suit artistsʼ preferences.
• 10 built-in digital anti-feedback SmartEQ™ presets minimize feedback effectively without sacrificing sound quality.
• Optional MIPRO RCS2.Net software allows real-time network remote-controlling and monitoring of 64 systems.

• Ultra-compact, lightweight and rugged magnesium housing.
• 64 MHz wide bandwidth.
• Dual-antenna diversity design eliminates signal dropouts and enhances RF stability.
• lightweight, exceptionally durable magnesium alloy bodypack case.
• LCD screen displays audio & RF metering, battery status bar, group & channel, R/L balance.
• Selectable stereo, mono or mixed output mode.
• PLL-synthesized technology enables large compatible channels operation.
• ACT syncs the transmitter & receiver frequency automatically.
• Menu controls and indicators accessed by three buttons.
• S/N ratio > 95dBA (stereo receiving).
• 95dB stereo separation.
• 20 Hz ~ 15 kHz Frequency Response.
• 0.1% @ 1kHz distortion.
• Earphone output power 120mW @ 16Ω.
• Extended operating hours with 2 AA alkaline batteries.
• Dual unbreakable soft antennas.

• The ACT-828 is an EIA standard 1U dual channel receiver with metal chassis.
• A full-color VFD (vacuum fluorescent display) provides clear viewing of all parameters. All controls are intuitive and easily accessible, allowing for quick and easy system setup via a single rotary control.
• Enhanced RF circuitry improves anti-interference characteristics and system compatibility with a 64 MHz-wide bandwidth, allowing more interference-free channels to be selected.
• New digital diversity receiving technology eliminates signal dropout and enhances receiving range.
• Full-range sound quality is not affected by the strength of RF signals or operating distance.
• Digitally-processed RF circuitry and DigitnamicPlus™ technology eliminates compander noise, assuring a wireless sound quality that easily rivals cable transmission.
• Improved proprietary Audio A/D Converter provides a true dynamic range of 115 dBA, T.H.D.
• AES3id Digital Audio Interface facilitates a direct connection to digital mixing consoles and transmits signal without distortion, ensuring a stable S/N ratio which will not deteriorate in long distance transmission.
• Proprietary 256-bit encryption provides secure audio transmission, preventing unauthorized listening.
• 10 built-in SmartEQ™ presets and user-defined microphone capsule equalization allows faithful sound reproduction to suit artistsʼ preferences.
• 10 built-in digital anti-feedback SmartEQ™ presets minimize feedback effectively without sacrificing sound quality.
• Optional MIPRO RCS2.Net software allows real-time network remote-controlling and monitoring of 64 systems.