Audio-Technica  AEW-4240a Single Handheld UHF Wireless SystemAudio-Technica AEW-4240a Single Handheld UHF Wireless System Cardioid Dynamic Mic, Frequency-agile True Diversity

Audio-Technica  AEW-4240a Single Handheld UHF Wireless System
Item Code
Microphone Windscreen
Extended Warranty
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AEW-R4100 receiver and AEW-T4100a cardioid dynamic microphone/transmitter.

Audio-Technica’s upgraded 4000 Series frequency-agile UHF body-pack and handheld wireless systems bring outstanding clarity and versatility to live performance, regional touring, fixed installations and more. At the heart of the 4000 Series is a rugged True Diversity half-rack receiver, the AEW-R4100, with 996 selectable channels offered in each of two available UHF bands. 

Receivers from both the 4000 and 5000 Series may be linked; they may be monitored by the 5000 Series system software. The included IntelliScan™ feature automatically determines and sets the best available frequencies on all linked receivers. 

Multiple system configurations are available, with handheld vocal microphone/transmitters and UniPak® body-pack transmitters designed for use with lavalier, headworn and instrument microphones as well as electric guitars. 


  • 996 selectable UHF channels per band and True Diversity reception for interference-resistant operation
  • Available in two frequency bands: 
    541.500 - 566.375 MHz (TV Channels 25 - 30) and 
    655.500 - 680.375 MHz (TV Channels 44 - 49)
  • IntelliScan™ feature automatically finds and sets best available frequencies on all linked receivers
  • Advanced digital Tone Lock™ squelch effectively blocks stray RF; the digitally encoded tone also communicates transmitter data for receiver display
  • Dual Compander circuitry processes high and low frequencies separately for unmatched audio quality
  • Link and coordinate multiple receiver channels
  • High-visibility white-on-blue LCD information display
  • Metal half-rack receiver chassis with mounting hardware
  • All transmitters offer rugged, ergonomic metal bodies, programmable features, soft-touch controls, and 10 mW/35 mW switchable RF power
  • Backlit LCD displays on transmitters
  • Locking battery door on UniPak body-pack transmitter
  • All components store up to five preset configurations, with customized "names" if desired


Operating Frequencies UHF band 
Band C: 541.500 to 566.375 MHz (996 frequencies) 
Band D: 655.500 to 680.375 MHz (996 frequencies)
Frequency Stability ±0.005%, Phase Lock Loop frequency control
Minimum Frequency Step 25 kHz
Modulation Mode FM
Normal Deviation ±5 kHz
Operating Range 300' typical
Operating Temperature Range 41° F (5° C) to 113° F (45° C)
Frequency Response 70 Hz to 15 kHz
Receiving System Dual independent RF sections, automatic-switching diversity
Image Rejection 60 dB typical
Signal-to-noise Ratio 115 dB at 40 kHz deviation (IEC-weighted, 75 kHz maximum modulation)
Total Harmonic Distortion <=1% (10 kHz deviation at 1 kHz)
Sensitivity 20 dBµV (S/N 70 dB at 5 kHz deviation, IEC-weighted)
Intermediate Frequency 65.75 MHz, 10.7 MHz
Audio Output - Microphone (ATTN switch at "0") 
25 mV (at 1 kHz, ±5 kHz deviation, 10k ohm load)
Audio Output - Instrument (ATTN switch at "0") 
50 mV (at 1 kHz, ±5 kHz deviation, 10k ohm load)
Audio Output Attenuator (ATTN) Three-position switch: 0 / -6 / -12 dB
Output Connectors (Microphone) XLRM-type (balanced)
Output Connectors (Instrument) 1/4" (6.3 mm) TS unbalanced phone jack 
Headphone Output Connector: 1/4" (6.3 mm) TRS ("stereo") phone jack 
Power Output: 10 mW + 10 mW at 1 kHz, ±5 kHz deviation into 32 ohms; maximum output, 220 mW + 220 mW into 32 ohms. 
Antenna Power DC 10V-12V, 20 mA (BNC-type jack)
Power Supply 100-240V AC 50/60 Hz; 8W 
Dimensions 8.31" (211.0 mm) W x 
1.74" (44.0 mm) H x 
9.26" (235.0 mm) D 
Net Weight 3.8 lbs (1.7 kg) 
Accessories Included Detachable IEC-type AC power cable; two flexible UHF half-wave antennas; link cable; rack-mount adapters 
RF Power Output High: 35 mW; Low: 10 mW, nominal
Spurious Emissions Under federal regulations
Dynamic Range >=110 dB, A-weighted
Microphone Element AEW-T3300a: Cardioid Condenser 
AEW-T4100a: Cardioid Dynamic 
AEW-T5400a: Cardioid Condenser 
AEW-T6100a: Hypercardioid Dynamic
Batteries Two 1.5V AA alkaline (not included)
Current Consumption High: 185 mA; Low: 165 mA, typical
Battery Life Approximately 6 hours (High); 8 hours (Low), depending on battery type and use pattern
Dimensions AEW-T3300a, AEW-T5400a: 9.41" (239.0 mm) long, 
1.97" (50.0 mm) maximum diameter 
AEW-T4100a, AEW-T6100a: 9.33" (237.0 mm) long, 
1.89" (48.0 mm) maximum diameter
Net Weight AEW-T3300a: 9.5 oz (270 g) 
AEW-T4100a: 9.7 oz (276 g) 
AEW-T5400a: 10.0 oz (285 g) 
AEW-T6100a: 9.7 oz (275 g)
Accessory Included AT8456a Quiet-Flex™ stand clamp

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