The EKJ&H is a quartz-controlled UHF headset wireless microphone system that provides reliable, high-quality signal transmission.
The EKJ&H comes with 3 units: the EKJ&H headset transmitter, the EKJ&H compact "connector-style" receiver, and a USB to USB-C charging cable.
16 frequency channels are available (50 channels for the 512 - 541 MHz model), allowing the system to be used with other wireless equipment simultaneously.
 
UHF 512 - 541 MHz or 863 – 865 MHz frequency band
Quartz locked modulation mode
Up to 20 meters range
Built in 3.7V/500mA lithium battery
5V USB-C charging cable included
Up to 4 hours autonomy
Multiple systems usable in the same location
EKJ&H – UHF PLL Headset
Transmitter
RF Channels
16 frequency presets (50 for 512 - 541 MHz model)
RF Frequency Band
UHF: 512 - 541 MHz or 863 – 865 MHz
RF Frequency Stability
±0,002%
RF Oscillation Mode
Quartz locked 
RF Modulation Type
Wideband FM Stereo
RF Output Power
10mW
Sub-harmonic
< 40 dB
Operating current
130 mA
Operating Time
3 to 5 hrs (depending on use conditions)
Operating Power Supply
3.7 V / 500 mA - built-in Lithium battery
Charging mode
USB charging 5V – type USB-C connector
Charging time
4 hours
Weight
0.50 Kg
 
 
EKJ&H –UHF PLL Receiver
RF Channels
16 frequency presets (50 for 512 - 541 MHz model)
RF Frequency Band
UHF: 512 - 541 MHz or 863 – 865 MHz
RF Frequency Stability
±0,005%
RF Oscillation Mode
Quartz locked 
RF Modulation Type
Wideband FM Stereo
RF Receiving Sensitivity
< -95 dBm
RF Receiving range
20 meters depending on used band conditions
Audio dynamic range
106 dBm
THD Distortion
< 0.5%
S/N Ratio
> 90 dBA
Audio output connector
6.3 mm Mono Jack
Output Power Max (continuous)
400 mW
Operating current
80 mA
Operating Time
5 hours
Operating Power Supply
3.7 V / 500 mA - built-in Lithium battery
Charging mode
USB charging 5V – type USB mini connector
Charging time
3 hours
Weight
0.05 Kg