Tube Amplifier Kit Assembled with 6J2 Tubes, Preamp AMP Pre-Amplifier Board Headphone Buffer Kit, 6J2 is an upgrade from 6AU6, 6AK5, 5654
FM Mini Wireless Microphone Transmitter Bug, Operating voltage 3VDC Frequency range 85-115MHZ, Range 3-30 meters
Operating Voltage: DC 2V- 9V,
Current: 9mA @ 3V,
Distance: In the open 100 meters, 3-30 meters indoor environmental with obstacles. increasing the voltage will increase distance.
Operating frequency: 85MHZ --- 115MHZ (99-101MHZ default frequency)
To receive use an FM radio 88-108MHz.
Frequency adjustment: adjustable capacitor
Output Impedance: 50 ohms
Size: 2 cm * 1cm L*W