Specification:
Item Type: Radio Medium Wave Transmitter Kit
Material: PCB
Power Supply: 9V2A DC, 5.5 Interface, Internal Positive and External Negative (Need to Provide Their Own Power Supply)
Transmission Frequency: 530‑1600KHZ (Radio Medium Wave Band)
HF Transmitting Power: Adjustable 20‑500 MW, Adjust The Power in 5‑10 Meters to Use.
Antenna: 1.5 Or 2.5 Square Millimeters in Diameter Household Wire Can Be Used, with A Length of 2‑5 Meters (Need to Be Self Provided)
Sound Input: 3.5mm On Both Ends, Comes with Board Accessories
Sound Source: CD, Desktop Computer, Cell Phone, Etc.
Applicable: Medium Wave Radio Enthusiasts, for Students to Study Wireless Signal Generation, AM Transmitter Sound Modulation Principles.

packing list:
1 x Transmitter
1 x Screw Package
1 x Instruction Manual
1 x Sound Cord

Note:
This motherboard is for medium wave radio lovers only and can be a good test for ore radio effects.