Perfect DIY transceiver kit for radio amateur. It has increased many auxiliary functions which make it more practical.Features:This transceiver kit is a perfect DIY kit for radio amateur.Use STC12C4052 micro-controller， many auxiliary functions are increased: adjustable side-tone and transmission speed， flexible setting of built-in code.The circuit has the function of automatic identification of automatic and manual keys， as long as you correctly connect the manual button according to the manual.The local frequency is 7.023MHz when transmitting， the local frequency is 7.023-7.026MHz when receiving.Specific sign on the PCB， convenient for installation.Specifications:PCB Size: 11 * 7.7cm / 4.3 * 3inOutput Power: 8WPower Supply: 12V (battery or linear regulated power supply)Local Frequency: 7.023MHz(transmitting) 7.023-7.026MHz(receiving)Antenna: 50ohms，unbalanced (antenna is not included)Working Mode: CWPackage Size: 16.5 * 12 * 1cm / 6.5 * 4.7 * 0.4inPackage Weight: 96g / 3.4ozPackage List:1 * Set of DIY Transceiver Kit