Item Name: 3W Forty-9er Radio Transceiver Diy Kit For QRP Ham CW Receiver Telegraph. Product Description100% New and High QualityThis is a very small volume of simple 40 meter band micro-power amplitude telegraph transceiver.The new "Forty-9er" kit has the following characteristics:1, the output power is raised to 3W, power output using an American ring, it has a strong remote communication capabilities, enhance the Forty-9er practicality!2, increasing the side tone circuit, so that when you operate the transmitter, the headset can also listen to the keying signal, side tone circuit using an audio sine wave generator, the effect was significantly better than the ordinary sense of hearing frogs square wave generator.3, when the vibration frequency of the kit launch fixed 7.023MHz, when receiving the vibration frequency is 7.023-7.026MHz. PCB size is 6cm * 6cm.4, the kit can be easily placed in the PCB 65mm * 35mm * 100mm standard aluminum shell, the kit does not include this housing. If there is a need to contact me!The main index:Power: 12VReceive quiescent current: 23mA @ 12VEmission current: 450mA @ 12VTransmit power: 3W @ 12VFrequency range: the vibration emission 7.023MHz, receive local oscillator 7.023-7.026MHzTransceiver Distance: 100-300 km.Mode: CWCircuit Schematics:Receiving section for a typical straight LM386 NE602 plus variable receiver.Emitting portion utilizes the oscillation circuit NE602, and then to do the buffer amplifier 8050, 8050 also as the transmission key, the last stage is a class C amplifier D882, and then send the LPF after the antenna is connected. There sidetone launch.Kit Description:This kit is not soldered, all
