PLANET Shortwave PLL Transceiver Kit CW Transceiver Telegraph Shortwave Radio

Origin:CN(Origin)
Certification:NONE
Model Number:PLANET Shortwave PLL Transceiver Kit CW Transceiver Telegraph-001

PLANET Shortwave PLL Transceiver Kit CW Transceiver Telegraph Shortwave Radio
Buying:
A The product is a DIY kit and requires the buyer to complete the welding and debugging by himself;
B kit installation is risky. Buyers should correctly evaluate their own technical level and equipment to avoid unsuccessful kit installation;
C Kit manual (electronic version) After purchasing the kit, ask for it from the shopkeeper;
D kits are shipped with scattered electronic components. The pictures of the finished products displayed in this store are for reference only when purchasing;
Has the following characteristics:
1. The SMD components on the main control board have been pre-welded and connected to the bottom board in the form of a stamp hole. The single-chip microcomputer uses PIC16F1938, built-in PLL local oscillator, supports crystal oscillator calibration settings, and comes with a frequency indicating circuit (using a seven-segment LED digital tube, the display unit is 1KHz, the picture has color difference, the actual color is red), the working frequency covers 7.000-7.100MHz, 1KHz or 100Hz stepping (refer to the figure below, switching).
2. Use TA2003 to mix for receiving and crystal filter for intermediate frequency. After TA2003 multiplication and detection, the volume is adjusted by digital potentiometer and sent to audio active filter circuit. Finally, the speaker is driven by LM386. The intermediate frequency supports calibration settings.
3. Use 3 BS170 outputs in parallel, Class E amplification, 12V power supply and output power of 5W!
4. Relay switching is used for sending and receiving, with the function of delay adjustment of sending report, which avoids frequent relay switching and improves the isolation of sending and receiving channels.
5. With the function of automatically sending call signs, it is very convenient to use. The single-chip microcomputer uses our code, which can adjust the code speed, side tone frequency, and side tone size, and can enter the call sign by itself (in automatic key mode), and supports power-off storage.
6. The PCB board of this kit can be conveniently placed in an 88*30*120mm aluminum case (the case needs to be prepared by yourself, and the hole size of the front and rear panels is in the net disk).
main indicators
Power supply: 12V
Working current: receiving 120mA @ 12V; transmitting 1A @ 12V
Transmitting power: 5W @ 12V
Frequency range: 7.000MHz-7.100MHz, 1KHz/100Hz step
Working mode: CW receiving and sending, SSB receiving