Sunday, October 15, 2017

QRP CW transceiver under $20

!!!UNDERCONSTRUCTION!!!

This is idea from LZ1CLK (My friend Dobri Melin) for Direct Conversion QRP CW transceiver for any band between 1,8 and 10 MHz for less than $20.

I'm build new DDS with AD9833, Arduino, aluminum enclosure 100x60x40 mm, band change, step change. For CW QRP transceiver Forty-9er 40m. DDS is build and worked well.








Now I'm work on the transceiver stage.
http://www.ebay.com/itm/Forty-9er-Kit-7-023MHz-Short-Wave-Ham-Radio-Telegraph-Transceiver-3W-CW-DIY/172808525224?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649


http://www.ebay.com/itm/MINI-MICRO-USB-Nano-V3-0-ATmega328P-CH340G-5V-16M-Micro-controller-board-Arduino/291906862007?ssPageName=STRK%3AMEBIDX%3AIT&var=590902858820&_trksid=p2057872.m2749.l2649





 http://www.ebay.com/itm/0-96-inch-128X64-OLED-LCD-Display-I2C-IIC-SPI-LCD-Drive-SSD1306-Arduino-51-STM32/282219549472?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649




ALL SOURCES AND SCHEMATICS:  

https://github.com/LZ1DPN/Forty-9er/

Arduino original example source code:
https://github.com/Billwilliams1952/AD9833-Library-Arduino
http://www.vwlowen.co.uk/arduino/AD9833-waveform-generator/AD9833-waveform-generator.htm

73 ES MNI DX'es!LZ1DPN