Ham Radio

                                                          13.8v / 30a power supply

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    FRI-Match ATU, a single-coil Z-Match type:  
 https://pa0fri.home.xs4all.nl/ATU/FRImatch/FRImatcheng.htm

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   Antenna Long Wire con Balun 9:1 

http://www.radioamatoripeligni.it/i6ibe/balun9a1/balun9a1.htm

https://www.youtube.com/watch?v=UHvWoiTwlDw

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                   Duplexer 144-430
http://www.i1wqrlinkradio.com/antype/ch31/chiave1802.htm

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                          PA  
  

                       2 Х 6П45Ц
         http://ra3ggi.qrz.ru/LAMP/990834.htm 

 https://pa0fri.home.xs4all.nl/Lineairs/Frinear400/frinear400eng.htm

                                     3 Х ГУ50

http://radioamator.ru/kv-i-ukv/usiliteli-moshchnosti-kv/111-usilitel-moshchnosti-na-3kh-lampakh-gu-51 

         QRP-трансивър с четири транзистора
          http://kn34pc.com/articles/4_tr_qrp.html 

                                                         

                            QRP Pixie  40м.

HAM RADIO 40M CW Shortwave Transmitter Receiver 7.023-7.026MHz QRP Pixie Kit DIY

+ LC Antenna tuner

+  CW Filter