Guanella with RG58 cable

Guanella Ballon

 ANOTHER PRESENTATION OF THE GUANELLA BALLOON

 1/1 guanella for my antenna. I tested them with 100w continuous tone for 1min. load of 50ohms/ 250w, from 80m to 10m. they remained absolutely cool. nanovna tester is very good . YO6NM (ex YO6QCM )

Home made antenna analyzer

Analyzer antenna LC measuring circuit

Masurarea circuitelor LC cu analizorul de antena. Vreau sa mentionez ca masoara extrem de precis frecventa de rezonanta . Succes la lipit ☺

schema receptor cu 12j1l

receptor cu reactie pe 80m

receptor cu reactie pe 80m cu tuburile 12j1l
alimentare cu 12 volti la anod

Regenerative receiver

O schema dupa n1tev, dar cu ceva modificari in partea de intrare . am folosit un trz. cu germaniu af239

Regenerative receiver and pcb

dds multiband

dds 7mhz

DDS MULTIBAND

dds multibandrealizat de mine dupa lu5djv

DDS 7MHZ

dds pe 7mhz realizat de mine cu atmega 328p, dupa o schema conceputa de ja2nkd

7Mhz Atmega328 dds-vfo

https://ja2nkd.blogspot.jp/foarte frumos si usor de realizat

Generator de radiofrecventa cu ad9850 si atmega328p

Un mic generator de radiofrecventa dupa AD7C cu unele mici modificari. Foarte bun pentru reglarea circuitelor de intrare ,medie frecventa etc. Functioneaza de la 1-30Mhz cu pasi in trepte de la 10Hz  la 1Mhz.

Analizor de antena cu arduino

https://lima05web.wordpress.com/2014/03/22/arduino-antennen-analysator-dg7eao/
https://lima05web.files.wordpress.com/2015/04/tft-display.pdf

teste initiale

LC-metru

LC-metru schema

https://sites.google.com/site/vk3bhr/home/index2-html

SCHEMA MULTI TESTER

     http://www.mikrocontroller.net/articles/Datei:Schaltplan_transistortester.png