This is a updated collection of easy to build projects for radio amateurs and swl's.
Have fun.
73 John

Tuesday, October 12, 2010

Max.loop size for 20m. and projects




    15MM COPPER TUBING LOOP

    Magnetic loopantenna calculator by KI6GD :  http://www.standpipe.com/w2bri/software/loopcalc.exe
    The prog. doesn't have an icon, just klick in the white square above it's name .

    DO YOU LIKE TO EXPERIMENT WITH ANTENNAS ? 
    Here's all you ever wanted to know about VSWR :

      http://www.amateurradio.org.za/VSWR%20John%20Fielding%20Final.pdf

    SOME OF MY OTHER PROJECTS.
    First enlosure of the Iler . It turned out to be to big for fieldwork.
    Taurus 20 qrp ssb

    TAURUS 20M SSB TRX WITH PA 8WATTS
    PIXIE 20M. CW QRP LINE WITH TUNER      TOY TRX BUT FUN TO BUILD

     BANDPASS FOR 20M. AT FIELDDAYS IT'S MANDATORY
    http://www.arrl.org/files/file/Technology/tis/info/pdf/880

    STUBLOOP ANTENNA.      MADE OF 50 OHM COAX.  CIRCUMFERENCE IS 1 LAMBDA. VELOCITY FACTOR IS
     NOT USED !



    STUBLOOP JUNKTION BOX

    Disclaimer:I'm not responsable for any damage due to reproduction of my projects.

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