Dan (YO3GGX) - Simple projects you can build or use at home


Here you will find some pieces of software and hardware built at home during my very limited free time. New projects will be added as time goes by.
The newly posted or updated ones are first in the list, in each category, to easily find new things when you come back.
If you like my little projects and you would like to contribute with a small amount you can do it through PayPal using the icon below.

A local forum is available here for technical discussions about my projects.

So... let's start:


NEW experimental version! ( Sep 21, 2016)

  • Available for download here.
  • Forum thread discussing this version here.
  • Can be installed in the same time with the Play Store version,
    so you can compare them, both sharing the same config file.

    Pocket RxTx version 0.9.0-16

    Please read the updated user guide for changes.

    Offline User Guide (for versions 0.9.0-16) available here


  • NEW! (Sep, 21 2016)

    jAReC - (j)ava (A)udio and (Re)mote (C)ontrol v0.9.0-16
    jAReC mini v0.9.0-16 - console (no-GUI) version

    New in 0.9.0-16 (to be used only with Pocket RxTx 0.9.0-16 and up):

  • Heartbeat for the network connection
  • PTT over CAT, RTS or DTR
  • Set RTS and/or DTR line status
  • can use separate serial port for PTT
  • configurable TX timeout


  • Download new jAReC 0.9.0-16 from here
    Download jAReCmini 0.9.0-16 from here


    Offline User Guide jAReC 0.9.0-16(EN) available here
    Offline User Guide jAReCmini 0.9.0-16(EN) available here


    Download old jAReC 0.8.1 (only for Pocket RxTx 0.8.x) from here
    Download jAReCmini 0.8.1 (only for Pocket RxTx 0.8.x) from here

    Offline User Guide jAReC 0.8.1(EN) available here
    Offline User Guide jAReCmini 0.8.1(EN) available here

    Click on the left picture for more screenshots.

    (Jul 11, 2016)

    FT8x7EE v0.1 - Yaesu FT8x7 EEPROM analyzer

    Analyze the EEPROM data for Yaesu FT817/857/897 transceivers

    Download ft8x7ee v0.1 from here
    Offline User Guide FT8x7EE 0.1(EN) available here

    (Jul 1, 2016)

    CATconv - CAT protocol converter v0.2

    Use your new Yaesu FT-991 with the free version of HamRadio Deluxe (5.x)

    Download CATconv v0.2 from here
    Offline User Guide CATconv 0.2(EN) available here
    New in 0.2 - bug fixes (check the updated user guide)

    Click on the left picture for more screenshots.

    NEW version! ( Apr 17, 2016)

    Android app on Google Play Android app on Amazon AppStore

    miniVNA Android application version 0.9.6

    Offline User Guide available here
    Some sample data available here

    Click on the left picture for more screenshots.


    (Aug 30, 2015)

    Android app on Google Play Android app on Amazon AppStore

    Pocket RxTx version 0.8.1

    Please read the updated user guide for changes.

    Current and older free versions available for direct
    download (sideloading) here

    Offline User Guide (for versions 0.8.1 available here

    Click on the left picture for more screenshots.


    (weekly-monthly updates)

    Some of my 3D designs on Thingiverse

    ready to download (as STL files) and print

    (June 15, 2014)

    Coaxial/Optical Digital Audio Selector/Splitter.



    Click on the left picture for more screenshots.

    (June 15, 2014)

    LiIon USB charger.



    Click on the left picture for more screenshots.

    Android app on Google Play Android app on Amazon AppStore

    (Jan 28, 2014)

    NSCOM (was BNSCP) - (N)etwork and (S)erial (C)ommunication Tool version 0.3

    Offline User Guide available here

    Click on the left picture for more screenshots.


    Android app on Google Play Android app on Amazon AppStore

    (Feb 1, 2013) - obsolete

    Ham Radio Deluxe IP Server tester version 0.2.

    Offline User Guide available here

    Click on the left picture for more screenshots.


    (May 26, 2012)

    miniVNA Bluetooth interface version 1.0

    with full wireless operation .

    miniVNA Bluetooth interface version 2.0 (YO3IDN)

    Click on the left picture for more screenshots.


    (Apr 25, 2012)

    Portable and foldable Magnetic Loop antenna

    with remote tunning through the coax cable.

    Click on the left picture for more screenshots.


    (Jan 5, 2012)

    FT-8x7 DIY Bluetooth-CAT micro-miniature interface


    (Dec 4th, 2011)

    FT-817(ND)/FT-857/FT-897 DIY Data Modes miniature USB interface version 2



    (Nov 17th, 2011)

    FT-817 DIY Data Modes miniature USB interface

    only 40mm x 35mm x 20mm

    (Usually available 24/7) - experimental

    My WebSDR servers:

    - in Bucharest (KN34bk) for 80m/40m/30m/20m bands
    - in Bucharest (KN34bk) for 11m /2m/70cm bands (RTLSDR based)
    - in Breaza, 100km North of Bucharest (KN25te) for 80/40m bands



    (Nov 14, 2011)

    DIAX Windows Softphone>

    a full featured Windows Software Phone based on IAX2 protocol.

    (2006)

    InfraX version 1.7.0

    Infrared Remote Manager

    (2009,2015)

    SPCA version 1.2

    Serial Port Communication Analyzer
    - fixed a bug in baudrate setting in transparent mode
    - Updated contact data in the Help menu

    (sporadic updates)

    My QRZ page

    where you can find some more info about my HAM working conditions.

    Please click on the envelope to send me a mail.
    Latest update on Sep 21, 2016