IN3OTD's Home Page

...always under (very slow) construction.

In these pages you will find some material related to my amateur radio activity; being an ham means (at least to me) mostly experimenting and I hope that the material you will find here will be useful also for your projects.

There are several (overlapping) sections, where I add new material every now and then, when I find something I think could be of interest also to other hams:

• For the homebrewers, the schematics area with some of the circuits I have built, with 12 bit and 18 bit parallel port ADC with complete schematics and C source code for Linux
• Some programs and online forms I have developed trying to solve some common design problems. Amongst them, selecting the best parallel and series combination for a given resistance value, designing coils and variometers and single turn loops, compute the inductance of arbitrary coils systems with fasthenry, design minimum-loss bandpass filters, rotary encoders, and so on...
  A C version of the diode mixer analysis program DIODEMX ! It includes noise and intermodulation analysis, conjugate-match calculations and graphical plotting of the results. It was derived from the Turbo Pascal sources of Stephen A. Maas, retaining all the original features. Thanks goes to Stephen for making the original Pascal sources available and for allowing me to release the sources under the GNU General Public License.
  glfer 0.3.4 released!
  This new version of glfer adds a beacon mode, to automatically repeat a predefined message and a visual threshold on the spectrogram display, to help in removing the visual background.
  As usual, you have the choice of three different spectral estimators, the Multitaper method, a high-performance ARMA spectral estimator and the classical periodogram!
  glfer is a Gtk+ application with a waterfall spectrum display and slow CW (QRSS) / dual-frequency CW (DFCW) trasmitter control interface.
  Full source code is released under the GPL, so everyone can contribute!
• Of course, there is also the pictures page, with my antenna and its variometer for the 137 kHz band and many others
  
  

Please don't forget to sign my guestbook!

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Last modified: Sun Feb 17 18:56:04 CET 2008