The IK2PIH website
I have always been interested in computer
science although my studies led me to deepen different topics (electrical
systems and industrial automation). I was lucky enough to learn the
first elements of programming in a stimulating era (mid-1980s) during
which home and personal computers became popular. At that time
computer owners could easily write their own programs by themselves
without having a specific formal education, thanks to the simplicity of
systems and development tools. Since then, however, things have changed:
nowadays hardware and software are so complex that the creation of
software is a matter for specialists and, since the majority of computer
users have no interest in programming, development tools have even been
removed from most end-use systems. The pleasure of developing simple
programs in a language, C, which I learned later and that fascinated me
for its flexibility and power, remained from those years. I also became
interested in telecommunications, obtaining the amateur radio license and
participating in various activities in the early 90s. Starting from
the second half of the 2000s, thanks to the greater availability of
second-hand TNCs, I first rediscovered the packet radio and subsequently
the APRS, combining my interest in telecommunications with that for
computer science. This site was born from the desire to keep and
share the materials I have produced over the years.
=========== APRS ===========
An ebook about APRS performance evalutation and
possible new arrangements of the APRS network.
Italian version (downloadable pdf) - Versione italiana (pdf scaricabile):
Alohasim, an aloha protocol simulator (pure and slotted) written in C.
====== C PROGRAMMING ======
C functions to draw monochrome graphics in xbm format.
Header file for C floating point double precision matrix computation and linear algebra with examples of use.
====== OTHER SOFTWARE ======
World wide locator calculator, calculates locator given longitude and latitude and beam heading and distance between locators.
The same world wide locator calculator, written in BASIC V2 for the Commodore home computers.
A small program written in 6502 assembly language that transforms the old C64 into a CW keyer.
====== MISCELLANEOUS ======
A short description of an HF antenna system operational in the mid '90s.
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