On our last Fieldday on the Farm Eckenberg, amongst other things, a fox hunt competition had been held. This challenge created the desire to build an own bearing receiver. So we orde...
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Techniques of Amater Radio
With the explosive growth of computers and miniturised electronic systems, the question arises if there is still a future for amateur radio.
It is also pointed out that commercially available transceivers can outperform the home-made equipment at considerably lower cost. Furthermore congestion in the amateur frequency bands and interference caused by illegal broadcasting stations (often funded by national sources) make it difficult for the beginning amateur operator to make radio contacts.
The advent of multi-media computers, low cost microwave transistors, complex integrated circuits and new materials and components, has expanded possible remedies a great deal.
- Special digital modulation techniques, such as 'spread spectrum', can be used for point-to-point transmissions. A new domain for people who prefer to replace complex hardware by programming personal computers.
- Small size and low weight of today's equipment and the almost unlimited possibilities to travel to any place on earth, should appeal to the young adventurer.
- Working on ever higher frequencies is a challenge to the technically oriented amateur. Generating stable signals at microwave frequencies can be very difficult. Commercial interest in these frequencies is usually broadband, whereas radio amateurs mostly employ narrow bandwidth systems.
- New electronic components can be used in sensitive ultra high frequency transceivers, which can be used to bounce radio waves off natural obstructions, such as the moon (EME) or ionized layers in the athmosphere.
- Space communications, using amateur satellites, should appeal to the amateur with modest skills in communication practice and technology. It may occur that an amateur payload is sent on an interplanetary mission. This will require the efforts of many amateurs. The constructing of a ground station is comparable with that of an EME station and many of these will have to work under remote control, in a manner comparable to that of a radio telescope. This poses a challenge for the computer programmer as well as for the amateur oriented on radio techniques.
The Internet opens up this new field for radio amateurs who enyoy using their multi-media computer. The added value to Amateur radio could be
- Distribution of general information, radio bulletins, article
- Training and education
- Publishing club activities
- Remote and 'real-time' operation of equipment for experimental purposes
And there would be a lot more items to add in this list....
Here a report from Earnie regarding our All-HF-Band-WSPR-Beacon V53ARC:
This is the second time this has happened in the six weeks or so I've been running WSPR receive-only from home, using...
Although I am licenced I would not call myself a radio amateur, or even a HAM, for this requires more enthusiasm towards the hobby and more technical comprehension than I am p