Home › Forums › temp › An amazing crystal set receiving loop on YouTube and some other ideas › Building vs. Buying
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Thanks, Bruce, for the link. The project brings to mind a question posed by one of my students. In order that our students gained hands on experience with components and soldering we had them build a Heathkit digital clock radio. These kits cost about $35 and one student asked me “Why would anyone build one for $35 when you can buy one built for $12?”
The fellow working on his crystal set could buy a radio and be done with it but many will recognize what is really going on here. It is the process and not the product he is pursuing. For example in the fourth video he is tuning and tweaking and jumping around the band listening and he is focused on getting the best reception he can and he is not concerned at all with the program content of the stations. His goal appears to be to develop the best crystal set he can rather than to sit and listen to programs or music.
In doing so, he has learned a great deal about the theory and practice of RF circuits. This happens when one pushes the technology to optimize performance and is the best way to gain knowledge.
There are those who say “I don’t care how it works, just so it works when I turn it on” which is fine since not all are interested in technology. But for those who are interested in technology projects such as this radio are great learning experiences as well as a chance to discover a new application or technique to improve on the way thing are done.
Many here know this because of the quest for getting the most range from their part15 transmitters. Some don’t care as long as the signal covers their house or yard but others want to push it to the limit. Both endeavors are fine depending on one’s goals but much can be learned by pushing the limits through experimentation guided by theory.
It was nice to see the fellow on the videos “pushing the limits” as he did and it is obvious that he has learned a lot about the subject.