Here is a very interesting set of three article which were published in a 1920 magazine which is now copyright expired and in the public domain.Complete instructions are given for building a high efficiency,long range crystal receiver complete with its high efficiency earth and aerial system which have some unusual features.
This radio system was designed and built by a well know wireless engineer and inventor.His set was able to obtain exceptionally long range reception and had an unusual earth system which made it very stable and easy to use for people who were not well acquainted with the foibles of crystal radio.
Complete instructions are given with all the "secrets" which contribute to the performance of this radio.Well illustrated with circuit diagrams and drawings.A really interesting set of articles with great information for the crystal radio enthusiast. 1920 was the heyday of pioneer radio when everyone was experimenting with ways to get the best performance from their crystal sets. These articles were written by an expert in the subject and are fabulous information for the modern day crystal radio enthusiast. A lot of this eighty year old data is simply not to be found anymore unless you are lucky enough to come across some of these early magazines and plans which are now copyright expired and in the public domain. We have copied this material for your use.
Buy these now and add this invaluable information to your crystal set knowledge. You will find it to be still just as applicable now as it was in the 1920s in getting top performance from your crystal radio set. See my other auctions for more crystal radio items and other interesting stuff.
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