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Show GREAT BRITAIN VS. AMERICA Radio Amateurs of Those Countries Pursuing Distinct Courses in Development of Receivers. Two separate and distinct courses are being followed by the radio amateurs ama-teurs of this country and Great Brit-' Brit-' aln In the development of receiving apparatus for continuous-wave telegraphy teleg-raphy and wireless telephony. Both courses are of the utmost importance to the art, and each will exert a great Influence on the future of radio communication com-munication and entertainment. The American amateurs have gone along the lines of regeneration and amplification of audible signals, as well as development of long-distance reception on short waves by the superheterodyne super-heterodyne principle. On the other side of the Atlantic the British amateurs, restricted in their hobby by ultra-conservative government regulations, have turned their attention atten-tion solely to radio-frequency amplification. ampli-fication. This has given excellent results re-sults on all long and medium wave lengths, but its success on shorter wave lengths has depended solely upon r"ie expert handling of the operator, who has been compelled to use tuned coupling circuits between each of the radio-frequency vacuum tubes. It is too early yet to tell which of the two systems will ultimately triumph, tri-umph, but there Is no doubt that the laurels at the present moment rest upon the American amateurs through the latest achievement of their leader, Armstrong, in the production of the super-regenerative system. |