|Amateur Radio Station 9CXX, owned by Arthur A. Collins of Cedar Rapids, Ia. Note the efficient equipment and "calls heard" on the wall.|
SOME TIME ago it was discovered that extremely short radio waves, from five to forty meters in length, would cover distances far greater than those in common use. Their range was discovered to be practically as great in daylight as in darkness and static did not materially interfere with their reception.
Work of Young Amateurs is Responsible for Remarkable Development in Short Wave Work; Many Records Made by U. S. Boys
|1KW (left) and 50-watt (right) transmitters of Arthur A. Collins, 9CXX, of Cedar Rapids. It is with this equipment that the young amateur is achieving remarkable distance records.|
|Fig. 1. Wiring diagram of short wave receiver used by Arthur A. Collins for receiving messages and broadcasts from WNP, the Bowdoin of the MacMillan Arctic expedition. The two stage amplifier when used is added in the usual fashion. The circuit is the conventional regenerative patterned after Armstrong.|