抄録
This report of long distince communieation test on short wave incudes the following items.
1. On the relation between wave length and range of communication.
2. The sending set used for this experiment.
3. The receiving set used for this experiment.
4. Roult of the experiment, and the conclusion.
(i) Almost no absorption in the air for short wave under one hundred meters during the night range of both stations.
(ii) Extrimely little statics and easy to receive signals on such short wave.
(The experiment is still going on, and the result will be published later.)
