OUR WIRELESS STATION'S ACTIVITIES 



hour earlier because of the earlier coming of dark- 

 ness farther east. Mr. Pinney's station has been 

 second only to the Ann Arbor one in its importance 

 in maintaining contacts with Mount Evans 

 throughout the year. 



In the critical stage of the flight when the plane 

 was down somewhere in the Hudson Bay country, 

 the transmitting condenser of the Mount Evans 

 radio plant burned through, sending heavy currents 

 through the generator and changing the polarity 

 of the output. The plant was out of commission 

 for about twenty-four hours, but thanks to Han- 

 sen's skill in supplying effective makeshifts it was 

 soon again in order. A little later contact 

 ceased altogether, just as radio connection had 

 been established between Mount Evans and Port 

 Bur well, where the plane had arrived, and where it 

 was necessary to send weather reports. For almost 

 a week failure to obtain contact continued, and 

 when it had at last been re-established, no ex- 

 planation could be offered except that of "fading". 

 For entire reliability at all times a combination 

 with the far more expensive and cumbrous long- 

 wave system seems under the present state of our 

 knowledge to be essential. It has already been 

 pointed out that with the aurora the short-wave 

 signals are much more blanketed than are the long- 



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