"These stations," he went on, "are all equipped with very high power, varying in wave length anywhere from 17,600 to 6,000 meters. Most of our stations are pretty powerful, anyway. Pearl Harbor, for instance, has a 13,000 wave length; Cavite 12,000; Sayville, 11,600; Tuckerton, owned by a French company, about 8,700; New Brunswick, New Jersey, 13,600; Marion, Massachusetts, 14,400; and Annapolis, 17,600. Only a few foreign stations can match these in range. Carnarvon has two wave lengths: 14,000 and 11,500; Lyons, 15,500; Nantes, 10,000; Rome, 11,500; Nauen, 12,550; Eilvese (Hanover), 15,000 and 9,600; and Stavanger, Norway, 9,600. There are many, however, that vary from 7,000 to 4,000 and can transmit messages by relaying them."
"I wish my set could send farther," Dick murmured regretfully.
"It sends as far as the law allows. We must therefore abide by Uncle Sam's judgment and be content. The scale is very carefully planned and the classifications made most intelligently, I think. Amateurs are limited to about a 200-meter wave length; low-power stations come next and are grouped under 1,600 meters. Of these the 750 wave is reserved for government stations such as radio compass stations, etc.; 600 meters is the commercial tune for large merchant ships; 476 that of submarines, aircraft, and small war vessels; and 300 meters is the commercial tune for small vessels. After that we pass into the higher group, all of which come under the head of medium-power stations. These range from 4,000 to 1,800 meters and first on the list are the government ships which have continuous waves and a length of from 3,000 to 4,000 meters. Following them come the experimental and miscellaneous stations with a 3,000 to 2,000-meter range; and after them the 1,800-meter class which is the commercial tune for continuous waves."
"And the high-power stations are the last, I suppose," put in Dick.
"Yes, those designed for trans-oceanic service. These range from 20,000 to 6,000 meters. The distinctions are, you see, quite positively made and everybody must keep within his assigned pigeon-hole."
"I reckon I'll keep in mine," announced Dick.
"I should advise it if you want smooth sailing," retorted Bob. "You will hardly——" but the sentence was never finished for a maid approached Mr. Crowninshield at the moment and whispered:
"The telephone, sir; New York is speaking."
"New York, Dad!" exclaimed Dick excitedly. "It may be Lyman or Dacie."
"More likely it is the office," replied his mother.