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Updated: July 17, 2025
Three wall telephones were changed to table phones on Mrs. Budlong's account, and Mrs. Talbot had hers put by the bed. She used to take naps while Mrs. Budlong talked and she trained herself to murmur, "Yes, dear," at intervals in her sleep. By means like this Mrs. Budlong kept Carthage more or less under her thumb. Carthage squirmed but it could not crawl out from under.
And while you're changing suits you'd better put on some stuff I've got here Service special phones and detectors. Stick this little disk onto your chest with this bit of tape; low down, out of sight. Just under your wishbone is the best place. Take off your wrist-watch and wear this one continuously never take it off for a second. Put on these pearls, and wear them all the time, too.
Lipton climbed up on the wing and motioned to Rick to put on the helmet and plug in his phones. There was a spare helmet-and-phone set in the rear seat for the Air Force officer. Rick switched the radio on and heard the soft hum of dynamotors. He cleared his throat and asked, "Do you read me?" "All right, Rick. Follow your check list and start the blowtorch going."
Where either a radio frequency transformer, that is one without the iron core, or an audio frequency transformer, that is one with the iron core, is used to couple the amplifier tube circuits together better results are obtained than where a high resistance grid leak is used, but the amplifying tubes have to be more carefully shielded from each other or they will react and set up a howling noise in the head phones.
That's so you've called him Perkins all along, but this is the first time I've seen him here, and I didn't put two and two together. His letters and 'phones about this supper came from in town somewhere. Why, he's Chris Parker, the biggest hotel man in the country. Nobody like him he'd make the deadest hotel in the loneliest hamlet pay in a month. Head of all the hotel organizations you can count.
With a vacuum tube detector, and especially with one having a gas-content, a potentiometer is very necessary as it is only by means of it that the potential of the plate of the detector can be accurately regulated. The result of proper regulation is that when the critical potential value is reached there is a marked increase in the loudness of the sounds that are emitted by the head phones.
Some of the busy stations in New York have to take care of 6,000 or more subscribers and 10,000 telephone instruments, while the city proper is criss-crossed with more than 60,000 lines bearing messages from more than 100,000 "'phones."
"They've made up one of the neatest amateur jobs I've seen in a long time. Let's see how it sounds." He and the doctor donned head phones, and Mr. Brandon manipulated the tuning coil and the crystal detector with a deftness that spoke of long experience.
For this set get a crystal detector, a two-slide tuning coil, a fixed condenser, and a pair of 2,000 ohm head phones. Mount the detector on the right-hand side of a board and the tuning coil on the left-hand side.
Next connect the ends of the telephone receiver cord to the posts a and b and connect a fixed condenser also with these posts, all of which are shown in the wiring diagram at B, and you are ready to adjust the set for receiving. Receiving Set No. 2. Use the same kind of a detector and pair of head phones as for Set No. 1, but get a loose coupled tuning coil, and a variable condenser.
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