Electrical news and engineering . CAL NEWS 43 Ottawa, llic party trausfcred lo a train rctuniiii;; to different set ami a different antenna were used on tliereturii jonrney. The antenna was of teniiiorary constrnc-tion, consisting of one wire along each side of the ear,about 18 inches above the roof. The set contained (jncstage of radio frequency amplification, two stages audiofrequency amplification and a power amplifier connected tothe loud speaker. Near Trenton, ltd miles from Toronto, the first indica-tion of a carrier wave was received, which shortly aftertuned in to a concert b
Electrical news and engineering . CAL NEWS 43 Ottawa, llic party trausfcred lo a train rctuniiii;; to different set ami a different antenna were used on tliereturii jonrney. The antenna was of teniiiorary constrnc-tion, consisting of one wire along each side of the ear,about 18 inches above the roof. The set contained (jncstage of radio frequency amplification, two stages audiofrequency amplification and a power amplifier connected tothe loud speaker. Near Trenton, ltd miles from Toronto, the first indica-tion of a carrier wave was received, which shortly aftertuned in to a concert being broadcasted by station Toronto. This was at first only audible in the lieadphones. Ax Cobourg, 70 miles from ^., the loudspeaker was connected and the concert could be heard in thevicinity of the set. The volume gradually grew louder asthe distance decreased. When the train reached Oshawa,,S4 miles from the broadcasting station, the reception couldbe heard loudly and distinctly for four or five seats around. An automobile adaptation—set inside wtien in use the instrument. As the train drew nearer Toronto the radiusat which the broadcasting could be heard increased. Dur-this trip touch was kept with the sending station by tele-graph at the stations along the way and answers were re-ceived by radio. The passenbers in the rest of the traincrowded into the test car and showed keen interest. Beside.^announcements and music, several spark stations were pickedup, and code messages received very distinctly. On various other tests interesting results were leaving Ottawa a small broadcasting station washeard quite plainly for a distance of 30 or 40 miles, broad-casting music from a phonograph. A concert broadcasted atBuffalo was heard clearly as the train steamed into Affected by Charactet of Country Conditions in a rapidly moving train cliangc so rapidlythat perfect tunino is dit^cult. It is noticed that when(ravelling through a h
Size: 1492px × 1674px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, bookdecade1890, bookidelectricalnewsen31donm
