. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . rage battery. Thisbattery supplies all the power required for transmittingand receiving. The total amount of power drawn by theequipment when transmitting is approximately 30 amperesat 32 volts, direct current, while in receiving, the cur-rent is approximately five amperes. This is the currentrequired by the receiver dynamotor and the receiverfilaments. The loud speaker used in both engine and caboose is ofa special type capable of producing a maximum amountof voice volume, and designed speci
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . rage battery. Thisbattery supplies all the power required for transmittingand receiving. The total amount of power drawn by theequipment when transmitting is approximately 30 amperesat 32 volts, direct current, while in receiving, the cur-rent is approximately five amperes. This is the currentrequired by the receiver dynamotor and the receiverfilaments. The loud speaker used in both engine and caboose is ofa special type capable of producing a maximum amountof voice volume, and designed specially for these trainsets. One loud speaker is bolted to the roof of the cabover the enginemans head. The other is mounted to theroof inside of the caboose. The opening for the soundis protected by means of a heavy wire screen so that anaccidental blow will not damage the sound producing unitinside. Excellent speech quality is obtained from this loudspeaker, obviating the use of a head-set. The antenna on the locomotive consists of a brass pipemounted around the water tank of the tender. It is sup-. Rear of Tender Showing Radio Equipment and Antenna ported on insulators about 12 inches above the metalframework and is so low that it does not interfere withtakin- on water and coal. It was found advisable to mountit on the tender instead of the locomotive boiler. On thecaboose a simple wire antenna is provided. Before leaving the Selkirk Yards the observers in-spected a similar type of radio telephone transmission inuse there on a switch engine serving the hump over whichfreight cars run in the classification process. In this casethe hump locomotive is equipped with a radio receiverand loud speaker, and the engineer is directed by voiceinstructions from the yard master direct. This apparatushas been in service for several months and is giving verysatisfactory results, particularly in stormv or foggyweather, when the older signal methods were difficult tocarry out. Prevention of Exc
Size: 2515px × 994px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
