. Annual report of the Board of Regents of the Smithsonian Institution . Fig. 2.—Wheatstone Transiviitter Used in Capacity Test of Wireless Fig. 3.—Talking by Relays from a Local Circuit. WIEELESS TELEPHONY FESSENDEN. 187 once made does not need to be altered.^ Of course, half the energyis lost, but this is a matter of practically no importance, as the cuttingdown of the strength of a telephonic conversation to one-half is as arule hardly noticeable, especially where there are no line noises ordistortion of the speech through capacity effects. Receiving station relay.—The receiving sta
. Annual report of the Board of Regents of the Smithsonian Institution . Fig. 2.—Wheatstone Transiviitter Used in Capacity Test of Wireless Fig. 3.—Talking by Relays from a Local Circuit. WIEELESS TELEPHONY FESSENDEN. 187 once made does not need to be altered.^ Of course, half the energyis lost, but this is a matter of practically no importance, as the cuttingdown of the strength of a telephonic conversation to one-half is as arule hardly noticeable, especially where there are no line noises ordistortion of the speech through capacity effects. Receiving station relay.—The receiving station relay is similar tothe transmitting relay shov»^n in plate 14, figure 1. The same remarksapply to its use in connection with wire lines as to the transmittingrelay. OPERATION. As will be realized from the above, the operation of a wireless tele-phone system is very simple. The ojDerator merely throws his switchto the position for telephoning and talks into an ordinary transmitterand listens in an ordinary telephone receiver. Wlien the duplexmethod is used, as is always advisable, the conversation proceedsexactly as over an ordinary
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