BSTJ 1: 2. November 1922: Application to Radio of Wire Transmission Engineering. (Espenschied, Lloyd) (1922)
leaf 20
reference to Fig. 9. At the bottomof the figure is shown schematically a one-way radio system. Aboveit is depicted the voice-frequency band, showing the manner in whichit is shifted by modulation up to the carrier frequency range, and atthe receiving end, by detection, back to the voice frequency… … Fig. 9 tion. Upon modulation with the carrier the reference point of thevoice frequency band is shifted from zero frequency (direct current)up to the carrier frequency as shown at 62 where the two side bandsappear. The effect of modulation is, therefore, simply to shift theband of signaling…
Transmission · Wire · Radio · Carrier · Interference · Attenuation · Loss · Receiving · Antenna · Amplification · Transmission levels · Side band · Wire transmission · System technical · Transmission loss · Bell system · Transmission equivalent · Technical journal · Transmission level · Radio transmission
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
