Which of the following is characteristic of an inverting linear transponder?

An inverting linear transponder translates an entire band of frequencies from an uplink to a downlink. Because it uses a subtractive mixing process (where the uplink frequency is subtracted from a local oscillator), several specific inversions occur simultaneously. First, the signal position within the passband is reversed; a signal at the high end of the uplink passband appears at the low end of the downlink passband. Second, the sideband is inverted: Upper Sideband (USB) on the uplink becomes Lower Sideband (LSB) on the downlink, and vice versa. Finally, Doppler shift effects are somewhat reduced because the shift on the uplink and the shift on the downlink are in opposite directions, partially canceling each other out. Since all these phenomena occur together, the correct answer is that all choices are correct.