Ham Radio Extra Class Practice Test

Which of the following types of signals can be relayed through a linear transponder?

1. FM and CW

2. SSB and SSTV

3. PSK and Packet

4. All of these choices are correct

The correct answer is: All of these choices are correct

A linear transponder is designed to receive an input signal and relay it at a different frequency, typically acting as a communication relay for various modes of operation. It is characterized by its ability to handle a broad range of signal types because it does not discriminate based on modulation schemes. This means it can take incoming signals in one format and allow them to be retransmitted in the same or different format, depending on the setup. FM (Frequency Modulation) and CW (Continuous Wave) are basic modulation schemes that many amateur radio operators use and can easily be accommodated by a linear transponder. Similarly, SSB (Single Sideband) and SSTV (Slow Scan Television) are also compatible, as they are common modes used in amateur radio for voice communications and image transmissions, respectively. Furthermore, digital modes like PSK (Phase Shift Keying) and Packet radio can also be relayed through a linear transponder. These modes utilize data encoding techniques that fall under the capabilities of the transponder. Given the operational flexibility of linear transponders across these various signals—regardless of whether they are analog or digital—it becomes evident that all the mentioned signal types can be relayed, reinforcing why the answer encompasses all the options presented.