*Question E2B09:
What kind of receiver can be used to receive and decode SSTV using the Digital Radio Mondiale (DRM) protocol?*  

*Correct Answer is  D: SSB*  

### AI Response: (may contain errors)  

To understand which type of receiver can be used to receive and decode SSTV using the Digital Radio Mondiale (DRM) protocol, let's break down the options:

### Correct Answer: SSB (Single Sideband)

1. **Why SSB is correct:**
   - SSTV (Slow Scan Television) is typically transmitted using SSB modulation. 
   - SSB allows for efficient use of bandwidth and is well-suited for voice and image transmission over HF (High Frequency) bands, which is where SSTV is commonly used.
   - DRM is a digital broadcasting system that can also be used to transmit SSTV images, and SSB receivers can decode these signals effectively.

### Why the other choices are incorrect:

2. **A: CDMA (Code Division Multiple Access)**
   - CDMA is a digital cellular technology used primarily for mobile communications. It is not designed for SSTV or DRM transmissions, which are typically broadcast rather than point-to-point communications.

3. **B: AREDN (Amateur Radio Emergency Data Network)**
   - AREDN is a network protocol used for digital communications in amateur radio, primarily for data and not for SSTV. It does not directly relate to the reception of SSTV signals.

4. **C: AM (Amplitude Modulation)**
   - While AM can be used for audio transmissions, it is not the preferred method for SSTV. SSTV requires higher fidelity and bandwidth efficiency, which SSB provides better than AM.

### Summary:
- **SSB** is the correct choice for receiving and decoding SSTV using DRM because it is specifically designed for efficient transmission of audio and image data in amateur radio.
- The other options do not align with the requirements for SSTV transmission and reception.

### Useful Rule of Thumb:
- For SSTV and similar digital modes, always consider modulation types that maximize bandwidth efficiency and signal clarity, such as SSB.