*Question G1A01:
[97.301(d)] On which HF and/or MF amateur bands are there portions where General class licensees cannot transmit?*  

*Correct Answer is  C: 80 meters, 40 meters, 20 meters, and 15 meters*  

### AI Response: (may contain errors)  

To understand which HF and/or MF amateur bands have portions where General class licensees cannot transmit, we need to look at the band allocations and privileges for different license classes.

1. **Correct Answer: 80 meters, 40 meters, 20 meters, and 15 meters (Choice C)**

   - **Explanation**: On these bands, there are specific sub-bands reserved for Amateur Extra class licensees. General class licensees have access to most of these bands but are restricted from transmitting in certain segments.
   - **Example**: On the 80-meter band, Generals can operate from 3.525 MHz to 3.600 MHz, but the segment from 3.600 MHz to 3.700 MHz is reserved for Extra class licensees.

2. **Why the Other Choices are Incorrect**:

   - **Choice A: 60 meters, 30 meters, 17 meters, and 12 meters**
     - These bands do not have sub-bands reserved exclusively for Extra class licensees. Generals have access to the entire band, subject to mode restrictions.
   
   - **Choice B: 160 meters, 60 meters, 15 meters, and 12 meters**
     - Similar to Choice A, 160 meters and 60 meters do not have sub-bands reserved exclusively for Extra class licensees. The 15-meter band does have restrictions, but the inclusion of 160 and 60 meters makes this choice incorrect.
   
   - **Choice D: 80 meters, 20 meters, 15 meters, and 10 meters**
     - While 80, 20, and 15 meters have Extra-only segments, the 10-meter band does not have such restrictions for General class licensees.

3. **Useful Rules of Thumb**:

   - **General Class Restrictions**: Generals have access to most HF bands but are restricted from certain segments reserved for Extra class licensees.
   - **Band Plan Familiarity**: It's important to be familiar with the band plan and know which segments are reserved for higher license classes.

By understanding these band allocations and restrictions, you can determine where General class licensees are not allowed to transmit.