Question E1D05:
[97.213(d)] What must be posted at the location of a station being operated by telecommand on or within 50 kilometers of the Earth’s surface?  

Choices:  
A: A photocopy of the station license  
B: A label with the name, address, and telephone number of the station licensee  
C: A label with the name, address, and telephone number of the control operator  
D: All these choices are correct    

Correct Answer is  D: All these choices are correct  

To comply with FCC 97.213(d), a telecommanded amateur station on or within 50 km of the Earth’s surface must have three items posted at the station location (or control point):

- A photocopy of the station license
- A label with the name, address, and telephone number of the station licensee
- A label with the name, address, and telephone number of the control operator

Why the correct answer is correct:
- Choice D is correct because 97.213(d) explicitly requires all three postings for terrestrial telecommanded stations (i.e., on or within 50 km of Earth’s surface).

Why the other choices are incorrect:
- A: Incomplete. The license copy alone is not sufficient; contact info is also required.
- B: Incomplete. Licensee contact info alone is not sufficient; the license copy and control operator info are also required.
- C: Incomplete. Control operator contact info alone is not sufficient; the license copy and licensee info are also required.

Rules of thumb:
- Terrestrial telecommand (within 50 km): Post all three items listed above at the station/control point.
- Space stations (beyond 50 km): Governed by different rules (97.207); the terrestrial posting requirement of 97.213(d) does not apply.