Deep Dive: G2E09
The correct answer is C: Joining an existing contact is not possible, PACTOR connections are limited to two stations. When using the PACTOR protocol, joining an existing contact is not possible - PACTOR connections are limited to two stations. PACTOR is a point-to-point protocol that only supports two stations. For amateur radio operators, this is a limitation of PACTOR. Understanding this helps when operating PACTOR.
Why Other Answers Are Wrong
Option A: Incorrect. Sending broadcast packets won't join an existing PACTOR connection - PACTOR only supports two stations, so joining isn't possible. Option B: Incorrect. Transmitting a steady carrier won't join a PACTOR connection - it would just cause interference. PACTOR doesn't allow joining. Option D: Incorrect. Sending a NAK code won't join a PACTOR connection - PACTOR is limited to two stations, so joining isn't possible.
Exam Tip
PACTOR = cannot join existing contact, limited to two stations. Think 'P'ACTOR = 'P'oint-to-'P'oint (two stations only). PACTOR connections are limited to two stations - joining an existing contact is not possible. Not about broadcast packets, carriers, or NAK codes - just two-station limit.
Memory Aid
PACTOR = cannot join existing contact, limited to two stations. Think 'P'ACTOR = 'P'oint-to-'P'oint. PACTOR connections are limited to two stations - joining is not possible. Point-to-point protocol limitation.
Real-World Example
Two stations are using PACTOR to exchange email. You cannot join this connection - PACTOR only supports two stations at a time. If you want to communicate, you must wait for the connection to end, then establish your own two-station connection. PACTOR is a point-to-point protocol.
Source & Coverage
Question Pool: 2023-2027 Question Pool
Subelement: G2E
Reference: 2023-2027 Question Pool · G2 - Operating Procedures
Key Concepts
Verified Content
Question from the official FCC General Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the G2E topic.