Practical takeaway
Choosing an operating frequency, calling another station, test transmissions, calling frequencies, and repeater offsets.
T2A · 11 pool questions
Choosing Frequencies, Calling & Repeater Offsets
Choosing an operating frequency, calling another station, test transmissions, calling frequencies, and repeater offsets.
Technician exam focus
This group contains 11 questions in the current pool. The teaching below keeps the important tested terms visible while explaining what they mean in normal Amateur Radio use.
1. Start by listening
Before transmitting, listen first and make sure the frequency is not already in use. On simplex, a brief “Is this frequency in use?” is a courteous way to check. A band-plan calling frequency is a place to make contact, not a frequency one station owns.
2. Repeater offsets are part of the channel
A repeater normally receives on one frequency and transmits on another. On the 2-meter band, a common repeater offset is plus or minus 600 kHz. On the 70-centimeter band, a common offset is plus or minus 5 MHz. Your radio must transmit on the repeater input while you listen to its output.
3. Calling and making contact
On simplex, a general call is commonly made with “CQ” followed by your call sign. On a repeater, it is usually enough to give your call sign and say whom you are calling or that you are monitoring. Leave a short pause between transmissions so another station can break in.
4. Tests still count as transmissions
When making on-air test transmissions, use the minimum time and power needed and identify the transmitting station. A dummy load is the better choice when the test does not need to go over the air.
T2A checklist
- Listen before transmitting and make sure the frequency is clear.
- A 2-meter repeater commonly uses a ±600 kHz offset.
- A 70-centimeter repeater commonly uses a ±5 MHz offset.
- Calling frequencies are shared meeting places, not reserved channels.
- On-air test transmissions still require station identification.
Exam scope: NCVEC 2026–2030 Technician Class (Element 2), effective July 1, 2026 through June 30, 2030, with February 19, 2026 errata. The current NCVEC pool is the exam authority; explanatory prose here is SPARKA teaching material. NCVEC pool