Net control station
| Net control station | |
|---|---|
| Abbreviation | NCS |
| Role | Opens, directs and closes a net |
| Main tools | A written preamble, a log and a station that hears well |
| Net styles | Directed (formal) and open (informal) |
| Supporting roles | |
| Alternate NCS | Takes over if net control drops out |
| Relay station | Passes along stations net control cannot hear |
| Net manager | Schedules NCS operators and keeps the net's records |
A net control station, usually shortened to NCS or simply "net control," is the station that runs a net, a scheduled on-air meeting of amateur stations. Net control opens the net, takes check-ins, decides who transmits and when, handles any messages, and closes the net when its business is done. The job calls less for a powerful station than for a calm voice, good listening and a tidy log, and many nets rotate it among several members so that no one operator carries every session.
The preamble
Most nets open with a preamble, a short script read word for word at the start of each session. A typical preamble gives:
- the name of the net and the net control operator's name and call sign;
- the net's purpose and schedule, and the repeater or frequency in use;
- whether the net is directed or open;
- how to check in, and a reminder that stations with emergency or priority traffic may break in at any time.
Reading the same script every week keeps the net consistent from one NCS to the next, and it reassures newcomers who are listening for the first time.
Check-ins and directed nets
In a directed net, no one transmits to anyone else without net control's permission. NCS usually calls first for emergency or priority traffic, then for mobile and short-time stations who can't stay long, and then for general check-ins, often grouped by call sign suffix or by area to keep stations from doubling (transmitting on top of one another). Each station gives its call sign and waits to be acknowledged. NCS then works through the list, recognizing stations with comments or messages and directing exchanges between them: "W1ABC, call K9XYZ and pass your traffic."
An open net, sometimes called a free net, is looser. Stations talk among themselves, and net control steps in only to keep order, recognize newcomers or give the net's identification. Many social nets are open; emergency and traffic nets are nearly always directed, because a directed net keeps the frequency clear for the traffic that matters most.
Net control also handles the net's station identification, giving its own call sign at least every ten minutes even while using a tactical name such as "Net Control."
Logging
NCS keeps a log of every check-in: call sign, name, time and any traffic. A paper sheet works, and many operators now use a spreadsheet or logging software with a net-logging feature. After the session, the log goes to the net manager, the person who schedules NCS operators and keeps the net's records. Traffic nets of the National Traffic System report the number of check-ins and the number of messages handled, abbreviated QNI and QTC in traffic-handling shorthand (see Q-codes).
Emergency traffic and relays
When a station breaks in with emergency traffic, everything else stops. NCS acknowledges the station at once, takes the message or puts the station in touch with whoever can act on it, and holds the rest of the net until the emergency traffic is cleared. ARES and SKYWARN nets train for this routinely, and an NCS in an emergency net may also keep a running list of which stations are assigned where.
Net control cannot always hear every station, especially on HF or with mobile stations on the edge of repeater coverage. A relay station who hears both sides can pass along a weak station's check-in or message. NCS often names a relay station and an alternate NCS at the start of the net, so that if net control loses power or drops out, the net carries on without confusion.
Training new net control operators
Most nets welcome new NCS volunteers, and running a net is one of the best ways to build operating skill. New operators typically start by listening, then serve as a relay or alternate, then take a quiet session with an experienced NCS standing by. Useful habits include writing down every call sign as it is heard, asking stations to repeat rather than guessing, using the phonetic alphabet for unclear calls, and keeping transmissions short. A net that runs smoothly is usually one where net control talks the least.