While simplex nets require careful coordinating for direct radio-to-radio communication, most GMRS nets leverage a Repeater System. This approach provides broad, reliable coverage and ensuring that everyone can generally hear everyone else.
A repeater net uses a centralized, powerful transceiver and antenna on a high point, like the top of a tall building or tower. Everyone transmits to the tower, and the tower simultaneously re-broadcasts your signal to every other user on the frequency.
The Key Benefit: This “hub and spoke” structure removes most range anxiety. If you are within the repeater’s vast coverage area, you will be heard.
The GMRS Repeater 20 we most often use for our regular nets has a coverage radius of approximately 35 miles!
The NCS is the “traffic cop” of the net, managing the flow of conversation. Because everyone has direct access to the repeater, checking in is straightforward.
Listen First: As with any net, listen first to understand where the NCS is in the check-in process (e.g., calling by call sign suffix, region, or general call).
The Format (The “Standard”): Wait for the NCS to call for check-ins. When they open the floor, key up and provide your call sign and name, keeping it concise. Use the standard format:
“This is [Your Call Sign], [Your Name], [Your Location], with/without traffic.”
With broad connectivity, repeater nets excel at handling group discussions and club business efficiently.
“With Traffic” is prioritized by the NCS. You may be asked to hold your traffic until later in the net.
Handoffs: When the NCS allows, members often have free-form discussion. Be patient and wait for a break to key up. Always yield to the NCS when they need to regain control.
Phase |
What’s Happening |
What You Should Do |
| Opening | NCS announces the start of the net on the standard repeater frequency. | Listen closely to instructions. |
| Check-ins | NCS takes check-ins from all stations in the net coverage area. | Key up and provide your standard check-in (Call Sign, Name, Location, Traffic status). |
| Traffic Handling | NCS priorities “With Traffic” check-ins first. | Deliver your succinct traffic to the NCS when called upon. |
| Club Announcements/Discussion | Open floor for club news, announcements, or discussion. | Wait for the NCS to open discussion before keying up. Use standard net etiquette. |
| Closing | NCS closes the net and releases the repeater frequency. | Standard repeater frequency use resumes. |
Check Your Settings: Confirm you are on the correct repeater output frequency and have the correct input tone (PL) programmed, or the repeater won’t hear you.
Identify Correctly: Remember FCC rules: Identify with your call sign at the end of each transmission, and every 15 minutes.
Avoid Simplex “Relays”: Relays are rarely needed on a repeater net. If you cannot hear the repeater, a standard check-in will not work.
