The KC Simulcast Repeater System is a network of synchronized VHF repeater sites that operate together as a single repeater. The system provides seamless coverage throughout the Kansas City metropolitan area and surrounding counties, allowing operators to remain on one frequency while traveling.
A simulcast repeater system uses multiple repeater sites that transmit the same signal on the same frequency at exactly the same time. This creates one large coverage area instead of several individual repeaters.
The system was built by local amateur radio operators who wanted a better mobile operating experience. Instead of changing frequencies or switching between linked repeaters while driving, operators can stay on one frequency and continue their conversations across the coverage area.
No. Any VHF amateur radio capable of operating on the system's frequency and configured with the correct offset and CTCSS/DCS tone can use the repeater.
No. One of the biggest advantages of the KC Simulcast system is that you remain on the same frequency as you travel throughout the coverage area.
Your radio doesn't select a specific repeater site. It simply communicates with whichever site provides the strongest signal at your location. The simulcast network handles the rest automatically.
Absolutely! The system is designed to provide reliable coverage for both local operators and visitors traveling through the Kansas City area.
Yes. All properly licensed amateur radio operators are welcome to use the system while following FCC regulations and good amateur radio operating practices.
Yes. The KC Simulcast Repeater System is designed to support emergency communications, public service events, and community activities when needed.
The system is built, operated, and maintained by a dedicated team of local volunteers who donate their time, expertise, and resources to keep the network operating reliably.
There are many ways to help! You can become an active user, volunteer your time, report coverage issues, or make a donation to help support equipment maintenance and future expansion.
If you notice an issue with the repeater or discover an area where coverage can be improved, please contact the KC Simulcast team through the Contact page. User feedback helps us continue improving the system for everyone.
Yes. Amateur radio clubs, public service organizations, and emergency communications groups are welcome to use the system for approved activities. Contact the system administrators if you have a special event or coordination request.
A conventional system uses different frequencies at different sites. A simulcast system uses one frequency across multiple sites, synchronized in time, providing seamless wide-area coverage.
When properly designed and synchronized, simulcast systems reduce interference rather than create it. Precise timing ensures overlapping signals work together instead of competing.
Simulcast systems typically use GPS-based timing or precision network timing to align transmissions down to microseconds.
No. While common in public safety, simulcast systems are also used in transportation, utilities, campuses, industrial facilities, and commercial radio networks.
Yes. Additional transmitter sites can be added to extend coverage, as long as they are properly synchronized and engineered.
Typically within ±1–5 microseconds, depending on modulation and receiver design.
They require precise RF engineering, network timing discipline, and careful site placement. Poor alignment can degrade performance more than a non-simulcast system.
Yes, but analog simulcast is more sensitive to delay spread and phase issues than digital modulation schemes.
Simulcast: multiple transmitters, same frequency
Multicast: multiple transmitters, different frequencies
Voting: multiple receivers selecting the best inbound signal
Yes, but adding sites increases delay management complexity and requires re-optimization of timing and RF overlap zones.