The Maryland Mobileers Amateur Radio Club operates and supports repeater systems that provide reliable communication for weekly nets, club activities, emergency preparedness, public service events, and everyday conversations. Licensed amateur radio operators are welcome to use the systems while following courteous operating practices.
Frequency: 146.805 MHz
Offset: –600 kHz
Transmit Frequency: 146.205 MHz
PL Tone: 107.2 Hz
Mode: FM Analog
Location: Millersville, Maryland
Call Sign: W3CU
EchoLink: Node 90911, KA2JAI-R
This is the primary MMARC repeater and is used for weekly nets, club communications, emergency preparedness, public service activities, and general amateur radio conversations. EchoLink access is available and is also used for club nets.
Frequency: 449.125 MHz
Offset: –5 MHz
Transmit Frequency: 444.125 MHz
PL Tone: 107.2 Hz
Modes: FM Analog
Location: Millersville, Maryland
Call Sign: W3CU
This newer repeater supports traditional FM analog. It automatically repeats the mode being transmitted, giving operators more flexibility when communicating.
Frequency: 442.300 MHz
Offset: +5 MHz
Transmit Frequency: 447.300 MHz
PL Tone: 107.2 Hz
Modes: FM Analog and C4FM Digital
Location: Annapolis, Maryland
Call Sign: KB3CMA
Ownership: Jointly operated with the Anne Arundel Radio Club
This jointly operated repeater expands regional coverage and supports both FM analog and C4FM digital communication. It strengthens cooperation between the Maryland Mobileers and the Anne Arundel Radio Club.
Join the Maryland Mobileers for our weekly roundtable net. The net includes club announcements, upcoming event information, amateur radio discussion, operating tips, and an opportunity for licensed operators to check in and connect with fellow hams.
Day: Monday evenings
Time: 7:30 PM
Repeater: W3CU 146.805 MHz
Offset: –600 kHz
PL Tone: 107.2 Hz
EchoLink: Node 90911
Receive: 146.805 MHz
Transmit: 146.205 MHz
Duplex: Negative
Offset: 0.600 MHz
Tone: 107.2 Hz
Mode: FM
Receive: 449.125 MHz
Transmit: 444.125 MHz
Duplex: Negative
Offset: 5.000 MHz
Tone: 107.2 Hz
Mode: FM
Receive: 442.300 MHz
Transmit: 447.300 MHz
Duplex: Positive
Offset: 5.000 MHz
Tone: 107.2 Hz
Mode: FM or C4FM
Radio menu names vary by manufacturer. Consult your radio manual for instructions on entering the frequency, offset direction, PL tone, and operating mode.
Listen first
Make sure the repeater is not already in use
Pause briefly after pressing the push-to-talk button
Identify with your FCC call sign
Leave a short pause between transmissions
Allow others an opportunity to join
Keep conversations respectful
Avoid overly long transmissions
Yield immediately to emergency traffic
Follow instructions from Net Control
Public service and directed nets take priority
Never intentionally interfere with communications
The W3CU 146.805 MHz repeater serves as a primary communications resource for Anne Arundel County ARES and RACES activities. During severe weather, emergencies, public service operations, or directed nets, routine conversations may be suspended. All operators should immediately yield to emergency and priority traffic. During severe weather, Skywarn activations, or emergency operations, please keep repeater traffic clear unless you have emergency or priority information to pass.
New to amateur radio? Having trouble programming your radio, accessing one of our repeaters, using EchoLink, or getting started with C4FM? Our members are always happy to help.
Yes. Licensed amateur radio operators may use the systems while following FCC regulations and courteous operating practices.
Check your transmit frequency, offset direction, PL tone, power level, antenna, and location
Usually not. The tone is normally required to transmit through the repeater.
C4FM is the digital voice mode used by Yaesu System Fusion radios. The 449.125 MHz and 442.300 MHz repeaters support both FM analog and C4FM digital operation.
Listen to Net Control, check in with your call sign, wait to be recognized, and follow the instructions given.
