Amateur Radio
Digital Voice and Data





KC3FHC formally KB3TOG was placed on the air as a standalone 70CM and 23CM repeater in late 2007. In January 2013 the repeater joined the US Trust Server system and was linked to the gateway in January of 2014. The repeater is running the latest version of ICOM G2 software, DPLUS and the IRCDDB Gateway Add-on. The IRCDDB gateway add-on supports CCS call sign routing via DTMF codes and fast updating of DPRS/APRS and last heard data.

System Information





Linked to








447.98750MHz z













US Trust System Status

ircDDB System Status

Register for Gateway Access

Configuring your transceiver to access the KC3FHC repeater and gateway via RF

Your ability to reach the repeater via RF will depend on the height of your antenna system, local terrain and transmit power. In some cases you will be capable of hearing the system but will not be able to access the repeater via your transmitter.

KC3FHC B is currently linked to W3DHSr. The repeater can be linked to other reflectors. However, we ask that you remember to relink the repeater when finished with your conversation on other than the default link.

To access KC3FHC via RF:
My Call: your FCC assigned call sign
Your Call: CQCQCQ
Repeater 1: KC3FHC  X (module letter must always be in the 8th position of the Repeater 1 field)
Repeater 2: KC3FHC  G (the G is in the 8th position)

Valid values for the 8th position of the Repeater 1 field:
C – 2M module
B – 70CM module
A – 23CM module

If a “G” is not in the 8th position of Repeater 2 you will hear audio from linked gateways, however, when you key up your audio will not be routed via the gateway to the reflector. It will only be broadcast via RF on the local repeater.

Please Observe Proper D-Star Etiquette.

When operating on the repeater please announce yourself with “this is <your FCC assigned call sign> listening on ,W3DHS, over”. This informs other linked stations that you are not on their local system and the use of “over” indicates you are through transmitting and awaiting a reply. Remember D-Star repeaters and most D-Star radios do not use courtesy tones when a microphone is un-keyed.

When using a gateway enabled repeater conversations are broadcast over all repeaters linked via a reflector. Remember to pause between transmissions and wait at least five seconds after the station you are speaking with un-keys before transmitting to allow another station to break into the conversation. Pausing between transmissions also provides repeater administrators and stations an opportunity to unlink their local repeaters via RF.

When using a D-Star radio equipped with GPS, on a gateway enabled repeater, ensure that your radio is not set to automatically broadcast your GPS coordinates. If it is set to automatic the radio will transmit location information while others are speaking and interfere with their transmissions. Set your radio to broadcast GPS coordinates only when you key the PTT to transit audio.

Please use the contact form if you have any questions about D-Star or the use of the repeater system..

Enjoy the expanded system and coverage…


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Maryland Auxiliary Communications Service
2220 Ady Rd - Forest Hill, Maryland 21050