C4FM Digital Voice Repeater

440 Standalone Yaesu
The 443.350 standalone repeater has been upgrade to the Yaesu System Fusion, supporting both C4FM and analog voice transmissions. We welcome you to try it out! If you hear strange tones on the repeater, transmitting with FM voice will change the output to FM for the duration of the QSO.

WB3DZO Data Repeater

The WB3DZO Data Repeater is a network of 802.11n sector antennas using 5 MHz channels on the 5 GHz amateur allocation. Using a Ubiquiti NB5g25 dish mounted on a house’s roof, coverage should be possible in these areas:
House coverage

Channels are 5 MHz, and are on 5870, 5890, and 5910 MHz. Contact us for help with alignment!

Clubs wishing to link in to the BRATS backbone can contact us as well – we’ll evaluate the best way to link up.

W3WCQ/R ATV Repeater

Located in Baltimore, Maryland, W3WCQ/R is one of the first ATV repeaters in the United States. Maintained by the BRATS, W3WCQ/R has been in operation since the mid 1970’s. Located entirely at a single site in Northeast Baltimore, the repeater operates on 439.25 MHz output and 911.250 output with 426.25 MHz input and 1253.250 input. ATV Quick Start provides an introduction to Amateur Television (ATV). If you don’t see activity on the ATV repeater, give a call on the FM repeater system (147.03+, etc.) to announce your interests. Weeknights around 9:00 pm. and during FM nets are particularly popular for video activity.

WB3DZO Linked FM Repeater System

This wide-area repeater is located in Baltimore, Maryland, WB3DZO/R is a very popular FM repeater system. WB3DZO/R is the host frequency of nets on most days of the week. Maintained by the BRATS, WB3DZO/R has been in operation since the mid 1970’s and has been recently upgraded with a new software-based controller. Located on a single transmit site and multiple receive sites in Baltimore, the repeater supports emergency service and rag-chewing. Frequencies: 147.030+, 224.960-, and 448.325-

WB3DZO Portable Repeaters

The BRATS maintain both 2m and 70cm portable repeaters on the TMARC-authorized Shared, Nonprotected Pairs. These repeaters are used for special events on 145.170+ and 442.900+.

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