John operates and maintains the WB3GXW repeaters
in Calverton (Silver Spring), Maryland. They are believed to be the closest repeaters to the I-95/495 split North of Washington, DC.
The 2-meter repeater operates on an output frequency of 147.225+ and the 70cm repeater operates on 444.250+. The 2-meter machine has an autopatch; both systems require the use of PL tone 156.7 (5A).
John generally opens up the autopatch on holidays as a convenience to travellers. Just give a yell for John or a control operator.
The Laurel Amateur Radio Club uses the 147.225 repeater for its weekly nets. The PL tone is usually disabled during nets to allow those without PL capability to participate in the net.
John is also the coordinator for the Laurel VE test sessions, net control operator for the Tri-County Amateur Radio Club weekly nets, and rebroadcasts Amateur Radio Newsline Saturdays at 8pm and Sundays at 8:30pm.
Photo of "The Tower"
AutoCall Cover, Ethel Smith (K4LMB)