11 
 
gateway (145.75 MHz, just across the street at Hughes). Set the IC-7100’s frequency.
 In 
the Winlink Express session window, the connection type should be “Direct” (in  other 
words, we are not using digipeaters to reach the gateway since these gateways are within 
simplex range of the hospital). Type the callsign into the connection box, and click Start. 
After a few seconds, the radio should begin transmitting and establish a connection with 
the Gateway. You are off to the races! 
 
You can also try these other stations: 
 
Potomac, MD (Bruce may be able to point 
a  beam  antenna  at  the  hospital  upon 
request) 
 
Unfortunately, the hospital is surrounded by substantial ridges in virtually all directions. 
This makes simplex VHF/UHF communications a bit of a challenge. You may or may not 
be successful in  reaching the stations listed above,  except for WA3YOO-10, which is 
literally across the street from the hospital. 
 
In a pinch, you should be able to establish a packet peer-to-peer (PTP) connection with 
another local station to relay any critical message traffic. It is also possible to make a 
Winlink connection over any of the RMS Gateway stations listed above, or even over a 
conventional  FM  repeater.  (You  may  need  to  increase  the  TxDelay  setting  to  several 
hundred milliseconds when operating over a voice repeater.) In an emergency, when the 
MCACS station at the Montgomery County EOC is activated, you can contact WA3YOO 
to request assistance in relaying Winlink messages. 
 
Corrected channel assignments chart and added instructions for programming 
a memory 
Information added on Winlink operation 
Updated Winlink information 
Minor edits to Winlink and memory programming sections. 
 Note that the Winlink Express program does not tune the radio when you switch to a different gateway 
station. This must be done manually. 
 If you cannot connect to N2LEE-10 directly, try digipeating through the RESTON digipeater.