12 Apr
2019
12 Apr
'19
11:19 a.m.
If they use one antenna for both AIS and APRS... (APRS was added as an afterthought, completed in six days, just a box, no antenna, no battery, no power panels.) If this is the case, AIS has thousands of ships all trying to work the antenna automatically. There are only a few hams trying to work APRS through the same antenna per pass. Without proper diplexing, how would this system not be blind to APRS ? AIS is ~160 MHz for ship to shore connections. Not sure what the sat connection freq would be for AIS. Maybe it is time for AMSAT India and Exseedspace to inform us hams here ?
KC9SGV
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