\u3082\u3046\u3001\u5149\u901a\u4fe1\u3060\u306d\u3002
\n—– Forwarded Message —–
\nFrom: “Sergei RW3BP”
\nTo: moon-net@nlsa.com
\nCc: “Barry Malowanchuk” , “Al Ward”
\nSent: Wednesday, February 20, 2013 1:05:38 AM
\nSubject: 77.5 GHz EME<\/p>\n
Last weekend (February 17) I tried my first echo test on 77.5 GHz. The weather was good for the test. No clouds, temperature -7C, humidity 85%.
\nTransmitted signal was simple “E” – 25% on and 75% off with 0.7s period. Three periods to transmitt and five periods pause to switch TX\/RX and to receive. Echo signal was -20…-22 dB under noise in ref to 3 kHz BW. To detect echo signal I used my MWCW program. The signal was well seen after 1 min averaging. Test was at elevatings from 30 to 50 deg. Moon noise was about 0.4 dB.
\nAntenna is 2.4m alu offset dish. Output power of TWTA is about 60W. Noise Figer of RX is about 6dB.<\/p>\n
73
\nSergei
\nRW3BP
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\u3082\u3046\u3001\u5149\u901a\u4fe1\u3060\u306d\u3002 —– Forwarded Message —– From: “Sergei RW3BP” To: moon-net@nlsa.c … <\/p>\n