美团外卖是怎么收费的:未加密的卫星通信频率以及适合中国ＨＡＭ通信的业余卫星

未加密的卫星通信频率以及适合中国ＨＡＭ通信的业余卫星
　　注意，在没有取得相应的业余无线电操作证书和电台执照之前，
　　请不要进行业余卫星的通信实验！
　　Sat Mode Uplink Freq. Downlink Freq.
　　RS-10 [A] (SSB,CW) 145.860-145.900 29.360-29.400
　　T 21.160-21.200 145.860-145.900
　　K 21.160-21.200 29.360-29.400
　　K/A 21.160-21.200 and 29.360-29.400
　　145.860-145.900
　　K/T 21.160-21.200 29.360-29.400
　　145.860-145.900
　　Robot (CW) 21.120 or 145.820 29.403
　　Beacons (CW) 29.357, 29.403,
　　145.857,145.903
　　Note: RS-10 is down and may not return.
　　RS-12 A 145.910-145.950 29.410-29.450
　　T 21.210-21.250 145.910-145.950
　　[K] (SSB,CW) 21.210-21.250 29.410-29.450
　　K/A 21.210-21.250 and 29.410-29.450
　　145.910-145.950
　　K/T 21.210-21.250 29.410-29.450,
　　145.910-145.950
　　Robot (CW) 21.129 or 145.830 29.454 or 145.958
　　Beacons (CW) 29.408, 29.454,
　　145.912, 145.958
　　RS-15 [A] (SSB,CW) 145.858-145.898 29.354-29.394
　　Beacons (CW) 29.352.5
　　29.398.7
　　RS-16
　　Ground team was never able to activate the transponders.
　　AO-10 (SSB,CW) 435.050-435.155 145.850-145.955
　　Beacon (Unmodulated Carrier) 145.810
　　NOTE: If Beacon is FM'ing don't use it!
　　AO-11 (FM) No User Uplink 145.825 Primary
　　435.025
　　2461.5
　　AO-13 (SK) as of 11/24/96, Rentered Atmosphere 12/5/96.
　　Gone but not forgotten!
　　AO-16 Packet 1200bps 145.900, 145.920, 437.051 Primary
　　145.940, 145.960 437.026
　　2401.143
　　NOTE: Uplink via FM, Downlink via SSB (BPSK).
　　CALLSIGN: PACSAT
　　DO-17 [Packet] 1200bps No User Uplink 145.825 Primary
　　Digital Voice 2401.220
　　WO-18 Packet 1200bps No User Uplink 437.102 Primary
　　CCD Pictures 437.075
　　Note: Downlink via SSB (BPSK).
　　LO-19 Packet 1200bps 145.900, 145.880, 437.153 Primary
　　145.860, 145.840 437.125
　　437.127 (CW)
　　NOTE: Uplink via FM, Downlink via SSB (BPSK).
　　CALLSIGN: LUSAT
　　FO-20 [JA] (SSB,CW) 145.900-146.000 435.900-435.800
　　JD PKT 1200bps 145.850, 145.890, 435.910
　　145.910
　　JA Beacon (CW) 435.795
　　JD Beacon 435.910
　　CALLSIGN: 8J1JBS
　　UO-22 Packet 9600bps 145.900 Primary 435.120
　　145.975
　　CALLSIGN: UOSAT5
　　KO-23 Packet 9600bps 145.850 Primary 435.175
　　145.900
　　CALLSIGN: HL01
　　KO-25 Packet 9600bps 145.870 436.500
　　CALLSIGN: HL02
　　IO-26 Packet 1200bps 145.875, 145.900, 437.822 Primary
　　145.950 437.867
　　CALLSIGN: ITMSAT
　　Note: Uplink is FM and Downlink is SSB (BPSK).
　　AO-27 Packet 9600bps 145.850 436.800
　　[J] FM Voice
　　NOTE: Part time repeater.
　　PO-28 Packet 9600bps 145.975 Primary 435.050 Primary
　　145.925 435.075
　　GPS Receiver
　　CALLSIGN: POSAT1
　　FO-29 JA (SSB,CW) 145.900-146.000 435.800-435.900
　　JD 1200bps 145.850, 145.870, 435.910
　　145.890, 145.910
　　Beacon (cw) 435.795
　　Digitalker 435.910
　　CALLSIGN:8J1JCS
　　MO-30
　　Ground team unable to communicate with bird. Early SK.
　　TO-31 9600bps (FSK) 145.925 436.925
　　BBS Callsign = TMSAT1-12
　　Broadcast Callsign = TMSAT1-11
　　GO-32 3@2meters 435.225 Primary
　　3@1270meters 435.325
　　NOTE: Still undergoing tests.
　　PO-33 9842bps 436.500 436.500
　　Simplex
　　Direct Sequence
　　Spread Spectrum
　　NOTE: Still undergoing tests.
　　SO-34 (SEDSAT-1)
　　Mode L 1268.175-1268.250 437.850-438.000
　　FSK, 9600bps
　　Mode A 145.915-145.975 29.350-29.420

　　Note: Still undergoing tests. May be early SK.

 

根据我们的试验,以下几颗卫星比较适合中国HAM的试验.

1. RS-12

上行频道:

   145.910 to 145.950 MHz CW/SSB

   21.210 to 21.250 MHz CW/SSB

下行频道:

   29.410 to 29.450 MHz CW/SSB

   145.910 to 145.950 MHz CW/SSB

信标频率:29.408 MHz

自动联络: Uplink 21.129 MHz Downlink 29.454 MHz

现在这颗卫星处在KT模式(21MHz上行,29MHz,145MHz下行)

只需要比较小的上行功率和非定向性天线就可以了.成功率几乎100%

2.AO-27

上行频率:145.850 MHz FM

下行频率:436.792 MHz FM

这是一颗FM方式的卫星,根据试验它的转发器灵敏度和下行信号

的质量都是不错的,但是最好使用定向天线(2-4单元的八木天线就可以卫星跟踪用的软件可以在 ftp://ftp.amsat.org找到,比较好的是 winorbit,轨道参数可以在nasa或者http://www.amsat.org找到最新的参数.