Amateur Radio Stations heard via ISS


This page documents Amateur Radio data digipeated by the International Space Station. In order to appear on this page, a position report in a valid APRS format must be digipeated through ISS, then be heard by an internet gateway station, which then forwards it on to the APRS Internet System. All APRSIS data is archived on this machine. Packets that came through the ISS are recalled for this display. For more info on the technology involved, see the links at the bottom of the page.

The system will also show those stations that have been heard via ISS but have not sent a position report in the table at the end of the page.

If you are able to transmit through the ISS digi and wish to send a packet that will make your position appear on these maps and those of APRS users of ARISS, see:
http://www.aprs.org/iss-faq.html

The biggest weakness in the system right now is the lack of Internet Gateways, or IGates. Almost all APRS programs have the ability to function as IGates, consult the documentation of your program of choice for details...the more the better!

The current position of ISS, as well as the 5 and 10 minute future positions are also shown on the map.

Regrettabbly, because of the huge cost increase recently implemented by Google for its mapping service, google maps are no longer available.

Station List Click here to see times in absolute UTC

Call MessageslatlonAge (dd:hh:mm:ss)
RS0ISS
*
 0.0055 0.16667 00:01:04:38
BU2DR-2
*
 24.954 121.4535 00:01:54:14
BG4UVR-6
*
 31.889 121.11517 00:01:55:01
E27ASY-3
*
 14.75433 100.733 00:02:04:38
YC4OX-10
*
 -3.4625 102.52817 00:02:04:40
LW2DYB-1
*
 -38.26917 -57.87167 00:02:43:41
LU2WBA-10
*
 -45.93933 -67.56817 00:02:43:43
WA0D-5
*
 32.946 -97.15167 00:03:04:34
KB9VIC-9
*
 38.735 -88.08333 00:03:04:53
N6RVI-6
*
 32.72417 -117.03833 00:03:06:35
K7MT-6
*
 46.64083 -111.955 00:03:06:37
SUNSET
*
 37.76 -122.4975 00:03:09:32
DV8CER-9
*
 8.57567 123.3345 00:03:33:59
DU6DKL
*
 10.745 122.97167 00:03:36:59
DX6RAN-3
*
 10.72872 122.97933 00:03:37:20
YE3ETF
*
 -6.9075 112.0575 00:03:42:39
YD1BIS-7
*
 -6.88333 107.66667 00:03:43:41
HS6KLJ-5
*
 13.54583 100.18833 00:03:43:46
9Z4DZ-1
*
 10.14583 -61.54167 00:04:30:42
KQ4CDU-7
*
 33.82617 -83.8215 00:04:36:19
K0KOC-7
*
 39.3865 -77.41517 00:04:36:47
W4TBD-6
*
 37.43667 -77.7035 00:04:37:01
N8JR
*
.. 00:04:37:11
W9QO
*
 34.136 -83.75867 00:04:37:32
WA4SXM-6
*
 35.93433 -84.045 00:04:38:52
AA8KY
*
 38.7595 -82.97533 00:04:39:05
KA8YES-6
*
 40.36683 -80.53867 00:04:39:39
K1WY
*
 41.76233 -72.72567 00:04:40:50
AC8CL
*
 40.794 -81.47517 00:06:15:10
K4KDR-6
*
 37.79433 -77.61117 00:06:16:00
KK0TT-3
*
 46.91967 -96.77717 00:06:16:15
KB9ZJN-7
*
 44.3665 -89.7625 00:06:16:20
N0KBA
*
 38.62133 -90.18417 00:06:20:50
VE7FED-12
*
 48.57367 -123.47517 00:06:21:09
VE7SZB-7
*
 49.10667 -121.91967 00:06:24:19
VK5ATN-6 . -34.14182 138.42198 00:06:55:43
VK5NTF-4 . -34.14182 138.42198 00:06:58:38
VK3KAW-10
*
 -36.35933 147.12167 00:06:59:02
VK6CO-2 . -31.9 115.94033 00:07:03:56
VP9NR-8
*
 32.30117 -64.76383 00:07:48:03
N1NCB-1
*
 43.91683 -69.90567 00:07:49:17
VE3PMK
*
.. 00:07:52:23
WA8EBM
*
.. 00:07:53:43
KD8BIL
*
 39.6025 -84.12167 00:07:53:51
KG8CW
*
.. 00:07:54:31
KF0BMD-11
*
 39.72 -104.901 00:07:56:17
KF0G-10
*
 38.45167 -121.73867 00:08:01:12
KG7WOC
*
 47.8835 -122.57517 00:08:01:18
VE7HJ
*
 48.648 -123.394 00:08:01:30
KM6LYW
*
 38.90334 -120.935 00:08:04:03
EA1CIU-1
*
 42.42283 -8.63733 00:09:16:00
CT1EBQ
*
 38.71267 -9.423 00:09:18:32
W0JW-6
*
 41.21056 -93.83722 00:09:25:28
NY2DS-7
*
 43.22183 -78.02133 00:09:25:28
AA9DR-7
*
 42.8645 -87.907 00:09:25:28
N3WLB
*
.. 00:09:28:37
W0RFP-7
*
 47.43667 -94.915 00:09:32:22
KC9YTT
*
 40.9255 -90.021 00:09:33:06
KF0BMD-9
*
 39.71883 -104.901 00:09:35:24
KB0VBZ
*
 38.72333 -104.04667 00:09:36:27
KW7IBE-1
*
 45.91833 -122.73783 00:09:36:50
KF0BMD-6
*
 39.70833 -104.91167 00:09:37:42
VK3KAW-4 . -36.35933 147.12166 00:10:12:32
IK3ZGB-2
*
 45.7125 11.7 00:10:51:51
IZ1POV
*
 44.40633 8.95867 00:10:52:15
EA1JN-10
*
 42.73683 -8.35367 00:10:53:30
PD5RT
*
 52.1265 6.20883 00:10:54:28
EA1RX
*
 42.14 -8.817 00:10:54:58
EA1JAO-6
*
 43.7095 -7.8785 00:10:55:37
EB1IVY-8
*
 43.3175 -8.3535 00:10:56:08
VE3KKN
*
.. 00:11:05:20
KB1EJH
*
 38.829 -75.325 00:11:06:07
AC2KU-1
*
 39.41217 -74.50283 00:11:07:47
KC8ZUM-7
*
 38.9825 -84.5255 00:11:08:23
NU8I-7
*
 41.86667 -80.76667 00:11:08:36
KE4AZZ-6
*
 27.03433 -82.1655 00:11:09:08
KE4AZZ
*
 27.0345 -82.16533 00:11:09:35
W0VFK-4
*
 42.00367 -91.67267 00:11:10:24
KB3ILM
*
 39.51383 -87.1875 00:11:10:31
KF0GVX-7
*
 41.03933 -95.97933 00:11:10:49
Click on a callsign to see a detailed map.

Recent activity

00:01:04:38 : RS0ISS]0P0PS3,APRSAT,qAR,LW2DYB-6:'v&l SI]ARISS-International Space Station=
00:01:28:40 : RS0ISS]0P0PS3,APRSAT,qAR,N6DAN-1:'v&l SI]ARISS-International Space Station=
00:01:54:14 : BU2DR-2]CQ,RS0ISS*,WIDE2-2,qAR,BG4UVR-6:/095628h2457.24N/12127.21Ev090/000/A=000241/Ti=22/Te=22/V=4997 CQ ARISS Hello ISS TU 73.
00:01:55:01 : BG4UVR-6]BEACON,RS0ISS*,APRSAT,qAO,BI4NHT-8:!3153.34N/12106.91E`https://gitee.com/bg4uvr/autobiu
00:01:55:42 : RS0ISS]0P0PS4,APRSAT,qAR,BG4UVR-6:'v&l SI]ARISS-International Space Station=
00:01:57:39 : BU2DR-2]CQ,RS0ISS*,WIDE2-2,qAR,BU2DR-3:/095301h2457.24N/12127.21Ev090/000/A=000292/Ti=22/Te=22/V=4997 CQ ARISS Hello ISS TU 73.
00:01:58:27 : BU2DR-2]CQ,RS0ISS*,WIDE2-2,qAR,BU2DR-3:/095215h2457.24N/12127.21Ev090/000/A=000301/Ti=22/Te=22/V=4997 CQ ARISS Hello ISS TU 73.
00:01:58:42 : RS0ISS]0P0PS4,APRSAT,qAR,BU2DR-3:'v&l SI]ARISS-International Space Station=
00:02:01:42 : RS0ISS]0P0PS4,APRSAT,qAR,E25OOO:'v&l SI]ARISS-International Space Station=:dev 9.8KHz
00:02:01:42 : RS0ISS]0P0PS4,APRSAT,qAR,E20QQQ:'v&l SI]ARISS-International Space Station=
00:02:04:38 : E27ASY-3]AESPG4,RS0ISS*,ARISS,qAR,HS8JNF-1::Heard :YC4OX-10 UR RPRT 599 via RS0ISS
00:02:04:40 : YC4OX-10]APDW16,RS0ISS*,YBSAT,SGATE,WIDE2-1,qAR,E27ASY-1:!0327.75S/10231.69E-YC4OX Rejang Lebong
00:02:43:41 : LW2DYB-1]BEACON,RS0ISS*,qAR,LW2DYB-6::BLNQSL1/1:LU2WBA-10,LW2DYB-6,BRAZIL-1,A55BTN
00:02:43:43 : LU2WBA-10]BEACON,RS0ISS*,AISAT,qAR,LW2DYB-6:!4556.36S/06734.09Wy - rada.Tilly@gmail.com
00:02:43:45 : RS0ISS]0P0PS4,APRSAT,qAR,LW2DYB-6:'v&l SI]ARISS-International Space Station=
00:02:58:46 : RS0ISS]0P0PS3,APRSAT,qAR,HP2BWJ-10:'v&l SI]ARISS-International Space Station=
00:03:04:34 : WA0D-5]CQ,RS0ISS*,qAR,N6DAN-1:mon on
00:03:04:35 : WA0D-5]CQ,RS0ISS*,qAR,N6DAN-1:!3256.76NI09709.10W# UR 59 hr North Texas... 73 de WA0D
00:03:04:40 : WA0D-5]CQ,RS0ISS*,qAR,N6DAN-1:!3256.76NI09709.10W#
00:03:04:42 : WA0D-5]CQ,RS0ISS*,qAO,W0ARP-14:!3256.76NI09709.10W# CQ de WA0D
00:03:04:47 : RS0ISS]0P0PS4,APRSAT,qAO,W0ARP-14:'v&l SI]ARISS-International Space Station=
00:03:04:53 : KB9VIC-9]DI4TLZ,RS0ISS*,WIDE2-1,qAR,N6DAN-1:`t]l -/`KB9VIC EM58 Southern IL_%
00:03:06:03 : KB9VIC-9]DI4TLZ,RS0ISS*,WIDE2-1,qAR,N6DAN-1:`t]l -/`KB9VIC EM58 Southern IL_%
00:03:06:24 : WA0D-5]CQ,RS0ISS*,qAR,N6DAN-1:mon on
00:03:06:25 : WA0D-5]CQ,RS0ISS*,qAR,N6DAN-1:!3256.76NI09709.10W# UR 59 hr North Texas... 73 de WA0D
00:03:06:30 : WA0D-5]CQ,RS0ISS*,qAO,W0ARP-14:!3256.76NI09709.10W#
00:03:06:32 : WA0D-5]CQ,RS0ISS*,qAR,N6DAN-1:!3256.76NI09709.10W# CQ de WA0D
00:03:06:35 : N6RVI-6]APRS,RS0ISS*,qAR,N6DAN-1:ARISS Ground Monitoring Station DM12lr
00:03:06:37 : K7MT-6]CQ,RS0ISS*,qAR,N6DAN-1:=4638.45N/11157.30W`SGATE HELENA, MT DN46 {UISS54}
00:03:07:13 : KB9VIC-9]DI4TLZ,RS0ISS*,WIDE2-1,qAR,N6DAN-1:`t]l -/`KB9VIC EM58 Southern IL_%
00:03:07:25 : N6RVI-6]APRS,RS0ISS*,qAR,N6DAN-1:=3243.45N/11702.30W`N6RVI-6 Spring Valley, CA DM12lr {UISS54}
00:03:07:45 : N6RVI-6]APRS,RS0ISS*,qAR,N6DAN-1:ARISS Ground Monitoring Station DM12lr
00:03:07:47 : RS0ISS]0P0PS4,APRSAT,qAR,N6DAN-1:'v&l SI]ARISS-International Space Station=
00:03:08:15 : N6RVI-6]APRS,RS0ISS*,qAO,W0ARP-14:=3243.45N/11702.30W`N6RVI-6 Spring Valley, CA DM12lr {UISS54}
00:03:08:35 : N6RVI-6]APRS,RS0ISS*,qAO,W0ARP-14:ARISS Ground Monitoring Station DM12lr
00:03:08:37 : K7MT-6]CQ,RS0ISS*,qAR,N6DAN-1:=4638.45N/11157.30W`SGATE HELENA, MT DN46 {UISS54}
00:03:09:10 : N6RVI-6]APRS,RS0ISS*,qAR,N6DAN-1:=3243.45N/11702.30W`N6RVI-6 Spring Valley, CA DM12lr {UISS54}
00:03:09:30 : N6RVI-6]APRS,RS0ISS*,qAR,N6DAN-1:ARISS Ground Monitoring Station DM12lr
00:03:09:32 : SUNSET]APRX29,RS0ISS*,qAO,W0ARP-14:!3745.60N/12229.85W`W2GMD.org SF, CA, USA SatGate CM87ss
00:03:10:30 : K7MT-6]CQ,RS0ISS*,qAO,W0ARP-14:=4638.45N/11157.30W`SGATE HELENA, MT DN46 {UISS54}
00:03:10:45 : N6RVI-6]APRS,RS0ISS*,qAO,W0ARP-14:=3243.45N/11702.30W`N6RVI-6 Spring Valley, CA DM12lr {UISS54}
00:03:10:47 : RS0ISS]0P0PS4,APRSAT,qAO,W0ARP-14:'v&l SI]ARISS-International Space Station=
00:03:31:49 : RS0ISS]0P0PS4,APRSAT,qAS,JJ1WTK-6:'v&l SI]ARISS-International Space Station=
00:03:33:59 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAR,BG4UVR-6:=0834.54N/12320.07Ek012/014/145.900MHz/A=000276 mobile Dipolog
00:03:34:06 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAR,BG4UVR-6:=0834.52N/12320.06Ek022/009/145.900MHz/A=000280 mobile Dipolog
00:03:34:29 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAR,BU2DR-3:=0834.37N/12320.02Ek016/024/145.900MHz/A=000271 mobile Dipolog
00:03:34:49 : RS0ISS]0P0PS4,APRSAT,qAR,BG4UVR-6:'v&l SI]ARISS-International Space Station=
00:03:35:02 : BG4UVR-6]BEACON,RS0ISS*,APRSAT,qAR,BG4UVR-6:!3153.34N/12106.91E`https://gitee.com/bg4uvr/autobiu
00:03:35:08 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAR,BG4UVR-6:=0834.19N/12319.97Ek027/008/145.900MHz/A=000264 mobile Dipolog
00:03:36:30 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAR,BU2DR-3:=0834.33N/12320.01Ek197/022/145.900MHz/A=000283 mobile Dipolog
00:03:36:41 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAO,YD7VME-1:=0834.39N/12320.03Ek196/019/145.900MHz/A=000284 mobile Dipolog
00:03:36:43 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAO,YD7VME-1:=0834.40N/12320.03Ek197/018/145.900MHz/A=000288 mobile Dipolog
00:03:36:49 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAR,DU6DKL-1:=0834.43N/12320.04Ek199/017/145.900MHz/A=000288 mobile Dipolog
00:03:36:51 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAR,BU2DR-3:=0834.44N/12320.04Ek188/018/145.900MHz/A=000280 mobile Dipolog
00:03:36:59 : DU6DKL]CQ,RS0ISS*,qAR,BU2DR-3::DV8CER-9 :[AA] qsl, tnx im qrl{33
00:03:37:02 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAR,DU6DKL-1::DU6DKL :GA ur 599 dipolog{33
00:03:37:13 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAR,BU2DR-3:=0834.51N/12320.06Ek192/001/145.900MHz/A=000293 mobile Dipolog
00:03:37:18 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAO,YD7VME-1::DU6DKL :GA ur 599 dipolog{31
00:03:37:20 : DX6RAN-3]APWW11,RS0ISS*,APRSAT,SGATE,qAO,YD7VME-1:@081255h/I'LVmUPer sT CQ DX6RAN hello all 73!
00:03:37:25 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAO,YD7VME-1::DU6DKL :Ga 599{30
00:03:37:36 : DU6DKL]CQ,RS0ISS*,qAO,YD7VME-1:cqcq de DU6DKL Negros Phippines PK10lr
00:03:38:58 : DU6DKL]CQ,RS0ISS*,qAO,YD7VME-1:=1044.70N/12258.30Er DX6RAN CLUB STATION SGATE/DIGIPEATER 145.825MHz
00:03:39:08 : DU6DKL]CQ,RS0ISS*,qAR,E27ASY-1::DV8CER-9 :GA Peter
00:03:39:24 : DU6DKL]CQ,RS0ISS*,qAO,YD7VME-1::DV8CER-9 :599 VIA ISS
00:03:39:36 : DU6DKL]CQ,RS0ISS*,qAO,YD7VME-1::AMSAT-SEA:hello AMSAT-SEA from Negros de Kako
00:03:39:38 : DV8CER-9]APDR16,RS0ISS*,ARISS,WIDE2-2,qAR,DU6DKL-1:=0834.58N/12320.08Ek194/013/145.900MHz/A=000264 mobile Dipolog
00:03:40:07 : DU6DKL]CQ,RS0ISS*,qAR,DU6DKL-1:cqcq de DU6DKL Negros Phippines PK10lr
00:03:40:15 : DU6DKL]CQ,RS0ISS*,qAO,YC2YIZ-1:=1044.70N/12258.30Er DX6RAN CLUB STATION SGATE/DIGIPEATER 145.825MHz
00:03:40:20 : DX6RAN-3]APWW11,RS0ISS*,APRSAT,SGATE,qAO,YD7VME-1:@080955h/I'LVmUPer sT CQ DX6RAN hello all 73!
00:03:40:33 : DU6DKL]CQ,RS0ISS*,qAO,YC2YIZ-1::AMSAT-SEA:hello AMSAT-SEA from Negros de Kako
00:03:40:38 : DU6DKL]CQ,RS0ISS*,qAO,YC1SCC-10:t 4 Beacon File
00:03:40:40 : DU6DKL]CQ,RS0ISS*,qAR,DU6DKL-1:UISS Test 1 Beacon File
00:03:40:46 : DX6RAN-3]APWW11,RS0ISS*,APRSAT,SGATE,qAR,DU6DKL-1:]200809z Mobile with APRS/IGate for AMSAT and Terrestial Communication with voice on 145.825mhz
00:03:40:49 : RS0ISS]0P0PS4,APRSAT,qAO,YD1BIS:'v&l SI]ARISS-International Space Station=
00:03:41:14 : DU6DKL]CQ,RS0ISS*,qAO,YD1BIS:=1044.70N/12258.30Er DX6RAN CLUB STATION SGATE/DIGIPEATER 145.825MHz
00:03:41:51 : DU6DKL]CQ,RS0ISS*,qAO,YD1BIS:cqcq de DU6DKL Negros Phippines PK10lr
00:03:41:58 : DU6DKL]CQ,RS0ISS*,qAO,YD1BIS::APRSPH :NET Via ISS 2nd pass checking in from Negros 73 de Kako
00:03:42:39 : YE3ETF]CQ,RS0ISS*,qAR,YB1JQC-1:=0654.45S/11203.45EyTUBAN EAST JAVA INDONESIA...OI63AC
00:03:43:39 : YE3ETF]CQ,RS0ISS*,qAO,YC2YIZ-1:Tuban East Java....de YE3ETF
00:03:43:41 : YD1BIS-7]APDW17,RS0ISS*,qAR,YB1JQC-1:]GA from OI33/cd https://bit.ly/yd1bis
00:03:43:46 : HS6KLJ-5]APRSAI,RS0ISS*,ARISS,qAR,YB1JQC-1:]OZ4HZ+Spender TM-481DTV
00:03:43:50 : RS0ISS]0P0PS4,APRSAT,qAO,YD1BIS:'v&l SI]ARISS-International Space Station=
00:03:43:52 : HS6KLJ-5]APRSAI,RS0ISS*,ARISS,qAR,HS9DMC-15:!1332.75N/10011.30E`tipakornkamol@Gmail.com:dev 9.8KHz
00:03:43:52 : HS6KLJ-5]APRSAI,RS0ISS*,ARISS,qAO,YD1BIS:!1332.75N/10011.30E`tipakornkamol@Gmail.com
00:04:30:42 : 9Z4DZ-1]CQ,RS0ISS*,qAR,9Z4DZ-6:=/IB;R]vR;- B 73 de 9Z4DZ
00:04:30:59 : 9Z4DZ-1]CQ,RS0ISS*,qAR,HK4D-6:Grace and Peace to All de 9Z4DZ
00:04:31:14 : 9Z4DZ-1]CQ,RS0ISS*,qAR,HK4D-6::RS0ISS :Greetings from Siparia, Trinidad. FK90fd, de 9Z4DZ
00:04:31:29 : 9Z4DZ-1]CQ,RS0ISS*,qAR,HK4D-6:=/IB;R]vR;- B 73 de 9Z4DZ
00:04:31:44 : 9Z4DZ-1]CQ,RS0ISS*,qAR,HK4D-6:Grace and Peace to All de 9Z4DZ
00:04:31:53 : RS0ISS]0P0PS3,APRSAT,qAR,HK4D-6:'v&l SI]ARISS-International Space Station=
00:04:31:59 : 9Z4DZ-1]CQ,RS0ISS*,qAR,HK4D-6::RS0ISS :Greetings from Siparia, Trinidad. FK90fd, de 9Z4DZ
00:04:32:15 : 9Z4DZ-1]CQ,RS0ISS*,qAR,HK4D-6:=/IB;R]vR;- B 73 de 9Z4DZ
00:04:32:30 : 9Z4DZ-1]CQ,RS0ISS*,qAR,HK4D-6:Grace and Peace to All de 9Z4DZ
00:04:33:31 : 9Z4DZ-1]CQ,RS0ISS*,qAR,HK4D-6::RS0ISS :Greetings from Siparia, Trinidad. FK90fd, de 9Z4DZ
00:04:36:19 : KQ4CDU-7]S3TY5W,RS0ISS*,WIDE2-1,qAO,W4TBD-10:`oM9l"/-Y`"7)}GEORGIA WIRES-X ROOM 43732 VIA ARISS CHK IN ANY TIME WC4FM-7_1
00:04:36:47 : K0KOC-7]3Y2S1Y,RS0ISS*,qAO,W4TBD-10:'i4wl #/]=
00:04:37:01 : W4TBD-6]CQ,RS0ISS*,qAO,W4TBD-10::Heard :WA0D-5,N8JR,KQ4CDU-7,K0KOC-7
00:04:37:03 : KB9VIC-9]DI4TLZ,RS0ISS*,WIDE2-1,qAO,W4TBD-10:`t]l -/`KB9VIC EM58 Southern IL_%
00:04:37:11 : N8JR]CQ,RS0ISS*,qAO,W4TBD-10:Good morning everyone.
00:04:37:20 : KQ4CDU-7]S3TY5W,RS0ISS*,WIDE2-1,qAO,W4TBD-10:`oM9l"/-Y`"7(}GEORGIA WIRES-X ROOM 43732 VIA ARISS CHK IN ANY TIME WC4FM-7_1

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About the site author, K4HG
Amateur Radio on the ISS

Email Steve at k4hg@tapr.org

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