Differences
This shows you the differences between two versions of the page.
| Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision |
| blog:2020-10-08:ve7til_hears_mars_reconnaissance_orbiter [2020/10/08 07:38] – va7fi | blog:2020-10-08:ve7til_hears_mars_reconnaissance_orbiter [2020/10/08 08:09] – va7fi |
|---|
| ====== VE7TIL Hears Mars Reconnaissance Orbiter ====== | ====== VE7TIL Hears Mars Reconnaissance Orbiter ====== |
| From [[http://www.arrl.org/news/british-columbia-radio-amateur-hears-mars-reconnaissance-orbiter |ARRL]]: | From [[http://www.arrl.org/news/british-columbia-radio-amateur-hears-mars-reconnaissance-orbiter |ARRL]]: |
| | |
| | {{dish_strip.jpg?400|}} |
| |
| <WRAP indent> | <WRAP indent> |
| <<According to a Spaceweather.com report, Scott Tilley, VE7TIL, in [Roberts Creek] British Columbia, Canada, received a signal from the NASA Mars Reconnaissance Orbiter (MRO), flying just 274 kilometers (about 170 miles) above the red planet’s surface. The signal was an X-band carrier containing no data or telemetry. | <<Scott Tilley, VE7TIL, in [Roberts Creek] British Columbia, Canada, received a signal from the NASA Mars Reconnaissance Orbiter (MRO), flying just 274 kilometers (about 170 miles) above the red planet’s surface. The signal was an X-band carrier containing no data or telemetry. |
| |
| “Its purpose is to allow for Doppler tracking,” Tilley explained. “The rapid change in pitch of the signal is caused by the relative motion of the satellite and the observer.” He used a homemade satellite dish to hear the orbiter. | “Its purpose is to allow for Doppler tracking,” Tilley explained. “The rapid change in pitch of the signal is caused by the relative motion of the satellite and the observer.” He used a homemade satellite dish to hear the orbiter. |
