3 ms·
Good stuff, HAAT(height above average terrain) always makes a big difference. I regularly see APRS packets of 120mi+, although probably at a lot more power. Th
by vvanders 9y ago
Good stuff, HAAT(height above average terrain) always makes a big difference.
I regularly see APRS packets of 120mi+, although probably at a lot more power. The current record seems to be near ~2,000 mile[1] bounced from the ISS.
[1] - http://qrznow.com/new-iss-packet-distance-record-claimed/ http://qrznow.com/new-iss-packet-distance-record-claimed/
- deleted 9y ago[deleted]
- X-Istence 9y agoUsing ARPS when I helped launch a weather balloon while in college, we were recorded by a station in Las Vegas. We launched south of Phoenix so at least 300 miles. We were transmitting at 3 watt using a small Yaesu hand-held connected to a micro-controller.
- gravypod 9y agoYou can also go very long distances if you use forward-error-correcting protocols like JT9 or WSPR. WSPRNet[0] is a network of WSPR transceivers that use milliwatts to communicate across the world. It's just.... very slow. Edit: And this is very frequency dependent. [0] - http://wsprnet.org/drupal/ http://wsprnet.org/drupal/
- vvanders 9y agoYeah, I've been wanting to try JT9 but haven't picked up a HF radio yet. Some of the moon bounce stuff is just incredible.
- egeekuk 9y agoMight just be me, but I read this as ~2 kilometers, rather than the intended ~2,000 miles.
- agumonkey 9y agoCould this be replicated on an imaginary pure flat land ?