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The Storm Chaser SSTV Experiment
Problem: No data service available when in rural areas when chasing
Thesis: Amateur Radio Digital Modes can bridge the gap when cellular data services are
unavailable.
Goal: Evaluate digital modes in critical moments to obtain nexrad images, maps, soundings,
and model information. This evaluation will include receiving on a variety of low cost shortwave
receivers, amateur radio HF radios, and relaying on the 144 MHz band.
Note: This experiment will not generate scientifi c data, rather will report on the practical nature
of using amateur radio digital technology in the fi eld and make recommendations on the
permanent establishment of nets.
Use cases/Aims
1.
General Class or higher amateur radio operator joins HF net and asks for a specifi c radar
image.
2.
Technician Class radio operator calls a fi eld station on the 144 MHZ band requesting an
image. The fi eld station relays the request to the HF net, the originator then receives the
image on their own radio. This is acceptable under Part 97 as long as the relay station
receives the requested image. It also is acceptable third party traffi c.
3.
Technician Class radio operator calls a fi eld station on 144 MHz. The fi eld station relays the
request to the HF net. The image is received and retransmitted on 144 MHz.
Evaluation Criteria:
1.
Speed of obtaining images
2.
Visual quality of images
3.
Evaluation of digital mode
4.
Net control/relay criteria including the diffi culty to obtaining relevant information
5.
Chaser’s diffi culty of obtaining images over the air
6.
Atmospheric diffi culties in an HF environment (static crashes)
7.
Propagation issues
8.
Ability of low cost receivers to receive sstv images
9.
Support from amateur radio community
