| The Guderian designed HF radio nets provided a level of command and control never before achieved on the battlefield. |
| Consequently, HF patients of the study had normal or overweight BMI ratios which confirming to exclude the cachectic HF patients from the study. |
| Before 2008, Lassa virus was the only arenavirus known to cause HF in Africa. |
| Common HF antennas like vertical monopoles, horizontal wire dipoles, and loop antennas all provide omni-directional communications when configured properly. |
| The HF signal also jumps gaskets between pipe sections, bad telephone cable bonds, and small breaks in a cable's sheath. |
| In the time it took to pick up the chart and locate our position, our HF antenna iced up. |
