Dan Stowell<p>Technical details in English, of the <a href="https://mastodon.social/tags/LRAD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>LRAD</span></a> / <a href="https://mastodon.social/tags/VortexCannon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VortexCannon</span></a> that may have been used at the demonstration in <a href="https://mastodon.social/tags/Belgrade" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Belgrade</span></a>: <a href="https://bmanalysis.substack.com/p/long-range-acoustic-device-lrda-i" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">bmanalysis.substack.com/p/long</span><span class="invisible">-range-acoustic-device-lrda-i</span></a></p>