The design he’s going for is a transmission line, in effect a folded half-wave resonant tube terminated at one end and open at the other, with the speaker close to half way along.

The purpose of these events is to address questions and assess community concerns regarding a proposed large-scale transmission line that is planned for construction across an eight-county area […] ...

Grain Belt Express, an 800-mile transmission line project, awarded contracts totaling nearly $1.7 billion to Quanta Service and Kiewit Energy Group. The project, spanning Kansas, Missouri ...

MPRP is a 500,000-volt transmission line that utility officials said is needed to meet increased electricity needs due, in part, to data centers. The 70-mile-long transmission line will run ...