tuning screw

tuning screw

[′tün·iŋ ‚skrü]
(electromagnetism)
A screw that is inserted into the top or bottom wall of a waveguide and adjusted as to depth of penetration inside for tuning or impedance-matching purposes.
References in periodicals archive ?
JA: "It is 18 inches deep with a 15inch diameter drum 'skin' which is held in place by six tuning screws.
These connectors have a multi-step mating section that is precisely machined to provide low VSWR over a broad bandwidth without the need for tuning screws.