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- Lecher_lines abstract "In electronics, a Lecher line or Lecher wires is a pair of parallel wires or rods that were used to measure the wavelength of radio waves, mainly at UHF and microwave frequencies. They form a short length of balanced transmission line. When attached to a source of radio frequency power such as a radio transmitter, the radio waves form standing waves along their length. By sliding a conductive bar that bridges the two wires along their length, the length of the waves can be physically measured. Austrian physicist Ernst Lecher, improving on techniques used by Oliver Lodge and Heinrich Hertz, developed this method of measuring wavelength around 1888. Lecher lines were used as frequency measuring devices until frequency counters became available after World War 2. They were also used as components, often called "resonant stubs", in UHF and microwave radio equipment such as transmitters, radar sets, and television sets, serving as tank circuits, filters, and impedance matching devices. They are used at frequencies between HF/VHF where lumped components are used, and UHF/SHF where resonant cavities are more practical.".
- Lecher_lines thumbnail Early_Lecher_line.png?width=300.
- Lecher_lines wikiPageExternalLink 5N10_50.GIF.
- Lecher_lines wikiPageExternalLink 002.
- Lecher_lines wikiPageExternalLink El-82.html.
- Lecher_lines wikiPageExternalLink V18N05_145.pdf.
- Lecher_lines wikiPageExternalLink V18N05_163.pdf.
- Lecher_lines wikiPageID "3541696".
- Lecher_lines wikiPageRevisionID "601519883".
- Lecher_lines hasPhotoCollection Lecher_lines.
- Lecher_lines subject Category:Distributed_element_circuits.
- Lecher_lines subject Category:Radio_electronics.
- Lecher_lines type Artifact100021939.
- Lecher_lines type Circuit103033362.
- Lecher_lines type Device103183080.
- Lecher_lines type DistributedElementCircuits.
- Lecher_lines type ElectricalDevice103269401.
- Lecher_lines type Instrumentality103575240.
- Lecher_lines type Object100002684.
- Lecher_lines type PhysicalEntity100001930.
- Lecher_lines type Whole100003553.
- Lecher_lines comment "In electronics, a Lecher line or Lecher wires is a pair of parallel wires or rods that were used to measure the wavelength of radio waves, mainly at UHF and microwave frequencies. They form a short length of balanced transmission line. When attached to a source of radio frequency power such as a radio transmitter, the radio waves form standing waves along their length.".
- Lecher_lines label "Lecher lines".
- Lecher_lines sameAs m.09kfk0.
- Lecher_lines sameAs Q17098776.
- Lecher_lines sameAs Q17098776.
- Lecher_lines sameAs Lecher_lines.
- Lecher_lines wasDerivedFrom Lecher_lines?oldid=601519883.
- Lecher_lines depiction Early_Lecher_line.png.
- Lecher_lines isPrimaryTopicOf Lecher_lines.