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The DDRR-Directional Discontinuity Ring Radiator - N5DUX
https://www.n5dux.com/ham/files/pdf/DDRR%20-%20Directional%20Discontinuity%20Ring%20Radiator.pdf
WebPhoto A. The DDRR (Directional Discontinuity Ring Radiator) is a vertically polarized antenna. (All photos and artwork by the author) Photo B. A commercial 2-meter vertically …
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DDRR Antenna for 40 Meters Ham Band Lesson for CB
https://alphaxray.info/welcome/2016/ddrr-antenna-for-40-meters-ham-band-lesson-for-cb.html
WebJan 18, 2016 · A 40-10 Meter DDRR Antenna – a Lesson for Hams and CBers – Vertical & Horizontal Polarity. ‘DDRR’ means “Directional …
DA: 67 PA: 83 MOZ Rank: 77
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What Are the Pros and Cons of DDRR Antennas? - TurboFuture
https://turbofuture.com/industrial/What-Are-the-Pros-and-Cons-of-DDRR-Antennas
What Is A DDRR Antenna?The Advantages of DDRR AntennasThe Disadvantages of DDRR AntennasObservations About DDRR AntennasDDRR stands for Directional Discontinuity Ring Radiator. The DDRR antenna was invented by Dr. J. M. Boyer. It is a short, vertical monopole antenna connected to a transmission line. The “monopole” antenna is bent into a nearly 360-degree ring. This is why they’ve long been known as hula hoop antennas, though the DDRR antenna is very different from ...See more on turbofuture.comEstimated Reading Time: 4 mins DDRR stands for Directional Discontinuity Ring Radiator. The DDRR antenna was invented by Dr. J. M. Boyer. It is a short, vertical monopole antenna connected to a transmission line. The “monopole” antenna is bent into a nearly 360-degree ring. This is why they’ve long been known as hula hoop antennas, though the DDRR antenna is very different from ...
DDRR stands for Directional Discontinuity Ring Radiator. The DDRR antenna was invented by Dr. J. M. Boyer. It is a short, vertical monopole antenna connected to a transmission line. The “monopole” antenna is bent into a nearly 360-degree ring. This is why they’ve long been known as hula hoop antennas, though the DDRR antenna is very different from ...
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Build a CB 11 metre 27 Mhz No Capacitor DDRR …
https://alphaxray.info/cb-antennas/2016/build-cb-11-metre-27mhz-ddrr-quarter-wave-vertical-performance-low-noise.html
WebJul 13, 2016 · The DDRR is just an old piece of copper cable 20cm dia. bent in a wobbly circle. This is the perfect STEALTH and Flat Iron Roof … Reviews: 1
Reviews: 1
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DDRR Antenna - YouTube
https://www.youtube.com/watch?v=vmMWEJ8simg
WebMar 3, 2017 · Google on "DDRR" in any search box. You'll get links to diverse technical articles about this cool thing. Have you ever built and used a DDRR antenna? How di...
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ANTENNAS - qsl.net
https://www.qsl.net/l/lu5fjl/Info%20varia/ANTENAS/Antena%20DDRR.PDF
WebBy Kent Britain, WA5VJB. Photo A. The DDRR (Directional Discontinuity Ring Radiator) is a vertically polarized antenna. (All photos and artwork by the author) Photo B. A …
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40 meter band antennas projects - The DXZone
https://www.dxzone.com/catalog/Antennas/40M/
WebA 40 meters DDRR Antenna - A direct drive ring radiator antenna for the 40 meters band by W6WYQ QST article. [ Hits: 3399 | Votes: 8 | Rating: 3.37 ] A comparison of 40 meter beam antennas - This page describes a …
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DUAL DDRR C0-Phased Citizens Band HF Antenna …
https://cqdx11.com/cb-radio-antennas/dual-ddrr-c0-phased-cb-antenna-array/
WebDDRR is an acronym for D irectional D iscontinuity R ing R adiator, an OMNIDIRECTIONAL, VERTICALLY Polarised Radio Ariel for Transmission and Reception of HF signals.
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Real-World Amateur Radio: DDRR Antenna - A …
https://mw1cfnradio.blogspot.com/2013/07/ddrr-antenna-forgotten-legend.html
WebJul 28, 2013 · DDRR Antenna - A Forgotten Legend. Back in the days when military spending was simply a matter of writing cheques, the floor of an US desert was covered with welded copper plate, and strange ring …
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An On-Body UHF RFID Tag With DDRR Antenna for Healthcare …
https://ieeexplore.ieee.org/document/9927360
WebAbstract: This paper describes the development of a Direct Driven Resonant Radiator (DDRR) antenna for an ultra-low power UHF RFID tag system, integrating an …
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