periodic

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periodic

44 links - and 2 categories

Antennas : 80M
  • EWE rx antenna for 80 meters - The antenna is an aperiodic inverted U which is operated against ground.. ewe antenna for 80 meters by PA0RCT
    [ Hits: 1210 | Votes: 0 | Rating: 0.00 ]
Antennas : Antenna Calculators
  • Log Periodic Antenna Calculator  updated - Online calculator for Logarithmic Periodic Dipole Antenna LPDA
    [ Hits: 5898 | Votes: 186 | Rating: 6.47 ]
  • Log-Periodic Dipole Array Calculator - This LPDA calculator is based on the design procedure as described by L. B. Cebik, W4RNL (SK) in the 21st edition of The ARRL Antenna Handbook.
    [ Hits: 136 | Votes: 0 | Rating: 0.00 ]
Antennas : Baluns
  • Baluns on Log Periodic Antennas - Some antenna manufacturers place baluns at the incorrect location in LPDA arrays, or tell you to route the cable incorrectly. This can cause substantial RFI and all sorts of weird problems like RF into house wiring.
    [ Hits: 2239 | Votes: 4 | Rating: 3.50 ]
Antennas : Log Periodic
  • Log Periodic Dipole Antennas: TITANEX DLPD-15 - Review of the DLPD 15 is a log periodical dipole antenna with 15 elements made with state-of-the-art technology.
    [ Hits: 4061 | Votes: 0 | Rating: 0.00 ]
  • Log Periodic of Another Sort - A log periodic dipole array (LPDA) antenna design that offer continuous low SWR in 13-30MHz range
    [ Hits: 4501 | Votes: 1 | Rating: 10.00 ]
  • Designing Log Periodic Antennas - By Dr. Glen Dash, Ampyx LLC
    [ Hits: 4818 | Votes: 4 | Rating: 7.75 ]
  • A Pyramidal Antenna for 14-30 MHz - This article is about a type of log periodic antenna that surprisingly little has been written about
    [ Hits: 4419 | Votes: 6 | Rating: 6.00 ]
  • Designing Log Periodic Antennas - Lightweight and precise, the log periodic has become a favorite among EMC engineers By Glen Dash, Ampyx LLC
    [ Hits: 3532 | Votes: 7 | Rating: 6.71 ]
  • HF Log Periodic antenna - 10 to 20 meters band log-periodic antenna project with SWR Plots, boom lenght and element spacing.
    [ Hits: 3460 | Votes: 4 | Rating: 7.25 ]
  • VHF UHF Log Periodic Antenna - A detailed drawing of a VHF UHF Log periodic antenna by VA2PHI
    [ Hits: 8832 | Votes: 24 | Rating: 6.08 ]
  • About Log Periodic Antennas - Overview, summary, tutorial about the log periodic antenna or aerial used for wideband RF antenna applications
    [ Hits: 2566 | Votes: 0 | Rating: 0.00 ]
Antennas : Theory Manufacturers : Antennas : VHF UHF Microwave
  • Degen Design - Multi band mini quad antennas, log periodic and stacked antenna for 144 MHz and 70cm
    [ Hits: 909 | Votes: 1 | Rating: 6.00 ]
  • Elk Antennas - Elk Antennas to give the Ham log periodic antennas with the best gain, directivity, and front to back ratio possible for the size and price.
    [ Hits: 352 | Votes: 1 | Rating: 8.00 ]
Manufacturers : Towers and Accessories
  • DK9SQ Antennen - Walter Spieth Antennen offer, Duoband-Portable-Log. Periodic 2m/70cm, Vertical-Loop-Antenna,10-40 Meter and PortableW3DZZ-Antenna as well as fiberglass tubes
    [ Hits: 2250 | Votes: 1 | Rating: 2.00 ]
Propagation : Resources
  • The PropNET Project - PropNET is an ad-hoc 2-way (and potentially, "more-way") RF-based digital communication network whose activity is reported on the Internet. As participating stations periodically ID and exchange data, they report their activity to an Internet data-collection hub for presentation through this web site.
    [ Hits: 249 | Votes: 0 | Rating: 0.00 ]
Radio Equipment : HF YAGI Antennas : Cushcraft X7
  • X7 Cushcraft at E73m - Cushcraft X7 antenna design is based on Log periodic-Yagi and has real advantage over conventional multiband trapped tribanders.
    [ Hits: 416 | Votes: 0 | Rating: 0.00 ]
Software : Databases
  • QST Browser - A Mac OS X application for searching and viewing the back issues of periodicals that are published by the ARRL in CD-ROM format.
    [ Hits: 404 | Votes: 1 | Rating: 10.00 ]
Technical Reference : Batteries : Battery Charger
  • Rechargeable Battery Cycler - an autonomous device that will periodically discharge A recharge Nickel Cadmium (Ni-Cd) or Nickel-Metal-Hydride (Ni-MH) battery packs so that they are always fresh and ready to deliver by VE2ZAZ
    [ Hits: 211 | Votes: 0 | Rating: 0.00 ]
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