cross field

cross field

Antennas : 2M

• Budget-Friendly 5-Element Quad Antenna Design - Constructing a 5-element quad antenna, the author aimed for low cost and simplicity, resulting in an effective design with 11 dBi gain and SWR of 2:1 or better across the 2-meter band. Using wood and dowels, the antenna costs under $8 and takes less than two hours to build with basic tools. The model predicts excellent performance, confirmed by ARRL Lab measurements. Practical field results demonstrate improved communication, even in simplex mode.
  [ Hits: 118 | Votes: 1 | Rating: 7 ]

• Crossfire Phasing - Phased antennas elements use radiated fields from multiple elements to produce nulls.
  [ Hits: 1189 | Votes: 3 | Rating: 9.33 ]

• CF and EH antennas - Crossed-Field Antennas and E/H Antennas
  [ Hits: 3049 | Votes: 1 | Rating: 1 ]

• Crossed Field Antenna - The Crossed Field Antenna (CFA) is one of the applications of Correction of Maxwell's Equations which was used over 150 years ago which was proved these days that the Magnetic Field Source is only the Displacement Current not the Conduction Current . These Corrections was made by an Egyptian Doctor Engineer Fathi Kabbary , who reached the New Correct Theory which shows that the height and efficiency of the antenna doesn't depend on the wavelength
  [ Hits: 2308 | Votes: 5 | Rating: 2.8 ]
• The mark 2 Crossfield Antenna - The mark 2 Crossfield Antenna was described in Sprat 76 by Alec, GD3HQR
  [ Hits: 719 | Votes: 0 | Rating: 0 ]

• Amateur Radio Emergency Service - "ARES trains and organizes Hams to provide emergency communications to ""Served Agencies"" such as FEMA, National Weather Service, Red Cross, Salvation Army, Hospitals, and others. This site describes ARES goals and methods and structure."
  [ Hits: 5949 | Votes: 6 | Rating: 8.83 ]

• Prevention and Suppression of RF Interference to Audio Systems - In this study, the author builds upon Muncy's research, demonstrating that radio-frequency current on cable shields affects audio systems through the "pin 1 problem" and shield-current-induced noise (SCIN). An enhanced equivalent circuit for ferrite chokes is proposed, addressing dimensional resonance and inductor self-resonance. Field tests confirm that chokes reduce interference across 500 kHz to 1,000 MHz. Guidelines for diagnosing and mitigating EMI from various sources are provided for product development and field installations.
  [ Hits: 47 | Votes: 0 | Rating: 0 ]