rf ground

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rf ground

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Antennas : 40M : 40 meter Delta Loop Antennas
  • Delta Loop DX Antenna for 40 meters band - A monoband delta loop antenna for the 7 MHz. This vertically polarized DX Antenna is a full wavelength sngle side antenna and has a total length of 42.3 meters (137,1 inch) Can be easily setup with a flag pole or fishing pole as center top mast. For optimal performance lower side should be at 2 meter above the ground. This antenna offers a low radiation angle and 1 DB Gain.
    [ Hits: 408 | Votes: 3 | Rating: 6.33 ]
Antennas : 40M : 40 meter Vertical Antennas
  • A very efficient half size 40 meter Vertical Antenna - A vertical antenna project for the 7MHz made with some spare parts. Based on a broken 20 foot fishing pole, it is based on a good ground system made with radials and a capacitive hat done to increase the global radiation resistance of the antenna. A custom loading coil is also included in this project to perfectly tune the antenna to the CW portion of the 40 meters band.
    [ Hits: 712 | Votes: 4 | Rating: 8.5 ]
Antennas : Baluns
  • Build your own HF balun - A balun is a MUST for dipoles or similar antennas when they are feed with coaxial cable. From the RF point of view, the shield can be modeled as two conductors, the internal shield (the real shield, this is, ground) and the external shield, who is really far to be ground. In this way, your dipole has 3 arms, the two from the dipole and the coaxial cable shield (external face)
    [ Hits: 246 | Votes: 1 | Rating: 10 ]
Antennas : Theory
  • Errante's capacitive RF Grounding - This system demonstrates that no galvanic coupling to earth is needed for a proper RF earth grounding
    [ Hits: 489 | Votes: 1 | Rating: 10 ]
  • Groundplane Antennas at Various Heights - Mounting on roof at the right ground level can greately impact on antenna performances because will affect the radiated angle of energy.
    [ Hits: 173 | Votes: 3 | Rating: 6 ]
Antennas : Vertical Manufacturers : Software Defined Radio
  • SDR4Space - Software Defined Radio for Space Applications produces ground stations for uplink and downlink, Rotator computer controller with USB and CANbus Interface, USB Converters
    [ Hits: 134 | Votes: 0 | Rating: 0 ]
Operating Modes : Mobile
  • Grounds RF and DC - Asepects of grounds in mobile oeprations setups
    [ Hits: 535 | Votes: 1 | Rating: 1 ]
Technical Reference : Electronics
  • A Tutorial on the Decibel - This tutorial provides background information on the decibel and instructions for performing calculations involving decibels. This tutorial combines information from several authors, including Bob DeVarney, W1ICW; Walter Bahnzaf, WB1ANE; and Ward Silver, NOAX
    [ Hits: 295 | Votes: 1 | Rating: 7 ]
Technical Reference : Grounding
  • Ground Systems - Basic ground system functions, lightning and safety ground, RF return-path ground and induced ground currents
    [ Hits: 1091 | Votes: 1 | Rating: 9 ]
  • House ground layouts - Hams or amateur radio operators and CB operators usually cannot have ideal grounds, but with some care and planning they can have nearly perfect systems
    [ Hits: 603 | Votes: 0 | Rating: 0 ]
  • Grounding and Reducing Noise - Reducing noise and RF in your radio station by grounding your equipment in the proper way. PDF article by Xtal Staff.
    [ Hits: 1279 | Votes: 1 | Rating: 10 ]
  • Second floor grounding - Solution for stations located at secondo floor or higher. Lead lengths to the grounding system are much too long to provide a low-impedance RF ground.
    [ Hits: 279 | Votes: 1 | Rating: 10 ]
  • Grounding HF Transceiver using Coax Cable - Improper grounding or earthing system can cause several unwanted RF interferences (RFI) to television sets, broadcast receivers, hi-fi sets and telephone sets. In this Article the author explain how to setup a proper radio shack grounding using coaxial cable and ceramic disc capacitor
    [ Hits: 1177 | Votes: 4 | Rating: 7.75 ]
  • How to Ground an Antenna: aerial earthing - The antenna ground or earth system can be key to its operation whilst also being a key safety feature. This article is about grounding systems for antennas, covering different aspects of grounds made for antenna safety, or expressly for lightning or just to improve antenna performance, being ground an antenna component.
    [ Hits: 213 | Votes: 1 | Rating: 4 ]
  • Practical Amateur Radio Grounding - The single point ground in the most important aspect of a good grounding system. The concept behind a single point ground is very simple, keep everything at the same ground potential. Electrical Groundl, Lightning Ground, RF Grounds
    [ Hits: 287 | Votes: 0 | Rating: 0 ]
Technical Reference : QRM Eliminator
  • Noise Canceller Project - This project was intended to accompany the stealth antenna project. Author want to see how effective a noise canceller could be in reducing the background noise floor when attic / stealth antennas are being used.
    [ Hits: 688 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Frequency Interference
  • RF in the Ham Shack - Ham Station Desk Radio Equipment Ground
    [ Hits: 639 | Votes: 0 | Rating: 0 ]
  • Locating Power Line Noise - RF interference from power lines is caused by arcing as high voltage electricity bridges a gap to a lower ground potential on the power pole. Corroded or loose connections, cracked insulators almost all of the hardware on a power pole can be the source of arcing.
    [ Hits: 412 | Votes: 0 | Rating: 0 ]

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