rf ground46 links
Antennas : 30M
- Shortened 30m Dipole
- This article describes the construction of a 9,50 m long dipole for the 30 m band (10.1 MHz to 10.15 MHz). It was designed to be mounted ca. 6 m above ground inside an attic. The calculations were performed by OE1MEW
[ Hits: 95 | Votes: 1 | Rating: 1 ]
- K0UO Rhombix Antenna Farm The Ground
- Modeling an antenna over real terrain gives you a visual picture of how terrain impacts performance. You can use a model to determine optimum height for antennas on an existing tower, Compare different tower locations for performance, Compare different sites for performance
[ Hits: 137 | Votes: 1 | Rating: 10 ]
- Variations on a Dipole
- Antenna patterns are all about interference. Presentation on wire antennas for HF bands. Dipoles, horizontal and vertical dipoles, effects of ground on radiation patterns, multi-band wires antennas. Knowing what you should expect from the radiation patterns for waves on your wires will help you choose what will work best for your needs. The principles of interference can lend insight into what to expect from a wire antenna.
[ Hits: 61 | Votes: 0 | Rating: 0 ]
- RF Exposure Calculator
- To use the RF Exposure Calculator, fill-in the form with your operating power, antenna gain, and the operating frequency. Depending on how far above ground the RF source is located, you might want to consider ground reflections too.
[ Hits: 91 | Votes: 0 | Rating: 0 ]
- Stop RFI from Solar PV Systems
- Stop EMI RFI Interference in Off Grid Solar PV Systems, in this article the author provides hints on tracking down the EMI or RFI source, shielding and grounding in order to eliminate interferences on the whole HF and VHF ham radio bands
[ Hits: 76 | Votes: 0 | Rating: 0 ]
- Digital Mode Interface
- The use of an isolation interface between the radio and the pc is higly recommended,in order to avoid the problems that could be caused from ground loops.
This project includes schematic and assembly instructions
[ Hits: 158 | Votes: 0 | Rating: 0 ]
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