hf traps
11 links
- 160-80-40 Metre Trapped V-Dipole
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- A Trapped dipole inverted V antenna for lower HF Bands. Construction details are for temporary installation. Permanent installations will require additional ruggedising and waterproofing however the basic electronics concepts remain the same. This project includes SWR plots for the three bands and pictures details of the homemade traps.
[ Hits: 108 | Votes: 0 | Rating: 0 ]
- Tuning HF antenna Traps
- Tuning HF Coaxial Antenna Traps
[ Hits: 491 | Votes: 0 | Rating: 0 ]
- Space-Efficient Excellence: Inverted L Multi-Band HF Antenna
- Discovering a solution for limited space, the inverted L HF antenna emerges as a stellar performer. Half the size of a dipole, it ensures optimal installation in restricted areas, maintaining superb transmission (TX) and reception (RX) characteristics. Spectrum Communications' multi-band version, featuring traps, proves even more space-friendly without compromising performance. A fiberglass pole offers sturdy support, while proper grounding, an RF choke, and occasional tuning contribute to a high-performing and reliable antenna system.
[ Hits: 115 | Votes: 0 | Rating: 0 ]
- VE6YP CoaxTrap
- The Coax trap program computes design parameters for the construction of coaxial traps for HF usage. Typically these are constructed from PVC tube and RG58/59 coax
[ Hits: 7440 | Votes: 26 | Rating: 6.54 ]
- Coax Traps from a Modeling Perspective
- About Coax Traps, NC4FB examine the operation of coax traps through modeling.
[ Hits: 672 | Votes: 1 | Rating: 5 ]
- Tuning HF Coaxial Antenna Traps
- The problem with making your own trapped HF antennas is usually getting the coaxial traps tuned to frequency.
[ Hits: 1958 | Votes: 2 | Rating: 4 ]
- Low loss Wire Traps
- Tips to homebrew your own HF traps using aluminium wire and doorknob capacitor
[ Hits: 1283 | Votes: 1 | Rating: 9 ]
- Tuning Antenna Traps
- The problem with making your own trapped HF antennas is usually getting the coaxial traps tuned to frequency. This article explains a method using a RF signal generator at +10dBm output into the coaxial trap.
[ Hits: 273 | Votes: 2 | Rating: 6.5 ]
- RF Trap Resonant Frequency
- RF traps for a lightweight 40/30/20/17/15m inverted V dipole antenna for SOTA purposes and how you can use a modern antenna analyser to find the resonant frequency of a HF trap.
[ Hits: 198 | Votes: 0 | Rating: 0 ]
- 9 band vertical HF antenna by RW3XA
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- Simple vertical radiator with matching box. No traps, no tuner required for this multiband antenna
[ Hits: 38729 | Votes: 43 | Rating: 7.34 ]
- HamCalc v1.3
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- HamCalc is a free collection of calculators for radio amateurs include Antenna ERP calculations,
Attenuators, Audio Filter design, Coil Winding,
Decibels, Great Circles map and calculator, HF Filters, HF Traps, Metric conversions OP Amps
QRA Locator to Latitude/Longitude, Radio Horizon calculator, Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations Download zip By G4VWL
[ Hits: 28796 | Votes: 114 | Rating: 5.57 ]
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