traps

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Search Results for "traps"

45 links - and 1 categories

Antennas
  • DL9MEU Antenna projects - Basics for a good Antenna:``Only if you can hear it, you can work it!``Symmetric antennas save a lot of trouble.``No traps - no radials - no loading coils.
    [ Hits: 5165 | Votes: 57 | Rating: 5.80 ]
Antennas : 17M
  • KK5BL How To Build A G5RV Antenna - How to build a G5RV Transmitting antenna Originally posted to the packet bbs system by KC6CFF. The G5RV is an easy-to-build 80-10 dipole requiring no traps. All bands are covered, including 30, 17, and 12. The G5RV has high SWR, by design, on most bands and a tuner is required
    [ Hits: 23289 | Votes: 7 | Rating: 6.15 ]
Antennas : 40M
  • Dipole for 40 meters - Shortened dipole with traps for 40 meters band in portuguese
    [ Hits: 3808 | Votes: 4 | Rating: 5.50 ]
Antennas : Dipole
  • Wire antenna with coaxial cable traps - This multiband antenna 10-80 meters is a home made project by I1BAY. Has been used for SOTA activations with great results. Traps are done with coax cable turns, dimensions are in the attached schema.
    [ Hits: 8087 | Votes: 1 | Rating: 1.00 ]
  • An Improved Multiband Trap Dipole Antenna - This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps by W8NX
    [ Hits: 7376 | Votes: 5 | Rating: 6.00 ]
Antennas : Homebrewing Techniques
  • To Trap or Not to Trap - An interesting article on traps, pros and cons of trapping by W4RNL
    [ Hits: 3662 | Votes: 2 | Rating: 5.50 ]
  • Easy tuning an building of traps  updated - A new and simple method for tuning traps. You need 2-3Watt of your TRX and two homemade coupling coils by DK7ZB
    [ Hits: 5541 | Votes: 103 | Rating: 8.06 ]
Antennas : Theory Antennas : Traps
  • How antenna traps work - An interesting article about homebrewing antenna traps for multiband antennas by VE3GK
    [ Hits: 9159 | Votes: 26 | Rating: 6.34 ]
  • Coaxial Traps for multiband antennas - A new perspective on the analysis and design of this popular antenna element. By Karl-Otto Müller, DG1MFT
    [ Hits: 12108 | Votes: 6 | Rating: 5.50 ]
  • Building Coaxial Traps - This page describes the design and construction materials W8WWV used to build a coaxial cable trap. A coaxial cable trap is a parallel resonant circuit that is usually inserted in an antenna element to enable multiband operation.
    [ Hits: 8878 | Votes: 5 | Rating: 8.20 ]
  • Multi Band Antenna Traps - These devices are called Traps, but they are actually more like frequency sensitive switches. They are parallel resonant, high Q, tuned circuits which provide a very high impedance at their frequency of resonance.
    [ Hits: 4437 | Votes: 3 | Rating: 6.00 ]
  • Trapped antennas - ARRL index of document about trapped antennas and notes on traps usage
    [ Hits: 2698 | Votes: 1 | Rating: 1.00 ]
  • 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: 6015 | Votes: 22 | Rating: 6.27 ]
  • Coax Traps from a Modeling Perspective - About Coax Traps, NC4FB examine the operation of coax traps through modeling.
    [ Hits: 242 | Votes: 0 | Rating: 0.00 ]
  • PA3HMP Antenna Traps - An original way to build antenna traps
    [ Hits: 4260 | Votes: 6 | Rating: 8.67 ]
Antennas : Vertical Antennas : W3DZZ Manufacturers : Antennas : HF Manufacturers : Baluns
  • Unadilla Antennas - The Big Signal, W2AU, W2DU, W2VS, traps InLine, Intenna, An-sulator, End-sulator, Old Reliable by Unadilla Antenna Manufacturing Co.
    [ Hits: 3171 | Votes: 136 | Rating: 8.12 ]
Radio Equipment : HF Vertical Antenna : Cushcraft R7
  • R7 Vertical Maintenance and Repair - How repair the traps, and then homebrew the rest of the antenna, including the matching box
    [ Hits: 3847 | Votes: 7 | Rating: 5.57 ]
  • Troubleshooting Traps - This article refers mainly to the old Cushcraft 1/4 wavelength AV series of antennas (12AVQ, 14AVQ etc) hence the references to radials. The R series (R5, R7 etc) are 1/2 wavelength antennas, and the radials are NOT 1/4 wavelength resonant.
    [ Hits: 2282 | Votes: 0 | Rating: 0.00 ]
Shopping and Services : Test equipment
  • Bertech - Distributor of ESD, kapton tapes, high temperature tapes, esd wrist straps, ionizers, ground cords, grounding devices, ESD gloves, esd finger cots, esd workstations, esd rubber bands, esd binders, esd bags, anti static glove, esd rubber bands, no clean solder paste, water soluble solder paste, finger cots, esd mats
    [ Hits: 562 | Votes: 0 | Rating: 0.00 ]
Software : Antenna analysis
  • HamCalc v1.3  updated - 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: 18452 | Votes: 71 | Rating: 4.56 ]
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