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295 links - and 1 categories

Antennas : 160M
  • 22 Antennas for the 160 Meter Band - 22 Different Wire Antennas for the 160 Meter Band, Random Length Radiator Wire, delta loop, loop antennas, off-centered antennas, sloper, dipoles, Z antenna, Zepp and Clothesline Antennas
    [ Hits: 764 | Votes: 1 | Rating: 1 ]
Antennas : 80M
  • Phased Delta Loops - An interesting article with many technical details on a phased delta loop array for 80 meters band includes pictures of antenna relays
    [ Hits: 1995 | Votes: 4 | Rating: 10 ]
Antennas : Antenna Calculators
  • Christman Phasing Calculator - Calculate vertical array pahse antenna accorting to the Christman technique
    [ Hits: 622 | Votes: 1 | Rating: 3 ]
Antennas : CobWeb
  • Building a CobWebb Antenna - Homebrew a cobwebb antenna for the HF bands. This page describe a cobwebb multiband antenna resonating on 14 18 21 24 and 28 MHz. The cobweb antenna model can be considered a fan dipole, or better, multiple dipoles fed in parallel.
    [ Hits: 1488 | Votes: 5 | Rating: 7.6 ]
Antennas : Fan Dipole
  • The KL3JM modified SRI Fan Dipole for 80-40-20 Meters - The antenna in this project is a modification of the techniques used to design a multiband fan type dipole with little or no tuning involved having a total space of 105 feet
    [ Hits: 500 | Votes: 1 | Rating: 5 ]
Antennas : Four Square
  • 4 Square vertical system - This page is a short description of the four phased verticals system for 160m 80m and 40m
    [ Hits: 542 | Votes: 0 | Rating: 0 ]
Antennas : Homebrewing Techniques
  • How to straighten Microbore copper tube - Article and video showing a technique to straighten Microbore copper pipe that is useful in antenna construction. This technique has been implemented to build a Quadrifiliar Helix antenna.
    [ Hits: 325 | Votes: 0 | Rating: 0 ]
Antennas : NVIS
  • DIY NVIS Antenna Using a Mag Mount - NVIS antennas, also known as Near Incident Vertical Skywave antennas have a high angle of radiation. Something on the order of 60 degrees, to straight up to 90 degrees. A portable, easy to setup and cheap nvis antenna project.
    [ Hits: 643 | Votes: 4 | Rating: 5 ]
Antennas : Portable
  • Antennas for portable operations - Article describing various type of portable antennas, from verticals, to dipoles, vertical dipoles, random wire with tuners, and end-fed antennas
    [ Hits: 500 | Votes: 0 | Rating: 0 ]
Antennas : Traps
  • Tuning Antenna Traps - Tuning Antenna Traps without a Grid Dip Oscillator, using a bit of initiative and some standard equipment a ham should have in the shack.
    [ Hits: 911 | Votes: 1 | Rating: 9 ]
Antennas : Wire
  • The K2AV FCP Single Wire Folded CounterPoise - Efficient Low Band Counterpoise for Restricted Circumstances Loss Avoidance Opportunities and Techniques for the Low Bands The short and linear FCP was designed to reduce ground losses from inadequate radial systems beneath inverted L and other vertical antennas.
    [ Hits: 283 | Votes: 0 | Rating: 0 ]
  • HF Wire Antennas for Field Day - Dipole antennas, vertical half-wave dipole antennas with impedence tranformes that can be used for portable operations. Some well worn antenna configurations are the easiest and loudest lash-ups you can try.
    [ Hits: 219 | Votes: 0 | Rating: 0 ]
Ham Radio : Blogs : Europe
  • LB3HC's hightech blog - LB3HC's hightech blog - Amateur radio, RF design, electronics, uC, software, Arduino, AVR, Antennas
    [ Hits: 185 | Votes: 0 | Rating: 0 ]
Manufacturers : Accessories
  • Hofi - Hofi Hochfrequenztechnik, RF switches, antenna tower and antenna manufacturer, owner of the versatower and fritzel brand names based in Germany
    [ Hits: 350 | Votes: 2 | Rating: 6.5 ]
Manufacturers : Antenna Switches
  • NMF Technology - Amateur radio antenna accesories manufacturer, produces four square antenna combiner, antenna controllers, antenna stack match and antenna switches
    [ Hits: 153 | Votes: 2 | Rating: 10 ]
Operating Modes : Mobile : RV & Camping
  • Ham Radio Antenna Installation on a Van - The RoadTrek design presents some unique challenges to us hams. Here an example of a VHF and HF antenna installation on a VAN
    [ Hits: 1070 | Votes: 2 | Rating: 5.5 ]
Radio Equipment : Antenna Analyzers Technical Reference : Receiver Front-End Protector
  • Yet Another Front End Saver - The KD9SV Front End Saver in a new fashion. If you use a separate receive antenna, you need a Front End Saver to eliminate the possibility of blowing out your receiver's front end while using an auxiliary receive antenna.
    [ Hits: 268 | Votes: 0 | Rating: 0 ]
Technical Reference : Repeater
  • Cross Band Repeaters - Crossband Repeating is a process where a Ham transmits one signal on one band (typically UHF), and it is received by another radio with a better antenna/power installation, and re-transmitted (typically on VHF) to another radio system, or a repeater. Everyday examples of cross-band repeaters are repeater receive sites that hear the input signals on 2m and retransmit those signals on a frequency higher than 220 MHz.
    [ Hits: 206 | Votes: 0 | Rating: 0 ]
Technical Reference : Vector Network Analyzer
  • Analyzing 6 handheld antennas with a VNA - In this article the author analyze six different type of VHF handheld antennas and as result of his self training on his new vector network analyzer published this interesting report
    [ Hits: 408 | Votes: 1 | Rating: 1 ]

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