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68 links about point to point on dxzone.com

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Antennas : 20M
  • W5GI Mystery Antenna  pop - W5GI Mystery Antenna is a multi-band wire antenna that performs exceptionally well even though it confounds antenna modeling software. This antenna covers 80 to 6 meters with low feed point impedance and will work with most radios, with or without an antenna tuner. It is approximately 100 feet long, can handle the legal limit, and is easy and inexpensive to build. It is similar to a G5RV but a much better performer especially on 20 meters.
    [ Hits: 113811 | Votes: 85 | Rating: 6.40 ]
Antennas : Antenna Calculators
  • Antenna wire catenary calculator - This is a simple calculator for solving the antenna wire catenary between to end points given the design wind speed, mass per unit length of the wire, wire diameter and Gross Breaking Strength of the wire.
    [ Hits: 2530 | Votes: 6 | Rating: 3.17 ]
Antennas : Baluns
  • HF Home made Balun  pop - A balun is a device that is used at the feedpoint of a balanced antenna when an unbalanced feedline is desired to feed the antenna. Balun is a contraction for BALanced to UNbalanced.
    [ Hits: 37011 | Votes: 23 | Rating: 6.10 ]
Antennas : Homebrewing Techniques
  • Antenna Impedance measurement - When experimenting on an antenna it's often important to determine its feedpoint impedance at various frequencies across the operating band. It's easy enough to measure SWR, but sometimes we need to know more detail than this
    [ Hits: 1093 | Votes: 6 | Rating: 2.67 ]
Antennas : Multiband
  • Some plain facts about multiband vertical antennas - There is considerable confusion as to what exactly a multiband vertical antenna is. The confusion concerns the method of feed, how much mismatch one can expect, how many radials are required, how the particular antenna is built for multiband use, plus some other points.
    [ Hits: 1688 | Votes: 1 | Rating: 7.00 ]
Antennas : Theory
  • Another way to look at vertical antennas - What iss the difference between a dipole and a vertical? Maybe not as much as you think. Come along and try another point of view.
    [ Hits: 3451 | Votes: 0 | Rating: 0.00 ]
  • Sensitivity of Multi Turn Receiving Loops - Magnetism is manifested as a 'field of vectors', that is, any point in the magnetic field has not only a magnitude, but a direction in space. The four Maxwell equations describe how electric and magnetic vector fields behave and interact.
    [ Hits: 216 | Votes: 0 | Rating: 0.00 ]
Antennas : VHF UHF
  • DK7ZB 144 mhz Yagis - High gain, good pattern and acceptable bandwidth. These aims can be realized with a radiation-resistance of 25-35Ohms, because the 28-Ohm-feedpoint is very simple to match.
    [ Hits: 1616 | Votes: 7 | Rating: 6.86 ]
Antennas : WiFi
  • 802.11b Homebrew WiFi Antenna Shootout  pop - Guide to homebrew your wifi antenna, using a tin can, in this cases using a pringles can. This antennas are also known as cantenna and let you spread your wifi signal.
    [ Hits: 69598 | Votes: 53 | Rating: 6.68 ]
  • How to build a tin can waveguide antenna  pop - Looking for an inexpensive way to increase the range of your wireless network? A tin can waveguide antenna, or Cantenna, may be just the ticket. This design can be built for under $5 U.S. and reuses a food, juice, or other tin can.
    [ Hits: 36288 | Votes: 41 | Rating: 7.28 ]
Contesting
  • Getting started in contest - A PowerPoint presentation by Bruce Draper, AA5B on how to get started in contesting
    [ Hits: 480 | Votes: 0 | Rating: 0.00 ]
Contesting : QSO Party
  • Colorado QSO Party - After some years of absence the Colorado QSO Party (COQP) is going to happen again. Mark you calendar, tune up your rig and point your antenna toward the Central Rocky Mountains and get ready for a fun time.
    [ Hits: 262 | Votes: 1 | Rating: 10.00 ]
DX Resources : Ham Radio Awards
  • W9DC IOTA Awards - W9DC North America Amateur Radio checkpoint for IOTA Islands on the Air and WLH World Lighthouse award applications and award instructions; Island and lighthouse award links for international radio operator activities
    [ Hits: 702 | Votes: 3 | Rating: 6.33 ]
DX Resources : IOTA DX Resources : Shack Rental
  • PJ9JT Contesting QTH - SignalPoint, Caribbean Contesting Consortium. Curacao. CCC's contesting QTH is the former home of PJ9JT, John Thompson, W1BIH. This historic site has been the home of many contest wins since 1971.
    [ Hits: 1012 | Votes: 1 | Rating: 7.00 ]
Ham Radio : Clubs : North America : Canada : British Columbia
  • The Nechako Radio Club - The Nechako Radio Club was formed in the summer of '93 to provide a common meeting point for the local area amateur radio operators.
    [ Hits: 121 | Votes: 0 | Rating: 0.00 ]
Internet and Radio : Police Scanners
  • ScannerBuddy.com  pop - Directory of emergency scanners pinpointed by location on a map of the US with direct feeds
    [ Hits: 35772 | Votes: 54 | Rating: 5.29 ]
Manufacturers : Accessories
  • Peet Bros Company - Manufacturer of advanced electronic systems to measure such weather data as: wind speed, wind direction, wind chill, pressure, humidity, rainfall, and dew point.
    [ Hits: 403 | Votes: 2 | Rating: 10.00 ]
Manufacturers : Antennas : VHF UHF Microwave : Satellite antennas
  • Austin Antenna - Austin Antenna employs leading-edge antenna technology in the production of the highest performance antennas currently available. Marine Antenna, Multi-band Mobile, Point-to-Point, Base Station, Wide-band Land Based, LPDA, Linear Omni, Triplexer, Scanner Antennas
    [ Hits: 3535 | Votes: 6 | Rating: 9.67 ]
Software : Antenna analysis
  • SmartSmith - A smarter version of the Smith Chart program. It allows you to dynamically generate impedance point plots as you configure each design element of an impedance matching network. Has an extensive Help file with a Wizard that tells you what steps to take in designing a matching network for a given load impedance. Complete Windows installation kit by w9dmk
    [ Hits: 1772 | Votes: 7 | Rating: 1.43 ]
  • 3 EL Quad Designer - This DOS program will figure the wire sizes for a 3 element quad and will also give you the distance from the center of the boom to drill your holes for mounting the wire on the spider. it also gives you the length of the 4 quarter wave lengths of wire in case you would like to figure the spreader drill points yourself.
    [ Hits: 1029 | Votes: 2 | Rating: 2.00 ]
Software : DSP
  • NBEMS - The Narrow Band Emergency Messaging System (NBEMS) for Windows is a suite of software programs designed for point-to-point, fast, error-free, emergency messaging up to or over 100 miles distant, and takes up a very minimum of frequency space on the ham bands, leaving more space for other ham activites.
    [ Hits: 917 | Votes: 1 | Rating: 10.00 ]
Software : Satellite tracking
  • Satellite Finder - Satellite Finder is a way to accurately point satellite dishes at communications satellites in geostationary orbit.
    [ Hits: 2961 | Votes: 9 | Rating: 6.01 ]
Software : Weak Signal
  • HamView - A freeware program to dig out weak signals buried in noise, functionally similar to the excellent FFTDSP of AF9Y, but with the added bonus of real time audio filtering of the incoming signals. Just point and click with the mouse, and the selected signal will stand out from the QRM and noise.
    [ Hits: 6120 | Votes: 3 | Rating: 5.00 ]
Technical Reference : Vacuum tube
  • Vacuum tube Basics - Here's a tale of early '70s vacuum tubes, mainly from the viewpoint of amateur radio.
    [ Hits: 666 | Votes: 1 | Rating: 10.00 ]
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