field

field

Pages: [prev] 1 2 3 4 5 6 7 8 9 10 11 12 13 [next]

• Field Antenna for 40m - The antenna was designed for installation in a field conditions or limited space. Antenna may be installed at a low- height mast. Antenna does not required guys and takes small room for installation.
  [ Hits: 1834 | Votes: 3 | Rating: 5.33 ]

• A Simple 40 Meter Vertical for Field Day - A dipole antenna for 7 MHz support for this antenna is fiberglass military mast
  [ Hits: 994 | Votes: 1 | Rating: 5 ]

• Weather Resistant Field Antenna for 50 MHz - Photo construction manual of a portable antenna made with two heavy duty whips by buddipole. In this article has been implemented a 50 MHz portable dipole.
  [ Hits: 812 | Votes: 1 | Rating: 10 ]

• A Cheap Portable Mast Support - A homemade simple and inexpensive portable antenna support, handy for quick trips to the field and other portable operations
  [ Hits: 232 | Votes: 0 | Rating: 0 ]

• Portable Field Antenna Kit - A simple kit for temporary, lightweight, wire tactical antenna systems is essential for any field Ops. Described in this article a kit as it fits in a standard US Military M-1956 Butt Pack
  [ Hits: 542 | Votes: 1 | Rating: 10 ]

• Field Day Vertical Antenna by KN5L - This Field Day Vertical Antenna project is the result of many years of attending various field day sites and realizing that what was needed is a simple, easy to assemble vertical antenna. The design of this Field Day Antenna is not very novel and leverages ideas from Butternut verticals and ARRL publications. The one essential requirement was that the antenna can be raised by just one person. The design of this Field Day Antenna is an above ground mounted ground plane vertical.
  [ Hits: 214 | Votes: 3 | Rating: 7 ]

• 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: 220 | Votes: 0 | Rating: 0 ]

• SP QRO Association - The purpose of our association is m.in. Conducting technical activities in the field of professional sports and the initiation, support and assistance of educational, technical and sports projects for the benefit of citizens of the Republic of Poland.
  [ Hits: 116 | Votes: 1 | Rating: 10 ]

• Amateur Radio Emergency Data Network - AREDN provides the Amateur Radio Community with a quality solution for supporting the needs of high speed data in the Amateur Radio and Emergency Communications field.
  [ Hits: 275 | Votes: 1 | Rating: 10 ]

• Small Panel Kits - High performance, IPX7 waterproof small solar panels and battery packs to power radios, sensors, and other portable devices. Solar panels are UV and scratch resistant for long-term use in the field.
  [ Hits: 331 | Votes: 0 | Rating: 0 ]

• 9A5N Solid State CW Paddles - 21st Century telegraphy paddles, software defined telegraphy paddles by 9A5N. Following global trends in the application of the latest technology, HAM 9a5n has made a significant technological breakthrough in the field of CW paddles
  [ Hits: 475 | Votes: 1 | Rating: 10 ]

• UltraPortable Amateur Digital Communications - A group for sharing, learning or presenting practical ideas and field experience for Ultra portable ham radio digital comm
  [ Hits: 412 | Votes: 0 | Rating: 0 ]

• Radio N9SKN /P QRP Field Operations - Personal web site by N9SKN about portable QRP operations with pictures of several portable setups and antenna solutions.
  [ Hits: 145 | Votes: 0 | Rating: 0 ]

• PZTLog - A free easy-to-use logging application with simple/quick entry of various QSO fields plus some additional features.
  [ Hits: 807 | Votes: 0 | Rating: 0 ]

• RF Safety at Field Day - A case study of Field Day 1998 with the North Shore Radio Club (NSRC) in Village Green Park, Northbrook, Illinois
  [ Hits: 378 | Votes: 0 | Rating: 0 ]
• RF Safety in Tower Climbing - The risks for exposure to significant levels of RF radiation is high for tower climebers, the RF field levels near FM radio and television antennas are extremely high.
  [ Hits: 192 | Votes: 0 | Rating: 0 ]
• Magnetic Loop RF Safety - Notes on the intensity of RF Field calculated on magnetic loop antennas. The magnetic field intensity of a mag loop is considerably higher than the E field probably due to the inductive portion of the resonant circuit creating the radiation (magnetic) in the near field
  [ Hits: 858 | Votes: 3 | Rating: 4 ]

• What is SWR - standing-wave ratio - Article about Standing-wave ratio (SWR) defined as a mathematical expression of the non-uniformity of an electromagnetic field on a transmission line. SWR is the ratio of the maximum radio-frequency (RF) voltage to the minimum RF voltage along the line.
  [ Hits: 191 | Votes: 0 | Rating: 0 ]

• Antuino - Antenna Test Equipment - Antuino is an accurate instrument that can be used in the field to measure SWR, field strength, modulation, etc. In the lab, it can be used to sweep filters, measure gain, distortion, frequency response, etc. It works upto 150 Mhz. On the third harmonic, it is usable on 435 Mhz band as well (with reduced sensitivity).
  [ Hits: 305 | Votes: 0 | Rating: 0 ]

• miniVNA PRO Modifications - The mini Radio Solutions miniVNA PRO is the only affordable vector network analyser (VNA) I know of that offers remote wireless operation. This is very interesting because it allows to measure the input impedance of HF antennas installed at height without having to deal with coax cable lengths, baluns nor common mode suppression chokes. However, to render the miniVNA PRO truly field proof, it requires a number of significant modifications.
  [ Hits: 136 | Votes: 5 | Rating: 7.8 ]

Pages: [prev] 1 2 3 4 5 6 7 8 9 10 11 12 13 [next]