l antennas

l antennas

Pages: [prev] ... 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 ... [next]

• Antennas for 160m - The best results work when you have an antenna with a large vertical component. It is difficult to get a horizontal antenna (dipole) high enough to be an effective antenna on 160. However, there are several easy things you can do with your present antenna to initially get on the best amateur radio band
  [ Hits: 1105 | Votes: 0 | Rating: 0 ]

• 2m Big Wheel Antenna - A Useful Horizontally Polarised Omni-directional Antenna with Gain for 144 MHz
  [ Hits: 1276 | Votes: 4 | Rating: 7.75 ]

• Small Transmitting Loop Project - Article about small magnetic loop antennas with notes on realization of magnetic loops for several HF bands and the six meter band
  [ Hits: 1033 | Votes: 3 | Rating: 10 ]
• 40m Small Loop Antenna - A well documented article on a small magnetic loop antenna for the 40 meters band
  [ Hits: 2353 | Votes: 6 | Rating: 4.83 ]

• Switchable MTFT for Wire-Antennas - A switchable Magnetic Transformer for Transmitting for various impedances
  [ Hits: 1166 | Votes: 86 | Rating: 7.92 ]

• 20 40 80 Trapped Dipole - An homemade portable trapped dipole antenna for 40 and 80 meters band with an optional extension for the 20 meters.
  [ Hits: 1345 | Votes: 9 | Rating: 5 ]

• Multiband end fed antennas - This is a 200 Watt PEP step up transformer for end fed full and half wave antennas without radials, designed as a 200 Watt PEP
  [ Hits: 2255 | Votes: 9 | Rating: 7.32 ]

• Broadcast Antennas on Buildings - When a broadcast antenna is to be placed on top of a building, there are special problems of feeding and grounding. The radiator is usually electrically short, that is, much less than one-quarter wavelength high.
  [ Hits: 350 | Votes: 2 | Rating: 10 ]

• Home made High Power Magnetic Loop Antennas - Magnetic Loop Antennas for The Radio Operator with Limited Space, a two part series of articles on how to construct a magnetic loop antenna, including directions on selecting high voltage tuning capacitor
  [ Hits: 878 | Votes: 0 | Rating: 0 ]

• 5 Band Telescopic Vertical Antenna - 5 Band 1/4 wave Telescopic Antenna. The 20m to 10m, antenna is simple and cheap to make, and has a performance that matches commercial antennas but at cost considerably lower. The design was purposely based on a telescoping fibre glass fishing rod as this allows it to be easily stowed away in the car.
  [ Hits: 3477 | Votes: 3 | Rating: 9.33 ]

• Asymmetrical Hatted Vertical Dipole - Theory and origins of W4RNL Asymmetrical Hatted Vertical Dipole AHVD for portable operations.
  [ Hits: 735 | Votes: 0 | Rating: 0 ]
• Overview on some SOTA portable antennas - A review of some portable antennas for SOTA operations, including linked dipoles, end-fed, verticals
  [ Hits: 663 | Votes: 1 | Rating: 4 ]
• Portable or Emergency VHF Antennas - Ground Plane - 1/4 wave vertical, J-Pole, 3 Element Yagi Beam and simple antenna supports
  [ Hits: 979 | Votes: 1 | Rating: 8 ]

• Balloon Vertical Omni-Antennas - Experimenting vertical wire antennas for 40 and 20 meters supported by balloons resulting in excellent gain in RX and good overall performance against horizontal dipole
  [ Hits: 756 | Votes: 1 | Rating: 5 ]

• W3EDP Antenna Notes - Hints for building a W3EDP-Antenna, includes the construction of the 1:4-balun by DK7ZB
  [ Hits: 907 | Votes: 3 | Rating: 9.33 ]

• Basic Wire Antennas Part II - Presentation about wire antennas, focusing on Loops , inverted L and Verticals
  [ Hits: 905 | Votes: 3 | Rating: 9 ]
• Basic Wire Antennas Part I - A presentation of popular wire antenna models like Dipoles, half size, full size, doble zepp, ocf dipoles, G5RV
  [ Hits: 1572 | Votes: 0 | Rating: 0 ]

• JK Antennas - US amateur radio antenna manufacturer, design and build monoband, dual band and multiband Yagi Antennas for HF bands as well as receive antenna systems
  [ Hits: 713 | Votes: 1 | Rating: 10 ]

• DUAL - Antenna and ham equipment manufacturer in Serbia. The Dual company has been producing antennas for more than 25 years focusing on wide bandwidth, designs that work equally well in all weather conditions, very low SWR and superior G/T, F/B and F/S ratios
  [ Hits: 372 | Votes: 2 | Rating: 6 ]

• PL259 Surge Arrestor - Limiting static surges on dipoles, verticals or end fed antennas
  [ Hits: 870 | Votes: 0 | Rating: 0 ]

Pages: [prev] ... 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 ... [next]