feeder

feeder

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• 2m Quad Turnstile Antenna - The loops are made of 10 mm round aluminum tube. No bending pliers was used to gently bend 90 degrees to obtain a square with 53 cm inner sides. Each loop has an impedance of approximately 100 Ohm. To connect both radiators in phase, a quarter wave long feeder of 100 Ohm is required.
  [ Hits: 207 | Votes: 0 | Rating: 0 ]

• Switchable Antenna 80/160 meters band - A switchable antenna for 80/160 meters by IK1ZOY. A new version of a 1/4L 80 m. dipole modified for use in 160 m. band. using it's own coaxial cable feeder to wrap a coil.
  [ Hits: 17199 | Votes: 6 | Rating: 5.5 ]

• 20m Half-Wave End Fed - A Half wave antenna has a high impedance feed point. This can be matched using a 1/4 wave stub matching section and converts the 40m vertical into an L-shaped 20m J-Pole antenna. The 300 ohm feeder used for this purpose must be kept away from the ground.
  [ Hits: 1845 | Votes: 7 | Rating: 8 ]
• 1:49 unun for end fed half wave antennas - 1:49 UNUN using two stacked FT240-43 cores for end fed halfwave antenna. To match the end fed half wave antenna to the coaxial feeder, it is necessary to have a matching network or transmission line transformer.
  [ Hits: 398 | Votes: 10 | Rating: 8.1 ]

• Antenna Feeders - Different types of feeders, SWR and matching
  [ Hits: 492 | Votes: 1 | Rating: 2 ]
• Feeder Radiation - Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes
  [ Hits: 1830 | Votes: 4 | Rating: 8 ]
• Coaxial feeder or RF coax cable - An overview of coax cable often called coaxial feeder or RF cable, used to feed antennas and deliver radio frequency power from one point to another
  [ Hits: 647 | Votes: 3 | Rating: 3.67 ]
• Feeder types - Article descrive the different types including coax and open-wire feeder and waveguide.
  [ Hits: 337 | Votes: 0 | Rating: 0 ]
• Antenna feed impedance - Article on antenna feed impedance and the importance of matching RF andtennas to feeders, including notes on Radiation resistance, loss resistance, and efficiency are also detailed.
  [ Hits: 430 | Votes: 1 | Rating: 10 ]

• Open Wire Feeders - How to make 450 ohm open feeder
  [ Hits: 8246 | Votes: 9 | Rating: 7.34 ]

• The G5RV Antenna System Re-Visited - The original G5RV antenna system consists of a center-fed horizontal 102' wire plus a 34' length of open-wire 525-Ohm feeder. Louis Varney, the antenna system's developer, intended two other features. Learn more at Cebik website
  [ Hits: 4663 | Votes: 0 | Rating: 0 ]

• Helical Antennas -Theory - Helical antenna or helix antenna is the antenna in which the conducting wire is wound in helical shape and connected to the ground plate with a feeder line. It is the simplest antenna, which provides circularly polarized waves.
  [ Hits: 137 | Votes: 0 | Rating: 0 ]

• 88' Zig Zag Double Extended Zepp - A Double Zepp indoor antenna based on Cebik's reccomendations and design. Can cover HF bands, fed with 450 ohm open wire feeder terminating in an automatic antenna tuner, can perform incredible results.
  [ Hits: 2686 | Votes: 7 | Rating: 6.71 ]

• G5RV Antenna  ^pop - The G5RV antenna, with its special feeder arrangement, is a multiband centre-fed antenna capable of very efficient operation on all hf bands from 3.5 to 28 MHz
  [ Hits: 75173 | Votes: 98 | Rating: 6.32 ]

• A 100W Z-Match for 160m to 10m - This is a project by F5IMV devided to build a balanced Z-match, capable of matching an unbalanced 50 ohm transmitter output into an antenna fed by balanced feeders.
  [ Hits: 2072 | Votes: 5 | Rating: 6.4 ]

• Windom Antenna with 4:1 balun - The Windom is an Off-center wire multiband Antenna. The old version was fed just by a single-wire connected on 1/3 of antenna's overall length or with an open-line feeder (later versions). Here is another model with coaxial feeder, which is compatible with Solid States - 50 Ohm output transceivers .
  [ Hits: 8027 | Votes: 9 | Rating: 6.89 ]

• IK-Telecom - The official web-site of the firm IK-Telecom, Finland, manufacturer of base station antenna-feeder systems
  [ Hits: 832 | Votes: 0 | Rating: 0 ]

• Maxdao Technologies - Maxdao: offer you 7/16, N coaxial connectors, jumper cables, feeder clamps and grouding kits, surge arresters & brackets, wall entries and microwave components used in base tower, power dividers, couplers
  [ Hits: 547 | Votes: 1 | Rating: 10 ]

• Remote antenna switch - A remote antenna change-over switching using relay powered over the coaxial feeder
  [ Hits: 2283 | Votes: 1 | Rating: 8 ]
• Five Antennas Switch Box - A project of a 5 Antennas Relay Switch Box, all Switches & Relays have both contacts wired in parallel to improve reliability of operation, to prevent static build up, when an antenna is not in use the feeder coax is grounded.
  [ Hits: 1249 | Votes: 1 | Rating: 10 ]

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