antenna 12 m

antenna 12 m

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• Short DL6WU yagi for 23cm - 1260 MHz yagi antenna for ATV with a total Bandwidth (3 dB) 1240-1280 MHz and 10 dBd gain
  [ Hits: 138 | Votes: 1 | Rating: 4 ]
• DL6WU Yagi Antennas for 1200 MHz - Dubus article about DL6WU long yagi antennas for 23 cm band Article is both in german and english. Yagi antennas are valid alternative to dishes for troposcatter operations. This article explains design and mechanical data for 1296 MHz Yagi Antennas
  [ Hits: 320 | Votes: 1 | Rating: 10 ]
• 35 Element Yagi Antenna for 23cm - Antennas for the 1296 MHz based on the construction plans of some Yagis 35 elements by DL6WU, F9FT, DJ9YW. These antennas features a boom of about 3 m and gives a gain of about 17.8 dBd
  [ Hits: 210 | Votes: 1 | Rating: 7 ]
• Yagi antenna for 23 cm - Homebrew 23 cm 12 element Yagi Antenna based on the DL6WU design. This articles include several pictures of the yagi antenna along with detailed element size and spacing.
  [ Hits: 161 | Votes: 0 | Rating: 0 ]

• 30m Half -Size Rotary Dipole - A rotary dipole antenna for 30 meters band. Each arm is about 12.5 ft and is constructed from telescoping fibreglass flag/fishing poles and short lengths of aluminium tubing. Two short lengths of glass-fibre rod were used to insulate the arms from the supporting hardware.
  [ Hits: 198 | Votes: 0 | Rating: 0 ]

• Slot-Cube Antenna for 6 Meters - Slot cubes are folded skeleton slot antennas with widened, folded dipoles bent into a cube to reduce size. QST Article 12 2019
  [ Hits: 580 | Votes: 2 | Rating: 5.5 ]

• 6el LFA Yagi for 50MHz - This six element LFA Yagi for six meters has a 1.5 inch square boom with a 1.5 inch secondary boom beneath the first. This ensures the 7.3 metre long boom will not sag and will not require any guying. This antenna has 12.3 dBi Gain and just over 23dB F/B.
  [ Hits: 117 | Votes: 2 | Rating: 4 ]

• 80m Shortened Dipole Antenna - This antenna just requires about 24m of free space instead of 41m that a normal half wave 80m antenna needs to hang up. The so called loaded dipole uses a coil in every dipole arm to electrically lengthen the mechanical too short dipole arms. Every coil has an inductivity of 120 microHenry.
  [ Hits: 154 | Votes: 0 | Rating: 0 ]
• 80m Inverted-L 12m Spiderpole - An Inverted-L with its long leg sloping to the ground. It will still work very good, even if the horizontal wire has to be sloped diagonally to the ground, as long as you have enough horizontal space to keep it at about a 45 degree angle or more from the pole.
  [ Hits: 150 | Votes: 0 | Rating: 0 ]

• Testing End Fed Long Wire Antenna - Testing a 27.2 metre end fed long wire antenna,used for SOTA activations placed as an inverted V. The author reports in this article an on the field practical result.
  [ Hits: 168 | Votes: 0 | Rating: 0 ]

• How to find out if your choke works - How many times have you heard the advice to coil a few turns of coax at the antenna end to form a choke. How to find out if your common mode current choke really works
  [ Hits: 211 | Votes: 1 | Rating: 9 ]

• The M0CVO HW-42HP OCF Antenna - A multi-band off centre fed dipole, designed to operate on all bands from 40m (7MHz) to 6m (50MHz). Author claims it will operate on 40, 30, 20, 17, 15, 12 and 10m without an ATU (SWR <3:1) plus 6m with an ATU.
  [ Hits: 274 | Votes: 0 | Rating: 0 ]

• Practical Balcony Version of an Old Military Car Antenna - The antenna almost repeat the design of the Car Antenna however instead of aluminum tubes it was used copper wire in plastic insulation in diameter of 2- mm (12 AWG).
  [ Hits: 390 | Votes: 2 | Rating: 7.5 ]
• Balcony Dipole Antenna for 20 Meter  ^updated - Antenna may be made practically from any wire (strand, solid) having a reasonable diameter 0.5 2.0 mm (24- 12 AWG). Antenna may be installed at any balcony of 3 to 6 meter length.
  [ Hits: 341 | Votes: 4 | Rating: 10 ]
• A simple Attic Antenna for HF bands - This simple antenna was installed on the attic. Antenna was matched with help an Automatic ATU in 40, 30, 20, 17, 15, 12 and 10 meter amateur Bands. The Antenna worked satisfactory on the above mentioned bands.
  [ Hits: 316 | Votes: 7 | Rating: 6 ]

• Folded Dipoles in Yagi Uda Antennas - A folded dipole is an antenna, with two conductors connected on both sides, and folded to form a cylindrical closed shape, to which feed is given at the center.
  [ Hits: 314 | Votes: 2 | Rating: 4.5 ]

• Tri-Band VHF/UHF Antenna Design - The TBJ-1 – a triband base antenna was published in March 2017 QST. This antenna covers 2M/220 MHz/70cm in one 6ft 3/4 inch PVC pipe and requires no radials.
  [ Hits: 213 | Votes: 0 | Rating: 0 ]

• UR5WT WebSDR on 80m - This WEBSDR runs on Raspberry PI4-8G, Afedri-Net RX for 160m, RTL-SDR stick with homemade SBL1 mixer upconverter and fullsize 160m Delta loop antenna 4m up. Operated from Ukraine by UR5WT, US5WE and UX5DH,
  [ Hits: 154 | Votes: 1 | Rating: 9 ]

• NA4RR HexBeam - NA4RR manufacture a six band hexagonal beam antenna for ham radio, covering 6, 10, 12, 15, 17, and 20 meter.
  [ Hits: 157 | Votes: 0 | Rating: 0 ]

• Automatic Arduino Antenna Switch - A Programming-Free Automatic Arduino Antenna Switch project published on NCJ
  [ Hits: 451 | Votes: 0 | Rating: 0 ]

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