40 meter band

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40 meter band

247 links - and 4 categories

Antennas : 40M : 40 meter Delta Loop Antennas
  • Delta Loop DX Antenna for 40 meters band - A monoband delta loop antenna for the 7 MHz. This vertically polarized DX Antenna is a full wavelength sngle side antenna and has a total length of 42.3 meters (137,1 inch) Can be easily setup with a flag pole or fishing pole as center top mast. For optimal performance lower side should be at 2 meter above the ground. This antenna offers a low radiation angle and 1 DB Gain.
    [ Hits: 431 | Votes: 3 | Rating: 6.33 ]
  • Delta Loop for 40 and 20 meter Band by UR0GT - This wire antenna for 40 and 20 meter band feature a good SWR. Horizontal side of the antenna is placed at two meters above the ground. Impedance of the antenna are depending by the height of the base from the ground and conditions of the ground
    [ Hits: 533 | Votes: 5 | Rating: 7.8 ]
Antennas : 40M : 40 meter Dipole Antennas
  • 40m Linear-Loaded Dipole - A short dipole wire antenna for 40 meters band. It is a folded dipole that do not make use of coils and can be used either in horizontal or inverted V configuration
    [ Hits: 1502 | Votes: 3 | Rating: 8.67 ]
Antennas : 40M : 40 meter Vertical Antennas
  • 40m Vertical End-Fed Antenna - A quarter wave vertical end-fed antenna for the 40 meters band. As all vertical antennas, also this aerial requires a good earthing system. In this project the ground is composed by twelve 4, wires buried in the lawn by using a spade to create a slit to drop the wire into.
    [ Hits: 2688 | Votes: 7 | Rating: 5.43 ]
Antennas : 40M : 40 meter Yagi Antennas
  • 3 Element Yagi for 40 Meters  updated - An homebrew project for a 3 element coil-loaded Yagi beam antenna for 40 Meter band
    [ Hits: 1082 | Votes: 2 | Rating: 5 ]
Antennas : 80M
  • Shortened 80m Antenna - An antenna for 80 meters band for those who does not have enough space to setup a halwave wire dipole that is aprox 130ft or 40 meters. The antenna is an open-wire-fed shortened dipole
    [ Hits: 420 | Votes: 1 | Rating: 1 ]
Antennas : Bazooka
  • Bazooka para 40 metros - A bazooka coax antenna for 40 meters band design by CA6TYS
    [ Hits: 687 | Votes: 0 | Rating: 0 ]
Antennas : Delta loop
  • The 40/30 Pyramid - A dual band delta loop antenna resonating on 30 and 40 meters band using a single wire for the top slopers on both 30 and 40 meters and does not need any balun
    [ Hits: 704 | Votes: 0 | Rating: 0 ]
Antennas : End-Fed
  • End-Fed antenna for 17 and 12 meters - Article about an end-fed anntenna for the 17 and 12 WARC Bands. 30 meters is not included in this project. This antenna includes a 14 windings unun impedance transformer using a FT-140-43 ferrite toroid, that should be enought for a 100W PEP.
    [ Hits: 539 | Votes: 3 | Rating: 4.33 ]
Antennas : Fan Dipole
  • Compact fan dipole for 40 30 and 20 meters band - An homemade fan dipole antenna for 20 30 40 meter bands, setup in a 15 meter wide garden. The longest leg for 40 meter is folded to fit in the 7.5 m
    [ Hits: 1134 | Votes: 0 | Rating: 0 ]
  • The KL3JM modified SRI Fan Dipole for 80-40-20 Meters - The antenna in this project is a modification of the techniques used to design a multiband fan type dipole with little or no tuning involved having a total space of 105 feet
    [ Hits: 500 | Votes: 1 | Rating: 5 ]
  • Half Wave Fan Dipole Antenna - Amateur Radio 40m 20m 15m Half Wave Fan dipole antenna project with part list, pictures and drawing. Includes the option to expand the antenna to cover the 80 meters band
    [ Hits: 678 | Votes: 1 | Rating: 1 ]
  • 6 Bands Fan Dipole Antenna - Extension to an existing fan dipole originally modeled for 40 20 and 6 meters. This modification will add 80 15 and 10 meter bands.
    [ Hits: 1297 | Votes: 2 | Rating: 5 ]
Antennas : Magnetic Loop
  • Magnetic Loop Antenna for 40-20m - If you have space constraint at your QTH for a HF antenna, you can try contructing this HF magnetic loop antenna for 40-20 meters bands
    [ Hits: 1527 | Votes: 2 | Rating: 3 ]
Antennas : Morgain
  • Morgain 40-80 by IM0JZJ - This folded dipole, can be even built for 10 and 20 meters band, and can also give good results on 15 meters, with the sole lenght of just 20 meter of total lenght. Originally born to work on 40 meters, can be adapted for any band.
    [ Hits: 1711 | Votes: 7 | Rating: 6.71 ]
Antennas : Portable
  • Portable Vertical Antenna - A home made portable vertical antenna, that with a single 1/4 wave counterpoise wire is possible to achieve less than 1.5:1 SWR on 40, 30, and 20 meter bands. It is basically a center load, shortened ground plain vertical antenna.
    [ Hits: 362 | Votes: 0 | Rating: 0 ]
  • Balcony Mounted Buddistick Antenna by KP4MD - The antenna handles 250 watts and covers 40 through 10 meters, with an optional add on coil for 80 and 60 meters. The author in this pages includes an interesting video in which describes the antenna setup, and the importance of the shunting coil on lower bands like 40 and 80 meters. SWR curves diagrams are also included and demonstrate the influence on resonating frequency of the shunting coil.
    [ Hits: 279 | Votes: 3 | Rating: 10 ]
Antennas : Wire
  • Cobra Antenna - A folded dipole - A wire dipole antenna for the 80 and 40 meters band obtained by folding elements of a dipole and feeding with a 1:4 balun.
    [ Hits: 1052 | Votes: 5 | Rating: 6.8 ]
DX Resources : Contest
  • World Wide Digi DX Contest - World Wide Digi DX Contest 2019 The contest will occur over 24 hours on August 31 and September 1, 2019 using the FT4 and FT8 modes on the 160, 80, 40, 20, 15, and 10-meter bands.
    [ Hits: 154 | Votes: 0 | Rating: 0 ]
Technical Reference : HF Radios
  • PT40 7 MHz Transceiver by AA3SJ - Home made 40 meter transceiver project. The receiver is a Progressive Receiver with a few modifications. The Transmitter is a modified MFJ Cub circuit. Includes schematic and circuit diagrams for Receive Input Filter, 3-Pole 500 Hz Cohn Filter and 7 MHz Double Tuned Bandpass Filter
    [ Hits: 162 | Votes: 0 | Rating: 0 ]

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