ladder

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ladder

41 links

Antennas : 40M
  • The 40M Extended Double Zepp - A 5/8 wave antenna, can be fed with ladder line from the center insulator to tuner.
    [ Hits: 1132 | Votes: 2 | Rating: 10 ]
Antennas : 4M Antennas : 6M : 6 meter J-Pole Antenna Antennas : 80M
  • 80m Vertical Loop - The configuration of this antenna is a triangle with apex in the top of a very tall tree. The antenna is fed at a bottom corner using 450 ohm ladder line.
    [ Hits: 783 | Votes: 1 | Rating: 8 ]
Antennas : Baluns
  • When and Where to Use Baluns - Baluns are usually used by Hams to feed dipole antennas with 50 ohm coax and to transpose from ladder line feeding a multi-band antenna to the unbalanced input of an antenna tuner.
    [ Hits: 1518 | Votes: 9 | Rating: 7 ]
Antennas : Beverage
  • Beverage Receive Antenna - The Beverage we use is a DX Engineering RPS-1 dual directional 360 foot 109,7 m, oriented due North/South, six feet 1,8 m off the ground. The antenna uses 450 ohm ladder line as the antenna, and 75 ohm RG-6u for the feedline. The antenna runs atop the fence between our property and 5 acres of pasture next door.
    [ Hits: 149 | Votes: 4 | Rating: 7.25 ]
Antennas : Dipole
  • A 10-6-4 three band dipole antenna - A home made dipole antenna for 10m, 6m, 4m bands made with two sections of 450 and 300 Ohm ladder lines, cut to achieve acceptable SWRs on all bands
    [ Hits: 1016 | Votes: 5 | Rating: 8.2 ]
  • Multiband Dipole Antennas Compared - A comparison of multiband dipoles, including jumpered dipole versus fan dipole antennas, dipole fed by ladder line, resonant dipoles antennas. ARRL lab notes
    [ Hits: 793 | Votes: 3 | Rating: 4.33 ]
Antennas : Feed Lines
  • The Ladder line - Myths and information about ladder line by KV5R
    [ Hits: 463 | Votes: 0 | Rating: 0 ]
Antennas : Loop
  • Quad Loop Antenna for 50 MHz - Building A Full-Wave Quad Loop Antenna for 6 Meters. This is an easy antenna to build and the materials cost about $15-20. It exhibits 1.8dB gain over a 1/2-wave dipole. Using an open-wire parallel feedline (commonly called ladder line) with an antenna tuner, it tunes up on the 10m band as a 5/8-wave loop as well
    [ Hits: 196 | Votes: 1 | Rating: 1 ]
Antennas : Slim Jim
  • 2m Slim-Jim Aerial using Ladder-Line - The Slim-Jim is a bit of a classic - building one is almost certainly a rite of passage and you will be glad that you did: It is easy to make, fairly easy to tune and rolls-up for transportation.
    [ Hits: 184 | Votes: 2 | Rating: 10 ]
  • 2m Slim Jim portable antenna for SOTA - Construct a portable 2m Slim Jim antenna for improved HT signal quality. Utilizing 450 ohm ladder line, the design offers flexibility, durability, and easy deployment. Tuning tips and mounting options enhance its efficiency in handheld transceiver communications
    [ Hits: 67 | Votes: 0 | Rating: 0 ]
Antennas : Towers
  • Antenna Safety - Elevated Work Platforms - Accessing antennas at great height poses many potential safety hazards. Essentially, climbing ladders or scaling towers, regardless of whether or not a commercial safety harness is fitted, is risky business indeed particularly for those hobbyists in their latter years or not as physically capable as others.
    [ Hits: 287 | Votes: 0 | Rating: 0 ]
Antennas : Wire
  • Doublet antenna as vertical T - A transmitting antenna 2x15m, about 100 foot doublet antenna fed by a ladder line of about 600 Ohm. Article in Polish and English,
    [ Hits: 118 | Votes: 0 | Rating: 0 ]
Antennas : ZS6BKW
  • ZS6BKW Antenna - How to Build a ZS6BKW Antenna, an optimised version of the popular G5RV multiband Antenna, basically a random length dipole with a 450 Ohm ladder line acting as a 1:1 transformer by VK4MDX
    [ Hits: 1746 | Votes: 2 | Rating: 7.5 ]
  • Some Useful ZS6BKW Modifications - The ZS6BKW antenna evolved from an optimization of the G5RV antenna. The SWR on 80m is too high and the 40 ft ladder line matching section is a little too long on 17m and a little too short on 10m
    [ Hits: 1017 | Votes: 3 | Rating: 4 ]
  • ZS6BKW wire antenna - A home made ZS6BKW multiband antenna includes the construction of the plastic support for the ladder line
    [ Hits: 846 | Votes: 3 | Rating: 9.67 ]
Manufacturers : Antennas : HF : Dipole Antenna Technical Reference : Coax Cables and Connectors
  • Coax Loss Calculator Online by K5VR - RF Feedline (Coax and Ladder-Line) Loss and ERP Calculators made with Javascript. This complex feddline loss calculator has already several line types paramenters for most common coaxial cables from Belden, Time LMR, Wireman and other common products. Result will give Matches loss, SWR loss, dB and Watts power loss.
    [ Hits: 249 | Votes: 2 | Rating: 5 ]
Technical Reference : Filters
  • Cheap Crystal Filter - An economical way of building an SSB filter. The circuit is for a filter with a 6 DB band width of roughly 2.2 KHz.
    [ Hits: 496 | Votes: 0 | Rating: 0 ]

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