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342 links - and 5 categories

Antennas : 40M : 40 meter Vertical Antennas
  • 7Mhz Vertical antenna - The secret with this antenna is to install as many radials as you can around the base of the antenna, they can be anything from 1/8 wave or longer.
    [ Hits: 24121 | Votes: 15 | Rating: 4.14 ]
Antennas : End-Fed
  • How to make an end-fed antenna work  pop - Here is a sure fire way to make end-fed halfwave antennas fed with a 50 ohm coupler work - without long radials, grounds, chokes, voodoo.
    [ Hits: 43947 | Votes: 30 | Rating: 6.71 ]
Antennas : End-Fed : End Fed Half Wave Antenna
  • End-Fed Halfwave Antenna - The end-fed halfwave antenna is a resonant half wavelength long antenna like a dipole antenna except for it is fed at its end rather then in the center. This antenna is as old as radio and is probably best known as the Zepp Antenna
    [ Hits: 24207 | Votes: 18 | Rating: 7.55 ]
Antennas : Feed Lines
  • Antenna Transmatch Tips - Tips on tuning antennas using Antenna Tuning Units also called ATU. This article explains the functions and ills of tuners, along with some guide- lines for building an ATU.
    [ Hits: 3312 | Votes: 5 | Rating: 6.4 ]
Antennas : Longwave
  • Antennas for 136kHz - A very long and exaustive documentation on building antennas for 136 khz. Includes links to antenna design software for longwave
    [ Hits: 4784 | Votes: 4 | Rating: 8 ]
Antennas : Multiband
  • PAC-12 Antenna - mobile multiband - Here's an award-winning, easy-to-homebrew, multi-band portable vertical antenna designed by long-time antenna aficionado James Bennett, KA5DVS. He documented the design and construction plans for a portable antenna that can be built with relatively ordinary components
    [ Hits: 20911 | Votes: 16 | Rating: 7.68 ]
Antennas : Portable
  • M1IOS - Wonder Whip antenna and tuner - M1IOS Wonder Whip antenna - The M1IOS Wonder Whip A 10 dollars QRP Portable Multiband Antenna for HF, VHF and UHF A variation on the Miracle Whip and Wander Wand. This antenna tuning unit will get your SWR really low on telescopic whips, mobile 3/8th antenna and long wires. A remarkable little tuner that really works!
    [ Hits: 14505 | Votes: 24 | Rating: 9.04 ]
Antennas : Shortwave
  • Long Loopstick Antenna - Wound on a 3 foot length of PVC pipe, the long loopstick antenna was an experiment to try to improve AM radio reception without using a long wire or ground.
    [ Hits: 4376 | Votes: 1 | Rating: 10 ]
Antennas : Vertical
  • PAC-12 Vertical portable antenna - Build the PAC-12 Antenna a multi-band portable vertical designed by KA5DVS, here's an award-winning, easy-to-homebrew, multi-band portable vertical antenna designed by long-time antenna aficionado James Bennett, KA5DVS. He's documented the design and construction plans for a portable antenna
    [ Hits: 11664 | Votes: 8 | Rating: 6.87 ]
  • A low cost fishing pole vertical antenna  pop - This antenna is based on a 10 Metre long fibreglass fishing pole
    [ Hits: 25672 | Votes: 52 | Rating: 7.19 ]
Ham Radio : Blogs : USA
  • KE9V Long delayed echoes - a Podcast for amateur radio enthusiasts... by jeff davis, ke9v
    [ Hits: 717 | Votes: 5 | Rating: 8.2 ]
  • KB1NIR Blog - KB1NIR B.K. DeLong personal blog
    [ Hits: 327 | Votes: 0 | Rating: 0 ]
Operating Modes : DSP
  • Mfsk - MFSK is an easy-to-use chat mode for real-time amateur contacts, nets and bulletin transmissions, but not intended for contesting or Bulletin Board System (BBS) use. It is a half-duplex non-Automatic Repeat ReQuest (ARQ) forward-error-correcting (FEC) mode. It performs well on long-path fading conditions and in the presence of interference
    [ Hits: 497 | Votes: 0 | Rating: 0 ]
Operating Modes : Longwave
  • Longwave operations - In the VLF portion of the spectrum it is easy to listen to the emissions created by the Earth itself. These emissions are generated by many different mechanisms and are often beautiful to listen to. Coverage on LF and MF frequencies
    [ Hits: 832 | Votes: 0 | Rating: 0 ]
Operating Modes : MFSK
  • Mfsk - MFSK is an easy-to-use chat mode for real-time amateur contacts, nets and bulletin transmissions, but not intended for contesting or Bulletin Board System (BBS) use. It is a half-duplex non-Automatic Repeat ReQuest (ARQ) forward-error-correcting (FEC) mode. It performs well on long-path fading conditions and in the presence of interference
    [ Hits: 994 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Transceivers : Yaesu FT-817 Software : Antenna analysis
  • HamCalc v1.3  pop - HamCalc is a free collection of calculators for radio amateurs include Antenna ERP calculations, Attenuators, Audio Filter design, Coil Winding, Decibels, Great Circles map and calculator, HF Filters, HF Traps, Metric conversions OP Amps QRA Locator to Latitude/Longitude, Radio Horizon calculator, Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations Download zip By G4VWL
    [ Hits: 28818 | Votes: 114 | Rating: 5.57 ]
Software : DRM
  • Dream  updated - Opensource software implementation of a DRM Receiver. Digital Radio Mondiale (DRM) is a new digital radio standard for the long-, medium- and short-wave ranges
    [ Hits: 15865 | Votes: 19 | Rating: 5.84 ]
Software : Satellite tracking
  • 0sxsat - On the Satellitenprogram of DJ0SX Peter one can provide time schedules for over 500 satellites or count 23 satellites real-time imTextmode. The large advantage exists in thought out and of long observation practice which are due flexibility in the selection and the requirements to a satellite program. The program runs under Windows 95/98, NT, XP, 2000
    [ Hits: 5019 | Votes: 6 | Rating: 4.5 ]
Technical Reference : Coax Cables and Connectors

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