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Antennas : 10M Antennas : 2M
  • The Sperrtopf antenna for 2 meter band - By ON4CFC Pascal, describe how to build a Sperrtopf or Sleeve antenna for the 144 Mhz, PDF File by antennex
    [ Hits: 2671 | Votes: 4 | Rating: 6.5 ]
  • ZR6KMD 2M Beam Antenna - This design was adapted from an article in the ARRL Handbook and built with simplicity and duplicity in mind. This antenna is a vast improvement over a standard dipole with a forward gain of around 8db with a front to back ratio of 10db.
    [ Hits: 2222 | Votes: 1 | Rating: 2 ]
Antennas : 80M
  • 40-80 Dipole antenna - A 40 80 dipole antenna design by WA6ESC PDF File
    [ Hits: 2647 | Votes: 3 | Rating: 5.33 ]
Antennas : Dipole
  • Rotatable Dipole for 40m-6m - This article describes a simple, inexpensive, dipole antenna that will rival the performance of a ten-meter beam.
    [ Hits: 4839 | Votes: 8 | Rating: 8.25 ]
Antennas : Feed Lines
  • Where Does the Power Go - An Energy Analysis at an Impedance Discontinuity in an RF Transmission Line
    [ Hits: 735 | Votes: 3 | Rating: 10 ]
Antennas : J-Pole
  • Copper Cactus J pole 2 metter 70 Cm dualband - Homebrew a j-pole 2mt and 70 cm antenna project. Make it cheap. This article includes homebrewing instructions, parts lists, tools needed and printable documentation.
    [ Hits: 10348 | Votes: 29 | Rating: 6.35 ]
Antennas : Loop Antennas : Multiband Antennas : Theory
  • Currents in Standing-Wave Antennas - How can the current "flowing" out of the top of a mobile loading coil be greater than the current "flowing" into the bottom of the coil?
    [ Hits: 638 | Votes: 0 | Rating: 0 ]
Ham Radio : Band Plans
  • ARRL US amateur radio bands - Download this color US ham radio band-plan in PDF format edited by ARRL
    [ Hits: 11615 | Votes: 19 | Rating: 6.58 ]
Operating Aids : Grid Squares
  • US Grid Square Map - A PDF file containing the US grid square map provided by Icom america.
    [ Hits: 5695 | Votes: 15 | Rating: 7.94 ]
Operating Aids : Maps
  • ITU Zones map - Free Donwload of the PDF file of ITU and CQ zones of the world, made available by Icom America
    [ Hits: 2559 | Votes: 9 | Rating: 6.97 ]
  • CQ Zones World Map - A 6 Mb PDF file of CQ Zones and ITU Zones and prefixes made available to download by Icom America.
    [ Hits: 12010 | Votes: 52 | Rating: 6.91 ]
Operating Modes : Packet Radio : Beginner's Guide
  • PacketRadio primer - The Packet Radio beginners guide to packet radio operating by Buck Rogers K4ABT
    [ Hits: 1007 | Votes: 0 | Rating: 0 ]
Radio Equipment : HF Transceivers : Kenwood TS-940S
  • KENWOOD TS-940 Page - Comprehesive page on TS-940 TS-940 reference maintained by ZL4AI Jeff
    [ Hits: 4105 | Votes: 13 | Rating: 8.3 ]
Radio Equipment : HF Transceivers : Kenwood TS-950SDX
  • Kenwood TS-950 page - Lot's of info on 950sdx tranceiver by Jeff King ZL4AI/DU7
    [ Hits: 3021 | Votes: 12 | Rating: 8.6 ]
Radio Equipment : HF Transceivers : Yaesu FT-857
  • FT-897D Modification sheet - Lot's of FT 897 and FT 857 modifications in a single PDF file
    [ Hits: 15154 | Votes: 20 | Rating: 5.75 ]
Software : Utilities
  • Voice descrambler - This program descrambles band inverted encrypted transmissions, usually found on VHF/UHF. It uses a NCO (numerical controlled oscillator) to re-produce the originally inverted audio band. Use it only if legally permitted in your country. I assume no responsabilities deriving from its use. Standard disclaimer applies
    [ Hits: 13565 | Votes: 38 | Rating: 6.16 ]

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