class a ab

class a ab

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• Wire Antenna Design Lengths - The Classic Numbers for All Types of Wire Antennas at HF. Wire antennas need to be made a bit long and cut to resonance. They are affected by height above the ground and surrounding objects. In order to get an idea of the right place to start, certain formulas are generally accepted.
  [ Hits: 330 | Votes: 1 | Rating: 7 ]

• Revisiting the Rybakov 806 Vertical Antenna - An article about the Rybakov 806 Vertical antenna. The classic Rybakov configuration is a 7.6m or 8m ( aprox 25 or 26 feet) wire fed through a 4:1 UNUN
  [ Hits: 456 | Votes: 4 | Rating: 5.75 ]

• Charlie's CQ Room - Ham radio site devoted to classic collectible amateur and military radios, featuring vintage ham radio color photos and commentary, free downloadable manuals and pamphlets and links for ham radio hobbyists.
  [ Hits: 1059 | Votes: 1 | Rating: 10 ]

• TubeRadioDoc - Vintage Tube Radio's from Germany for sale. High class restorations for all valve radios offered. Radio Brands like Saba, NordMende, Majestic, Grundig, Zenith, Philco and more. TubeRadioDoc Vintage Audio Store
  [ Hits: 491 | Votes: 2 | Rating: 9 ]

• Shortest Vanity Callsigns - This is a service for finding the shortest available vanity callsign in your amateur radio class. It filter through all possible callsigns and provide just the unused ones weighted by their length in morse code or their actual number of letters.
  [ Hits: 2991 | Votes: 63 | Rating: 7.37 ]

• F8KFP Radio Club Urtois - Le radio club de la Cote Basque, amateur radio pages about HF / VHF / UHF / digital modes, Projets with arduino and raspberry , training classes.
  [ Hits: 299 | Votes: 0 | Rating: 0 ]

• Oregon Tualatin Valley Amateur Radio Club - Special services club offering monthly meetings, training classes and general advancement of ham radio in the Northwest.
  [ Hits: 1084 | Votes: 2 | Rating: 5.5 ]

• Australian Amateur Radio - Australia's largest online database of VK email & URL's. Home of the AAR Netring and VK Classifieds. Repeater lists, maps and more...
  [ Hits: 2092 | Votes: 45 | Rating: 8.52 ]

• Morse code practice - A comprehensive morse code auduio guide with several youtube movies classified by skill level, characters and numbers, sentences, speed level and more. All movies are linked by an interactive interface that let you select the speed and the excercise type. The page contains an downloadable set of morse code exercises and several other resources
  [ Hits: 134 | Votes: 0 | Rating: 0 ]

• Display Transplant into an Icom IC-756 - This article is about replacing the LCD display in a Icom IC-756 classic. The displays in these radios have not been supported by Icom in several years.
  [ Hits: 236 | Votes: 1 | Rating: 10 ]

• TS-590S - QST reviews comments - Kenwood TS-590S QST review comments and table comparison vs Elecraft K3
  [ Hits: 628 | Votes: 0 | Rating: 0 ]

• FT-1000D Why DX in Stereo - Yaesu's classic, top of the line HF transceiver for contesters and DXers is probably the only ham dual-receiver radio that does true diversity reception
  [ Hits: 1170 | Votes: 2 | Rating: 5.5 ]

• N1MM Logger+ - N1MM Logger+ is one of the most popular contest logging programs for Windows and it is the evolution of the N1MM classic. N1MM Logger plus is fully free to download and to use software featuring automatic CW generation, rotator and radio control, suport for So2R, cluster support, winkeyer interface, import export cabrillo and adif formats and many more features. Download N1MM from the official web site with latest callsign files and updated.
  [ Hits: 14211 | Votes: 12 | Rating: 7.37 ]

• Class C Amplifier Matching - QST Article on what you should know about matching networks for class C RF power amplifiers
  [ Hits: 936 | Votes: 1 | Rating: 6 ]

• 600 Watt HF Amplifier  ^pop - Schematics plans by K9GDT and all infos to build a 600 Watt HF Amplifier. The amplifier uses four Motorola MRF150 50 volt TMOS power FETs configured in push-pull/parallel and biased for class AB linear operation.
  [ Hits: 70395 | Votes: 127 | Rating: 4.45 ]
• Stone Creek Special 600 HF RF Amplifier - This is a Solid State Amplifier Project. It uses 4 MRF150 MosFet Power Transistors. The Power Supply Voltage is 50 VDC at 21.5 Amp. The max power available is 1,075 Watts. The Efficiency is about 65% +/- and runs Class AB Solid State.
  [ Hits: 270 | Votes: 0 | Rating: 0 ]

• Measuring Zs in solid-state amplifier - Measuring the output impedance (Zs) of solid-state broadband HF amplifiers operating in class AB eham article by ZS6BIM
  [ Hits: 488 | Votes: 0 | Rating: 0 ]

• SLA Battery Charger - A simple charger designed for charging 12 V sealed lead acid batteries, used by radio amateurs for portable operation Amp-Hr Class used by radio amateurs for portable/emergency operation.
  [ Hits: 709 | Votes: 1 | Rating: 1 ]

• A Simple VFO for 80 and 160 Meters - This VFO is simple to build and is quite stable.
  [ Hits: 1479 | Votes: 1 | Rating: 7 ]

• How to solder - This guide focuses on soldering for the beginner and explains how you can solder a variety of components using a few different techniques - from the classy to the downright caveman.
  [ Hits: 400 | Votes: 0 | Rating: 0 ]

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