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507 links - and 2 categories

Antennas : 40M : 40 meter Yagi Antennas Antennas : 80M
  • Umbrella Antenna for 80 Meters - An umbrella antenna is basically just a vertical monopole antenna that is top-loaded with a large end-hat. The hat consists of a number of radial wires that slope away, downward from the top of the antenna.
    [ Hits: 925 | Votes: 0 | Rating: 0 ]
Antennas : Dipole
  • Bent Dipoles reference website - Antenna modeling discussions about What happens if... a dipole is bent horizontally, laterally, vertically. Zig-zag, meander, catenary curve. Effect of sag, elevation, radials. OCF off-center feed, harmonics. Includes 4NEC2 antenna models for each study.
    [ Hits: 707 | Votes: 0 | Rating: 0 ]
Antennas : J-Pole
  • Improving the Super-J - The collinear J-Pole, often known as the Super-J, does improve the behavior over a regular J-Pole. As many attest, there is an advantage when vertically combining 1/2 radiating sections to have a bit of separation between the half-wave end points. The Super-J has very little separation between the two half-wave radiators.
    [ Hits: 971 | Votes: 2 | Rating: 5.5 ]
Antennas : Lindenblad
  • Lindenblad Antenna Project - An homebrew Lindenblad antenna designed specifically for LEOs reception.
    [ Hits: 973 | Votes: 0 | Rating: 0 ]
Antennas : VHF UHF
  • 5 Element 2M / 70cm Yagi - On this page is the design for Dual Band 2M / 70cm antenna with 3.2mm elements. The antenna has a 50 ohm designed driver. This Yagi has a unique element called a Open Sleeve
    [ Hits: 1689 | Votes: 10 | Rating: 5.5 ]
DX Resources : Ham Radio Awards
  • Awards DX Cluster - ADXcluster is a DX Spot cluster that checks callsigns for compliance with conditions of desired amateur radio awards.
    [ Hits: 514 | Votes: 2 | Rating: 10 ]
Ham Radio : Blogs : USA
  • KK6ZLX - A new ham finding his way in the hobby
    [ Hits: 309 | Votes: 0 | Rating: 0 ]
Ham Radio : Clubs : North America : USA : Utah
  • W7SP Utah Amateur Radio Club - Our club is the oldest and largest amateur radio club in the state of Utah. It holds the call W7SP, a memorial call for Leonard (Zim) Zimmerman, early UARC member and radio pioneer
    [ Hits: 197 | Votes: 0 | Rating: 0 ]
Manufacturers : Morse Key
  • K7SU CW Straight Key - Custom made straight key with your call. Proudly made in the USA. Made of beautiful wood and polished brass.
    [ Hits: 365 | Votes: 2 | Rating: 10 ]
Radio Equipment : HF Transceivers : Yaesu FT-857
  • Yaesu FT-857 CAT Controller - Free windows basic and simple CAT program specifically for the Yaesu FT-857 radio. It provides an unlimited memory storage area which resides on the client side.
    [ Hits: 2364 | Votes: 8 | Rating: 8 ]
Software : Databases
  • FCC Call Lookup - This software is an amateur radio utility for the lookup of an FCC issued Amateur Radio Call Sign. Run on Windows Linux and MacOSX
    [ Hits: 358 | Votes: 0 | Rating: 0 ]
Software : Logging
  • Call Book Log 3 - A ham radio logging solution. Built on mysql/maria db and php, it allows you to host a log on a web server and have easy access to viewing editing deleting backing up and restoring the log. Allows everyone to view the log and a central admisitrative section which when logged into allows you to add and edit and remove entries. It features an easy to setup page, run the setup page and enter the required values and your set to start logging. It is primarily mobile friendly, easy on bandwidth and should work well in any browser. If entering a contact that you have worked before it will show the last 5 dates and times of that station.
    [ Hits: 858 | Votes: 3 | Rating: 10 ]
Software : NBEMS
  • flmsg - Fast Light Message - FLMSG is a simple forms management editor for the amateur radio supported standard message formats. Form data can be transferred between computers either using standard internet email or via radio frequency broadcasts typically made by an amateur radio operator on your behalf.
    [ Hits: 659 | Votes: 1 | Rating: 9 ]
Software : Signal Generator
  • 16 DTMF Tone Generator Keypad App - This app will give you a 16 tone DTMF keypad and the ability to generate custom DTMF sequences, and set the duration and tone to silence ratio. Includes the characters 1234567890*# and the menu tones ABCD. You may enter a custom sequence via the keypad, soft keyboard, or speech if your device already has speech-to-text capability. This is basically a touch tone telephone keypad, which may be of interest to amateur ham radio repeater operators
    [ Hits: 725 | Votes: 4 | Rating: 7.75 ]
Software : iPhone
  • My LoTW - My LoTW is a free viewer app for Logbook of the World by ARRL. Features include, View all the QSOs you have submitted to LoTW, Add multiple callsigns under your LoTW account, View all your QSLs, Share digital QSL image which is created by the app for QSLs. Either save it on your device or share it on facebook, View statistics for your worked stations/DXCC/bands etc
    [ Hits: 348 | Votes: 2 | Rating: 6 ]
Technical Reference : Arduino
  • AutoCap Tuner for mag loop Antennas - This article describes a loop tuning system that automatically keeps a contest-band loops properly adjusted as operator hop around each band, made with Arduino
    [ Hits: 894 | Votes: 2 | Rating: 6 ]
Technical Reference : Electronics
  • A Brief Treatise on the Decibel - An article on origin and usage of the Decibel, that has always been a logarithmically based representation of a power ratio
    [ Hits: 279 | Votes: 0 | Rating: 0 ]
Technical Reference : Radio Frequency Interference
  • Ham Radio TVI in the 21st Century - Ham radio transmissions can interfere with television reception. This is called television interference, or ham radio TVI. Consumer adoption of cable television has significantly reduced ham radio TVI. But the introduction of IPTV, or television over phone systems, has brought ham radio TVI back, often with a vengeance. Here's why
    [ Hits: 322 | Votes: 0 | Rating: 0 ]
Technical Reference : Raspberry Pi
  • ClubPi - Raspberry Pi to Clublog bridge that consumes broadcasted QSOs from N1MM, transforms the QSOs into ClubLog ADIF format and sends those QSOs in batch or real-time to ClubLog automatically
    [ Hits: 421 | Votes: 0 | Rating: 0 ]

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