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509 links - and 2 categories

The 160M No Excuses Homebrew Vertical - This antenna is designed for stations having a difficult time putting a decent signal on 160M from small or CC&R d lots. It is a 24.5 ft. vertical antenna, made from three 10 ft. PVC sections bolted together, and half wavelength of antenna wire helically wound around the PVC sections.
[ Hits: 405 | Votes: 0 | Rating: 0 ]

Dish antenna for 2 meters band - An efficient 2 meter antenna disguised as a TV Satellite dish. This vertically polarized horizontal slot antenna, cut into the reflector of a TV dish, might be the ultimate stealth antenna.
[ Hits: 2002 | Votes: 4 | Rating: 7.25 ]

Helically wound antenna for 40m - A helically wound vertical antenna experiment. 14 meter of wire wounded on a 8 meter fishing pole with 4 elevated radials
[ Hits: 539 | Votes: 2 | Rating: 9 ]

Delta Loop DX Antenna for 40 meters band - A monoband delta loop antenna for the 7 MHz. This vertically polarized DX Antenna is a full wavelength sngle side antenna and has a total length of 42.3 meters (137,1 inch) Can be easily setup with a flag pole or fishing pole as center top mast. For optimal performance lower side should be at 2 meter above the ground. This antenna offers a low radiation angle and 1 DB Gain.
[ Hits: 433 | Votes: 3 | Rating: 6.33 ]

Six Meter Quad Turnstile Antenna - Simple 6 Metre DX Antenna based on an article by LB Cebick in QST May 2002 on a Quad Turnstile antenna. This antenna is basically two full wave loops mounted at right angles fed 90 degrees out of phase to produce an omni-directional horizontally polarized pattern
[ Hits: 702 | Votes: 2 | Rating: 9.5 ]

Portable Vertical Antenna - A home made portable vertical antenna, that with a single 1/4 wave counterpoise wire is possible to achieve less than 1.5:1 SWR on 40, 30, and 20 meter bands. It is basically a center load, shortened ground plain vertical antenna.
[ Hits: 362 | Votes: 0 | Rating: 0 ]

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: 289 | Votes: 0 | Rating: 0 ]

Dual Band VHF UHF Yagi Antenna projects - On this page are designs for Dual Band 2M / 70cm antennas. All antennas are 50 ohm designed driver. These Yagis have a unique element called a Open Sleeve. 4 Element 5 element and 9 element Dual Band - 2M / 70cm antenna projects
[ Hits: 753 | Votes: 4 | Rating: 5.75 ]

Table of Call Signs - ITU - The official table of international Call Sign series published at the ITU Website
[ Hits: 265 | Votes: 2 | Rating: 3 ]

PA6FR - Special callsign PA6FR during Dutch PACC contest
[ Hits: 157 | Votes: 1 | Rating: 10 ]

HA8TKS DXCluster azimuthal map - DXCluster spots rendered on a Real-Time Azimuthmal Map centered on a custom callsign
[ Hits: 408 | Votes: 4 | Rating: 10 ]
HA8TKS RBN azimuthal map - Reverse Beacon Network (RBN) remdered in a Real-Time Azimuthmal Map centered on a custom call sign
[ Hits: 260 | Votes: 2 | Rating: 10 ]

Decatur County Amateur Radio Club - Decatur County Amateur Radio Club, callsign KW4DC, was formed in 2009 by a group of amateur radio operators who wanted to promote and enjoy the amateur radio hobby together.
[ Hits: 135 | Votes: 1 | Rating: 10 ]

DX Pedition Audio Recordings - A collection of audio recordings of some DX Peditions used as case studies to evaluate dxspedition operatios behaviour and calling stations. These audio files are excerpts from real pileups recorded directly off the air in MP3 format
[ Hits: 173 | Votes: 0 | Rating: 0 ]

CW (morse) practice audio - Here are a few links to CW practice audio files at various speeds. Includes words and group of call-signs
[ Hits: 1261 | Votes: 24 | Rating: 4.37 ]

AutoEZ - Automated use of EZNEC. AutoEZ is an Excel application that works in conjunction with the EZNEC antenna modeling programs and allows you to use variables to control diverse aspects of the model. You can then run multiple EZNEC test cases while AutoEZ automatically changes one or more variables between runs. Commercial version and free demo available for download.
[ Hits: 515 | Votes: 1 | Rating: 7 ]

Coil Inductance and Q Calculator - Calculates inductance and Q for single-layer coils made of solid or Litz wire. Uses U.S. or metric dimensions. Can automatically maximize Q. Includes accuracy data. Runs in Windows.
[ Hits: 256 | Votes: 0 | Rating: 0 ]

Radioberry by PA3GSB - Radioberry Radio hat for raspberry pi. HF (0-30 MHz) The latest development of PA3GSB is a radio card plugged into a raspberry pi (2 or 3) , a so called rpi-hat, forming an amateur radio.
[ Hits: 1248 | Votes: 4 | Rating: 9 ]

A Simple Radio Receiver - A very simple experimental short wave radio receiver. This is basically just a crystal radio with two stages of transistor amplification afterwards made with scrap components.
[ Hits: 346 | Votes: 2 | Rating: 9 ]

Cross Band Repeaters - Crossband Repeating is a process where a Ham transmits one signal on one band (typically UHF), and it is received by another radio with a better antenna/power installation, and re-transmitted (typically on VHF) to another radio system, or a repeater. Everyday examples of cross-band repeaters are repeater receive sites that hear the input signals on 2m and retransmit those signals on a frequency higher than 220 MHz.
[ Hits: 207 | Votes: 0 | Rating: 0 ]