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40m broadband vertical antenna - A loopy loop loaded vertical antenna operating range 7.0 to 7.3 MHz by S. C. Chuck Smith, WA7RAI
[ Hits: 6569 | Votes: 15 | Rating: 7.52 ]

The Galaxy dipole - A very short dipole with a good radiation efficiently plus a respectable bandwidth by S. C. Chuck Smith, WA7RAI
[ Hits: 1871 | Votes: 3 | Rating: 10 ]

A Collection of Smith Chart Resources - The Smith Chart was originally created many years ago as an RF engineering aid by Phillip Smith of RCA.These pages includes extesnive documentation on smith carts.
[ Hits: 1496 | Votes: 4 | Rating: 2.5 ]
Speedometers SWR Meters and Smith Charts - Have wondered why a Smith chart has such strange grid lines. Believe it or not, there is a logical progression from Speedometers to Smith charts that will make the Smith grid crystal clear.
[ Hits: 479 | Votes: 1 | Rating: 5 ]

Two Element Phased Verticals - Two 40 meter phased vertical antennas, project, pictures and description by W4NFR
[ Hits: 1156 | Votes: 2 | Rating: 6 ]
Quarter Wave 80 m vertical Antenna - Homebrew a 1/4 wave 80 meter vertical using aluminium tubing
[ Hits: 2437 | Votes: 6 | Rating: 7 ]

Smithe Windom Six Band HF Windom antenna ^pop - HF Windom antenna, cover 80, 40, 20 15, and 10 meters, antenna design
[ Hits: 26263 | Votes: 21 | Rating: 7.1 ]

Hanging Judge Hamfest - Hanging Judge Hamfest, Fort Smith, AR Fort Smith Area Amateur Radio Club
[ Hits: 409 | Votes: 1 | Rating: 9 ]

G7IZU Radio Reflection Detection Page - Meteor Shower, Aurora, Sporadic-E and Solar Flares detected using Radio Signal Reflection, by Andy Smith, G7IZU. Live waterfall displays from three receivers, live Es propagation maps.
[ Hits: 808 | Votes: 6 | Rating: 8.33 ]

Batteries and gadgets - Your source for weather radios, communication headsets, 14 channel radios, M&M groovy radios, smithsonian crystal radio and weather station kits, line restrictors, antennas,ham radio accessories, and battery products.
[ Hits: 1403 | Votes: 2 | Rating: 5.5 ]

Smith chart - Match & display imped of antennas, can graphically visualize and compare two sets of measured impedances simultaneously.
[ Hits: 3588 | Votes: 9 | Rating: 4.12 ]
Smith Chart Software - SimSmith is a highly interactive, real time Smith chart graphing program. Circuits are constructed using drag-n-drop. Load files can be imported from the EZNEC and CocoaNEC antenna simulation software and from the AIM4170 and miniVNApro antenna analyzers. Circuits and load files can be of any size. Key Features: SimSmith is one of the few Smith chart packages which models transmission line losses. SimSmith also allows the description of circuit elements using algebraic equations. SimSmith has only one screen and allows the screen to be resized to increase workspace or readability.
[ Hits: 1574 | Votes: 6 | Rating: 6.5 ]

Smith chart calculator - linSmith is a Smith Charting program, mainly designed for educational use. It allows defining multiple load impedances (different frequencies), and adding components (discrete components and line sections) in series and parallel. It plots the impedances on the screen, shows the values in table format, and is able to generate publication quality Postscript output.
[ Hits: 4123 | Votes: 28 | Rating: 3.92 ]
linSmith - Smith chart utlity - A Smith charting program. You can enter either discrete components or transmission lines, see the results on screen and/or generate Postscript output. Component values can be changed numerically or using scrollbars.
[ Hits: 1369 | Votes: 1 | Rating: 10 ]
linsmith - A Linux Smith charting program. You can enter either discrete components or transmission lines, see the results on screen and/or generate Postscript output. Component values can be changed numerically or using scrollbar
[ Hits: 561 | Votes: 0 | Rating: 0 ]

RevLoad - This graphics-intensive program reveals the load on the output of a matching-network, based on measurements of the components in that network. Adjust the network (tuner) for a flat input, measure or look up the network component values and you will immmediately see the R and jX values of the load on the network, presented as both a schematic with the component values and as a Smith Chart normalized to the specified system impedance.
[ Hits: 698 | Votes: 1 | Rating: 10 ]

4-1000A Tube RF Amplifier - Home Brew a 4-1000A RF power amplifier project by W4NFR
[ Hits: 685 | Votes: 0 | Rating: 0 ]
GS-35B Tube Amp - 160-10 Meters 1500 Watt Amp - W4NFR
[ Hits: 577 | Votes: 2 | Rating: 9.5 ]
3-500Z Amplifier Project - This article loaded with nice pictures and schematics, describes a 160-10 meter linear amplifier that uses a pair of 3-500Z triode power tubes. It was designed and constructed by William Moneysmith, W4NFR. The amplifier features fast warm up and 1500-Watt RF output with 100-Watts of drive.
[ Hits: 1082 | Votes: 4 | Rating: 9.5 ]