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Antennas : 15M- Monster Quads
- N6LF tells us about his monster two-element 40-meter quad, with bonus three elements on 20 and 15
meters.
[ Hits: 6373 | Votes: 0 | Rating: 0 ]
- Low cost 1:1 balun
- A balun don't depend on use of ferrite beads, but use steel wool to attenuate any RF on the outer braid
[ Hits: 6903 | Votes: 8 | Rating: 4.88 ]
- Homebrew ladder line
- Homebewing ladder line discussion at qrz.com
[ Hits: 2560 | Votes: 1 | Rating: 1 ]
- BiQuad Antenna for 144/440
- This is a vertically polarized Broadside and Collinear Array each Loop is a vertically polarized Broadside Array both the right and the left side of the Loop is a bent 1/2 wave dipole working 180 degrees out of phase with the other one and that gives you 4.15dbi of gain by KE4UYP
[ Hits: 7595 | Votes: 14 | Rating: 4.86 ]
- EZ-Lindenblad Antenna for 2 Meters
- This easy to build antenna works well for satellite or terrestrial communication, horizontal or vertically polarized by Anthony Monteiro, AA2TX QST Article
[ Hits: 7662 | Votes: 12 | Rating: 9.25 ]
- Loop Antenna Basics
- Loop Antenna Basics and Regulatory Compliance for Short-Range Radio
[ Hits: 847 | Votes: 0 | Rating: 0 ]
- ARRLWeb: RadiosOnline
- ARRL members classified ads
[ Hits: 1084 | Votes: 4 | Rating: 6 ]
- US Band Plan by ICOM
- ICOM USA Amateur Radio HF VHF/UHF band plan updated to 2008, include a Common Country prefixes in PDF Format
[ Hits: 3767 | Votes: 9 | Rating: 6 ]
- Radio Operators Association of Dallas
- The Radio Operators Association of Dallas (ROADS) Club exist to promote interest in amateur radio communication and experimentation, fostering of education in electronic communications as it applies to amateur radio, development of individual efficiency, cooperation among members. and furtherance of the public welfare.
[ Hits: 521 | Votes: 2 | Rating: 10 ]
- Coastal ChipWorks
- Amateur Radio Products From John Hansen, W2FS, Kenwood D700 Keyboard Interface, Expandable TNC with an Optional, remote controls for ICOM radios, frequency keypads for yaesu and icom radios
[ Hits: 2958 | Votes: 2 | Rating: 5.5 ]
- PlanePlotter
- PlanePlotter is a windows decoder of live digital position reports from aircraft and plots them on a chart. Using PlanePlotter, you can see a radar-like display of all those aircraft around you that are transmitting the appropriate digital messages including ACARS, ADS-B and HFDL. Full Trial available for 21 days.
[ Hits: 12768 | Votes: 10 | Rating: 6.13 ]
- DL6WU Long boom Yagi design tools
- This is an Excel spreadsheet template to design DL6WU Yagi antennas
[ Hits: 1977 | Votes: 23 | Rating: 7.39 ]
- Ham Fan
- A free small database program for Palm OS that allows you to log ham radio contacts. You can log the call sign, name, date, time and frequency of the contact.
[ Hits: 850 | Votes: 0 | Rating: 0 ]
- The KB6IBB Utilities
- Ham radio frequency list consolidation software.
The Ham Radio database can house a unlimited number of records. Holding frequency information from DC to Daylight. The Radio Scanner Database is designed to emulate a radio scanner. A 5,000 record table is provided and is organized by channel number.
[ Hits: 1057 | Votes: 1 | Rating: 7 ]
- BIP Electronics Lab Oscilloscope
- Freeware windows oscilloscope uses the sound card's input to measure signals. This means that the quality of the scope depends on the quality of your sound card.
The scope automatically uses the highest sample frequency available at the input that you select
[ Hits: 10065 | Votes: 16 | Rating: 5.5 ]
- SweepGen
- SweepGen turns a PC into an Audio Oscillator and Sweep Generator which can be used for testing audio or educational purposes. In conjunction with audio test instruments, you can make frequency response plots. SweepGen uses the sound card in your PC to produce sinewaves
[ Hits: 10583 | Votes: 11 | Rating: 5 ]
- Sine Wave Generator
- Freeware windows Wave Generator use the sound card's output as sine wave output. A built in sweep algorithm is used by audio hackers to measure frequency repsonses of their amplifiers
[ Hits: 20068 | Votes: 100 | Rating: 4.93 ]
- T-Pad / H-Pad Resistance Calculator
- This calculator is designed to give resistor values for unbalanced T-pads, and for balanced H-pads.
[ Hits: 1162 | Votes: 11 | Rating: 4.99 ]
- Homebrew FT 817 Headset
- A simple circuit to homebrew your own headset for the Yaesu FT-817
[ Hits: 3452 | Votes: 2 | Rating: 6 ]
- Automotive Interference Problems
- Installing mobile radios in your new megabucks car can be a frightening proposition - especially if RF from your rig could damage your shiny new roadster
[ Hits: 762 | Votes: 1 | Rating: 1 ]
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