high

560 links - and 3 categories

W5JGV Mobile Antenna - A High Efficiency Extended Length Mobile Antenna The antenna itself is 3.42 meters or 11 feet 2 inches long from the top of the mounting spring to the tip.
[ Hits: 4123 | Votes: 5 | Rating: 6.2 ]

Another vertical antenna for 30, 40 and 80 meters - This article is to describe a multi band DX-dedicated antenna offering a minimum of compromises (such as lossy traps), for the hams not having any high-support
[ Hits: 4377 | Votes: 4 | Rating: 3.5 ]

Falling Derrick Method of Tilting Up a Tower ^updated - A homemade 16 foot falling derrick to tilt up a 50 foot high, 18 inch wide Glen Martin aluminum tower by N6RK
[ Hits: 5834 | Votes: 11 | Rating: 4.36 ]

WA8YWO - High Frequency Expermental Beacon "WV". The Beacon operates on the frequency of 13.55567mhz. This Beacon is very low power. It operates under Part 15 of the FCC Rules and Regulations. It transmits with only 1.5 milliwatts of power
[ Hits: 410 | Votes: 0 | Rating: 0 ]

Eoltec Wind Turbines - High efficiency, Best Wind Technology for Highest Performances
[ Hits: 415 | Votes: 1 | Rating: 10 ]

Tabor Electronics - Tabor electronics produces high-end function generator, universal counters/timers, synthesizers, pulse, function and arbitrary waveform. Frequency counters
[ Hits: 422 | Votes: 0 | Rating: 0 ]

Gage Applied Technologies - Gage applied technologies designs and manufactures high-speed data acquisition systems, high-speed digitizers in pci / cpci / pxi or pc oscilloscopes, providing utmost measurement fidelity for high frequency signals.
[ Hits: 550 | Votes: 0 | Rating: 0 ]

Signal Forge - The signal forge 1000 signal generator is a portable, high-performance digital and rf signal source with a 1 ghz frequency range. features include digital, differential and ac coupled outputs
[ Hits: 638 | Votes: 0 | Rating: 0 ]

Arizona Near Space Research - Arizona near space research - promoting science and education by exploring frontiers in amateur radio and high altitude balloons.
[ Hits: 627 | Votes: 0 | Rating: 0 ]
AMSAT & High Altitude Balloons - Balloon Projects, scheduled launches at amsat
[ Hits: 534 | Votes: 1 | Rating: 9 ]
Suntracker: Wayne State University - Suntracker : high altitude, balloons, weather station, stratosphere, solar cells
[ Hits: 369 | Votes: 0 | Rating: 0 ]
Treasure Valley Near Space Program - Lighter, cheaper, higher. let's do launch!
[ Hits: 406 | Votes: 1 | Rating: 10 ]

New England Historical Radio Society - The New England Historical Radio Society Inc. is an organization dedicated to the preservation of commercial Morse Radiotelegraphy on medium and high frequency.
[ Hits: 531 | Votes: 0 | Rating: 0 ]

Nuhertz Technologies - Leading supplier of low and high frequency electronic filter design products for the design of wireless telecommunications equipment, semiconductors and more
[ Hits: 1719 | Votes: 3 | Rating: 7.67 ]
FilterCAD - A free computer aided design program to help users without special expertise in filter design to create filters using Linear Technology's monolithic filter ICs. With FilterCAD, you can design lowpass, highpass, bandpass and notch filters
[ Hits: 11767 | Votes: 28 | Rating: 5.03 ]
AADE Filter Design ^updated - Dowwnload this free windows programs to design Butterworth, Chebyshev, Elliptic (Caur), Bessel, Legendre and Linear Phase low-pass, high-pass, band-Pass, and band-reject filters. Coupled Resonator band-pass filters
[ Hits: 24849 | Votes: 114 | Rating: 7.17 ]

RufzXP - RufzXP is an excellent free training software for improving code speed and CW practice, particularly (ultra) high speed memory copying of true amateur radio calls.
[ Hits: 11750 | Votes: 33 | Rating: 6.53 ]

Building High Power Amplifiers - SM5BSZ article on building VHF RF amplifiers
[ Hits: 1504 | Votes: 1 | Rating: 10 ]

Batteries and QRP - Thanks to the popularity of cell phones, laptops and other personal electronic devices, the battery industry has been market-driven to produce higher capacity batteries in lighter weights than previously possible with yesterday's chemistries.As a result, a wide variety of battery types are available to the outdoor QRP operator.
[ Hits: 505 | Votes: 0 | Rating: 0 ]

5th order High Pass VHF Filter - Sometimes many VHF-UHF modern transceivers have problems with BROADCAST Interference and CROSS-modulation from FM commercial broadcast stations this article shows a simple Batteworth HI-Pass VHF Filter to reduce this problem
[ Hits: 1209 | Votes: 8 | Rating: 6.12 ]