ara 2000

OH2FFY - Car Antenna Priority listing - Low cost build up of a 20 meter vertical for stationary mobile use that performs exceptionally well.

The Coaxial Line - Impedance matching, Transmission Lines, Characteristic Impedance, VSWR & Mismatch and Antenna Losses

[TowerTalk] Coax Vs Open Wire Line - Discussion at towertalk about coax cable feed lines vs Open Wire Lines

The Thick Loop - The performance of a small magnetic loop can be improved constructing it larger, thicker or both. The antenna is covering from 12 Megahertz to 32 megahertz and adding a 156 Pico farads ceramic capacitor it resonates on the 40 meters band. by PY1AHD

Antenna Measurements - The electrical characteristics of an antenna that are of interest to obtain by direct measurement are the frequency at which the antenna is tuned, the gain and radiation pattern

Radiation Characteristics - Tailoring Patterns for HF Verticals

Azimuth Radiation Patterns - Below VHF the change in the radiation characteristics of an antenna will change considerably from frequency to frequency, making antenna selection more complicated.

CARA The Cochise Amateur Radio Association

W7GDY TriCity Amatuer Radio Association - Emergency communication is the cornerstone of this organization with the development of operating teams to provide volunteer backup emergency communications support to the cities of Goodyear, Avondale, Litchfield Park and surrounding areas

VVARA - Verde Valley Amateur Radio Association - Group of Amateur Radio operators, generally from the Yavapai County area in Arizona, who share common interests, goals, and aspirations.

K7LHC London Bridge Amateur Radio Club - Lake Havasu City Arizona USA

KC8VTO Barry Amateur Radio Association - BARA is an ARRL affiliated club in Barry County, Michigan, which is located in the southwestern part of the Lower Peninsula.

N8AHZ Amateur Radio Association of Hanson Hills - ARRL affiliated since 1992

TCARA - TCARA has been active in Michigan's Tuscola County for over 20 years.

W8CDZ Copper Country Radio Amateur Association, Inc. - Serving the Copper Country in Michigan's Western Upper Peninsula. Copper Country communities include Calumet, Copper Harbor, Lake Linden, Houghton, Ontonagon, Baraga, and other nearby towns.

The Mountain Repeater Association - Formed about 30 years ago, in an effort to promote the growth of 220 MHz operation, further the readiness of the Amateur Radio Community to provide disaster emergency communications, and to promote experimentation with VHF communications.

Kamiak Butte Amateur Repeater Association

Kenwood TS-2000 LED Backlight Conversion - If the display lamps in your TS-2000 go out. They can be replaced with LEDs.

Frequenzdatenbank.de - Frequency database for Germany. Emergency services, aircrafts, radio and paging system with over 2000 frequencies from all over Germany.

iQSL USA - QSL card printer from Niagara Falls, NY

Resistor Finder - Resistor Finder is a program that allows the electronics designer or hobbyist to find a combination of 2 resistors that, when connected in parallel, will provide the best match to a desired resistance.

Spectrum Analyzer Real-time FFT - Eight-channel Audio Spectrum Analyzer is a set of Real-Time Multi-Channel Gauges for investigation of data accepted from any ADC you will want or 16-, 24- and 32-bit ADC of sound card. WDM drivers support. FFT Spectrum Analysis, OscilloScope, Frequency counter, AC/DC voltmeter, Signal-to-Noise Ratio, Signal-to-Noise and Distortion, Spurious-Free Dynamic Range, Effective Number Of Bits, Total Harmonic Distortion, Inter-Modulation Distortion, Phase Shift. Special modes of dual-channel FFT spectral analysis: Separate channels spectra, Spectra of digital sum, difference, product of two signals, Spectrum of digital product of original signal and its fundamental, Spectrum of Real and Complex Transfer Function, Cross Spectrum. Standart weighing of spectra according IEC and CCIR. Oscilloscope modes (for dual-channel ADC) are: original signals, sum, difference, dependence of one channel on another, amplitude distribution of input signals.

Enable Low Cost RF Power Amplifiers - A new paradigm for low cost, reliable RF amplifier ‘pallets’ has been enabled by new circuit design, manufacturing and thermal management techniques

Diplexer 2m 70cm - This DIPLEXER separates 2m from 70cm on the same coax cable, and allows to use 2 antennas over the same cable and permits transmission on one band and simultaneous receiption on the other band by hb9abx

Lightning Protection for the Amateur Radio Station - Article on lightning protection for the ham radio station, Lightning Characteristics, Identify What is to be Protected, Establishing a Good Ground, Coax Cable Grounding, Operating Safety by wrblock.