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608 links - and 1 categories

RF Transmission Line Loss Calculator - This calculator computes the matched line loss for a transmission line using a model calibrated from data for the transmission line types built in to the calculator. It also gives an estimate of the mismatched loss if the mismatch is specified.
[ Hits: 2508 | Votes: 18 | Rating: 3.94 ]

Rolling your own balanced feed lines - An article by VE1VQ that illustrate how to home made a balanced feed line
[ Hits: 1882 | Votes: 1 | Rating: 10 ]

QRP Lowfer Antenna - Operate 160 and 80 meters in portable with this small antenna by K0EMT
[ Hits: 1517 | Votes: 3 | Rating: 4 ]

Antenna Gain to ERP - A radio's transmitting power can be concentrated along the horizon by use of a GAIN antenna. Although you may still be transmitting with four watts of power, your effective radiated powerwill be greatly increased. This table shows the effects of antenna gain on a transmitter with 4 watts of transmit power.
[ Hits: 1386 | Votes: 4 | Rating: 4.5 ]

Orginal multiband antenna - A project of a vertical and wires that generate a multiband antenna for 28 14 10 and 7 Mhz in french
[ Hits: 1876 | Votes: 0 | Rating: 0 ]

OH3SHF Microwave Beacons - OH3TR operates the OH3SHF microwave beacons on 2.3, 3.4, 5.7, 10 and 24 GHz
[ Hits: 372 | Votes: 1 | Rating: 10 ]

W3VD Beacons - Operate 28 50 144 432 1200 Mhz beacons
[ Hits: 1242 | Votes: 1 | Rating: 6 ]

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 ]

The Las Vegas Radio Amateur Club - The Las Vegas Radio Amateur Club operates the K7UGE repeaters on 146.94 and and 448.500. Repeater is located on top of the Las Vegas Hilton Hotel & Casino, the UHF repeater is located on top of the Tropicana Hotel & Casino.
[ Hits: 503 | Votes: 1 | Rating: 10 ]

Luksa Industries - Luksa industries design and manufacture mechanically operated aluminum telescoping masts and telescoping tripods to support communications and military antennas
[ Hits: 1465 | Votes: 1 | Rating: 1 ]

DERF electronics corporation - Distributor of electronic components like diodes Transistors Microcontrollers Microprocessors connectors, switches, relays, integrated circuits, eproms, leds
[ Hits: 572 | Votes: 2 | Rating: 10 ]

TEL-Atomic Incorporated - Tel-atomic sells physics educational apparatus, oscilloscopes, counters, magnetic meters
[ Hits: 420 | Votes: 0 | Rating: 0 ]

LCLAYOUT drawing software - Simple inexpensive program that allows L-C filters designed by PCFILT or S/FILSYN which are to be built using air wound inductors and single layer capacitors cut from alumina or duroid substrate materials
[ Hits: 2042 | Votes: 5 | Rating: 4.6 ]

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 ]

Test Tone Generator - This Test Tone Generator (TTG) turns your PC into a function generator and enables you to demonstrate, test and tune sound systems, create sound effects and a whole range of other uses to suit your needs. It can also be used for educational purposes.
[ Hits: 14751 | Votes: 32 | Rating: 5.5 ]

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.
[ Hits: 11316 | Votes: 9 | Rating: 7.77 ]

Power Aamps RF voltages - This test circuit is easy to duplicate, and demonstrates the extreme voltages that appear in an amplifier when the load is improper for the amount of drive power applied.
[ Hits: 773 | Votes: 1 | Rating: 10 ]

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
[ Hits: 3792 | Votes: 12 | Rating: 7.75 ]

Roger Beep - This article describes a simple device to generate Roger Beep tones.
[ Hits: 1634 | Votes: 5 | Rating: 6.6 ]

Sound Card Interface by VK6YSF - Presented here is a transceiver to computer sound card interface complete with automated transmit key function. A sound card interface is simply the audio coupling of a computer soundcard and a transceiver to allow various computer applications that send and receive SSTV, RTTY, PSK31 and other similar modes based on soundcard generated signals.
[ Hits: 3188 | Votes: 2 | Rating: 8.5 ]