ftir data analysis

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.

Wire Dipole for 7.05 MHz - Inverted Vee antenna for 40m with simulation data by DF9CY

EB5AGV Vintage Radio and Test Equipment - EB5AGV / EC5AAU Boatanchor collection. Useful data on TV-testers, Collins, Drake, Hammarlund, Hallicrafters, National, Heathkit, EF Johnson.

VHF UHF European Beacons - MMMonVHF maintains the data for 6m, 2m, 70cm and 23cm bands in collaboration to LA0BY. This site allow display of a beacon map and latest beacon spots.

Timewave - Sells leading-edge voice and digital communications products to the world-wide military, government, industrial, and amateur radio marketplaces. Bluetooth Remote Audio/PTT, Rig Controller with Audio & PTT , HamLinkUSB Rig Control, Noise filtersm antenna analyzers, Multimode Data Controller, TNC, Packet Radio Terminal Node Controller. USB2RS232

Signatec - Signatec manufactures pc based data acquisition waveform digitizers pci daq boards, digital signal processing pci dsp boards, waveform signal generator pci dac boards, and real time waveform recording products for the signal technology market.

DataQ - PC-based oscilloscopes, data acquisition and data logger products, spectrum analyzers and voltmeters

Google and APRS - N6BG site using google maps api to show APRS data

W8DIG Central Ohio Digital Interconnect Group - Group of dedicated amateur radio enthusiasts who want to further digital modes of communication in the central Ohio area. We have been active in packet, APRS, VOIP and are now proud to provide D-Star digital voice and data connectivity.

Ham Radio Stations heard via ISS - This page documents Amateur Radio data digipeated by the International Space Station

FM Repeater Database - Via this interface you have access to one of the biggest databases on amateur radio voice repeaters.

Repeater and Broadcast Transmitter Database - Searchable database of amateur repeaters and broadcast transmitters. The database covers the fifty U.S. states, the District of Columbia, and the ten Canadian provinces.

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

4ATV.com - Amateur TV transmitters and receivers for ham operators, wireless cameras, ham antennas, 2.4 1.2 900 Mhz systems

USAPhotoMaps - Free Windows APRS Client with capability of downloading free aerial photo and topo map data.

Integrated Engineering Software - Electromagnetic CAE simulation software for modeling and analysis. RF, Microwave & Antennas

AADE Filter32 - ADE Filter Design and analysis is a free for download windows program to design filters

5MhzLog - This logging application has been developed to improve the accuracy of the data being captured for the 5MHz Experiment.

BeamFinder - BeamFinder is a software tool designed to conduct analyses for radio amateurs interested in radio propagation studies. It provides a large 2500 x 1800 pixel screen map of the world which displays calculated results from sophisticated models, dx data and other sources of information

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.

Coaxial Cable's specifications - A table with Loss in DB/100m , Max power in Watts, Diameter in mm , Velocity factor (VF)

Datasheet Archive - Search engine for electronic component datasheets and application notes.

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

OH5IY Antennas Lightning Protection - Thoughts of ham radio station lightning and transient protection, finnish legistlation, rules, standards, principles, examples, data, graphs, formulas and transient protection device schematics.

Astron RS35m Power Supply Schematic - Astron RS35m Power Supply Schematic annotated with Notes from QST Hands-On Radio, "Experiment #35—Power Supply Analysis" PDF File