audio oscillator kit

Balloon Antennas - Launching a balloon or kite supported tall vertical or protracted inverted L.

Rodeo City Radio Club - Ellensburg, Kittitas County, Washington, USA

KC7Z North Kitsap Amateur Radio Club - Promoting Amateur Radio in Kitsap County Washington

WR7UKC Upper Kittitas County Amateur Radio Club - First started in the early 80's by a small group of Hams that resided in Cle Elum, Washington.

N7IG South Kitsap ARC - ARRL affilitated club and a Washington Sate nonprofit corporation.

San RomanoFire Dep. Live Radio - San Romano Valley, California, Fire department live audio stream

Hamnet - Listen to the SARL Hamnet weekly audio report transmitted on Amateur Radio Mirror International Sundays at 10 CAT Sunday

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

MFJ Enterprises  ^pop - MFJ manufacturer of ham radio antenna products, antenna tuners, antenna analyzers, morse code & CW, SWR wattmeters, antenna accessories , power supplies, audio filters, TVI filters, baluns, coax switches and more

HexKit.com Hex Beam Base Plates - Fabricates baseplate components, and provides hardware kits for DIY hex beam antennas.

Filtronetics Inc - Maker of filters, oscillators, cristals Coils, Toroidal Inductions, Solenoids, Bifilar wound Solenoids, Trifilar Solenoids and Transformers Located in Kansas City, Missouri

FMI - FMI provides superior solutions in the design and manufacture of frequency control devices including Voltage Controlled Temperature Compensated Crystal Oscillators (VCTCXO), voltage controlled crystal oscillator (VCXO), Temperature Compensated Crystal Oscillators (TCXO), crystal clock oscillators, high temperature oscillators, surface mount and crystal oscillator products, phase locked sources and more.

Bomar Crystal Company - quality Quartz Crystals, Clock Oscillators, VCXO's and TCXO's

KD1JV Designs - QRP Kits and Projects for the low power Amateur Radio enthusiast

Shell Engineering : E-Z-TY - Ezty rope clamp manufacturer making your rope and anchor line tasks simpler. Custom made products for all your boating needs. ropes lines, rope clamps, dock lines, end tips, sleeves, sliding locks, clamps, hooks, plastic hooks, tie down kits

Technology Systems - Supplier of Heathkit documents, full high quality manuals fom NEW manuals, full catalogs all pdf format. Schematics and 1000 pictures

2 kW HF Amplifier Rebuild - Heathkit SB-220 amplifier repaired at W8UM

Herbach & Rademan - Pioneer supplier in the radio parts field, and electronic components, alternative power products, kits, test equipment and computer components.

RF Stuff - Online shop for two way radio communications and amateur radio products, antennas, coax and cables, adapters and mounts, accessories and audio parts

Hifissb.com - Heathkit Icom Kenwood Power Transistors Ten Tec Yaesu spare Hamradio parts.

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.

Legendary microphones for ham radio - Graph of the frequency response of some of the legendary microphones favoured by radio hams

Bluetooth Audio and Amateur Radio - Bluetooth headsets are very common with cell phone users. As such, many amateurs may already own a Bluetooth (BT) headset. So why not use it with amateur radio?

Tools and Links for RF Power Amplifier Builders - This document lists a few tools, documents and websites which are valuable in the design and construction of amateur RF power amplifiers. The list is small but it represents a good starting point for the amateur amplifier builder.

SoftRock SDR Interest Group - 5000+ member discussion group for the low-cost series of SoftRock SDR receiver and transceiver kits.