audio fft analysis

160-meters antenna problems and solutions - Bill Orr W6SAI ham radio techniques. Improving ground connection, computer analysis of the antenna, modelling sample antennas pdf file

80m Loop EZNEC Analysis - Antenna data, and design note for this horizontal loop antenna resonating on 80 Meters by K0ZE

Where Does the Power Go - An Energy Analysis at an Impedance Discontinuity in an RF Transmission Line

Conductors for HF Antennas - Putting up an antenna for the low bands? What kind of wire will you use? This analysis may change your plans.

Vintage Electronics - Antique radios and audio sold to collectors and dealers

Vintage Radio & Audio pages - A resource for Collectors and Restorers of Vintage Electronic Equipment.

Johan's old radios - collection of vintage audio equipment

M.V.S.Z AO Svetlana - Audio hi-end tubes for amplifier

Wirelessness - Commentary, news, and analysis on Amateur Radio and the wireless industry in general.

18SD001 live streaming - Live streaming audio from 18SD001 locator KM18VA Athens Greece usually online during week-ends

Douglas: Live Douglas County Sheriff - Douglas County Sheriff dispatch channel

3840 Audio Archives Priority listing - 80/75 meter Amateur Radio recordings via various online tuners.

K5MQ Ham Radio Audio Recordings - Recordings of DX stations from around the world SSB and CW.

Micro908 Kit - A re-usable control & computing platform for antenna measurement, PSK31 digital modems, audio filtering, signal source & VFO, memory keyer by AMQRP

Getting started on RTTY - A complete guide from the station setup, rtty software customization, tips on tuning rtty signals and setting the proper audio level and filters by Andrew G8GNI M5AEX

IC7000BKT Icom IC-7000 CAT Control - CAT Control for Icom IC-7000 for windows. Management and synchronization of all memory bank, Management filters, volume, tones, DUP, DTCS, import export, audio recording and log frequency and signal,Auto CQ audio for repetitive calls

Natural Radio Listening: Streaming Audio - A page about fascinating Very Low Frequency and natural radio, with lots of streaming audio links from remote receivers. Some experimental stereo pairs around the world.

The Tube Center - Supplying over 2000 different vacuum tube types, valves, grid caps, sockets and capacitors. It is easy for Antique collectors, Ham radio operators, audio enthusiasts, broadcast enthusiasts and amateur radio hobbyists to buy, sell and trade vacuum tubes, electron tubes, audio tubes, valves, grid caps, sockets and capacitors

The RF Shop - Repair HF, VHF and UHF amateur equipment and provide complete repair service for All Audio and .PA Equipment.

AutoRec - AutoRec is windows freeware time based automatic recorder - player for radio broadcast. Auto Recorder will record or play wav audio files, and execute batch or other executable application programs at scheduled times. The primary use for Auto Recorder is automatic, unattended recording and playback of network or other satellite-delivered radio station program material.

SweepGen - SweepGen turns a PC into an Audio Oscillator and Sweep Generator which can be used for testing audio or educational purposes. In conjunction with audio test instruments, you can make frequency response plots. SweepGen uses the sound card in your PC to produce sinewaves

Sine Wave Generator - Freeware windows Wave Generator use the sound card's output as sine wave output. A built in sweep algorithm is used by audio hackers to measure frequency repsonses of their amplifiers

QuickMix - Freeware windows program that allows you to store configuration of your audio mixer in a settings file, and to restore the mixer to that state whenever you want. Useful for digital mode operations where different dsp programs may require different audio in and out settings.

HI-FI Audio with Kenwood TS-850SAT - Setup guide for DSP-100 and TS-850

Vacuum Tube Software - The VTDATA software package is a complete vacuum tube manual on your computer. It has all the information you'd expect in a tube manual. VTDATA's database also includes vacuum tubes of historical interest, such as the early "two digit" types (45, 80, etc.) and hi-fi audio types.