altai signal generators

4 Square Vertical Phased Array - Improve your 80 and 160 meter signal without a Yagi!

Broadband receiving antenna matching - This article addresses the subject of obtaining the best signal transfer from an antenna to the typical 50-ohm receiver input over a wide frequency range, with emphasis on medium-wave (500 – 2000 kHz), encompassing the standard AM broadcast band and the 160-m amateur band.

Amateur Radio Info - Information for Amateur Radio, Echolink,``Frequency assignment,Q Signals, RST, Fcc Part 97, 3rd Party traffic.

University of Hawaii Radio Astronomy - Online receiver streams signals from Jupiter and the sun

Radio Meteors-NASA Alabama - Icom PCR 1000 at NASA Marshall Space Flight Center monitoring meteor signals on 67.3 mhz.live.

Q Signals - Comprehensive Listing of Q Signals

DOMINO - new MFSK mode - A new MFSK mode with IFK by ZL1BPU and ZL2AFP.It is a simple Amateur Radio mode for keyboard QSOs. domino provides digital chat-mode operation on the HF bands, using the well respected sound card technique. Domino will handle TX/RX offsets and mistuning of 200Hz with ease, and will provide perfect copy of drifting signals up to 200Hz/minute!

The KM5ES Weak Signal Homepage Priority listing - This website is for amateur radio op's that use VHF/UHF weak signal communication's. Also homepage for the Sidewinders on Two Radio Club or SWOT.

MoonBounce (EME) & Weak Signals - Amateur Radio operation and weak signal detection pages by AF9Y

Timewave manuals - Timewave Documents for User Download, PK-900 Multimode Data Controller, PK-232 Multimode Data Controller, DSP-232 Multimode Data Controller, DSP-9 Noise Reduction and Bandpass Filter, Audio Signal Processor and Noise Reduction Filter, Audio Signal Processor and Noise Reduction Filter for Yaesu SP-5 and SP-6 Speakers

Voices of Distant Countries - Personal site of Russian DXer Dmitri Mezin. Contains a fresh edition of his Signal bulletin, archive of all previous issues and QSL gallery.

Interval Signals Archive - Large collection of audio clips of foreign radio stations, with identification announcements in various languages, signature tunes and jingles, and of course interval signals.

CW Skimmer - Multi-channel CW decoder and analyzer for Windows 98/ME/2000/XP. Simulatneously decode ALL cw signals in the receiver passband - up to 700 signals can be decoded in parallel and extract call sign

LF Analyser - Professional analyser sound signals, scope, spectrum, spectrograph

HF Analyzer - Professional analyser HF signals, work with bandwidth 500Hz....60Mhz, ddc-mode, scope, spectrum

Trimitator - Software for imitation digital radio-signals: ASK, FSK, BPSK, QPSK, variable speed, any frequency

59+ CW  ^pop - Freeware Win32 application can be used for sending CW signal to the transceiver over a COM port or simply listening to Morse code on the speaker. The application is very easy to configure and will allow you to you to add new Morse characters set speed, tone, dash, dot, PTT line delay and other parameters. It is also possible to set shortcuts for call, QTH, name, RST and ANY other QSO field.

AREight - This is the most advanced scanner software for the AR8200 and the AR8600. It can effect any type of scan, can scan from 1KHz to 3000MHz in one time. The AREight is a software for help you to listen signals from around the globe on the shortwave bands

SIGVIEW spectrum analyzer - Complete real time signal analysis software with wide range of powerful FFT spectral analysis tools, statistics functions and comprehensive visualization system.

A.M. tutorial - This tutorial is designed to help explain some of the concepts involved in RF power measurement for amplitute modulated signals.

Eliminate That QRM - reduce or completely eliminate interference from almost any local source whilst leaving the wanted signal relatively unaffected, even though it may be on the same frequency

430MHz ATV transmitter - ATV transmitter on 430MHz band used with special transmitting tube named 5894 for final stage. Run about 10W average for TV signal and 20W at synchronous peak. Final stage control gird modulation works well for NTSC color video signal and good at audio as well.

RFI Information Page - This page gives information about Radio Frequency Interference, the unwanted reception of radio signals. You'll find out how to determine what is at fault (the transmitter or the receiver) and what you can do in either case.

TVI filters - These filters are in use by hundreds of VHF weak signal operators and have been proven to be an effective solution for fundamental overload problems.

Amateur Radio Repeater Controller - The project requirement is to design the interface to the signal channel elements after the receiver and before the transmitter