signal generator circuit

Guanella 4:1 balun - This article reviews the proposition that a 4:1 current balun in the style of Guanella can be constructed with both pairs of windings sharing a common magnetic circuit.

Beacon Signals.com Priority listing - Covering all areas of beacon signals including radio beacons and beacon technology. Access free beacon recordings and graphs using Spectrum Lab, SpectraVue, and CW Skimmer.

SWOT Radio Club - 2-Meter Weak-Signal Enthusiasts

WebSDR on 70cm band - 70cm and 23 cmd EME signals recorded using the 25 m dish in Dwingeloo by WebSDR Radio

NorComm Data Signaling - Sequential Decoders, DTMF, voice encryption, notch filters and band pass filters, single tone burst decoders.

Will Same - Manufacturer and exporter who have engaged in RF field , CATV , Telecom products field in Taiwan since 1990. Lightning Surge Protectors and arrestor, signal splitters, distribution amplifiers

Listing of Q Signals - Miscellaneous abbreviations and signals to be used in radiotelegraphy communications except in the maritime mobile service

JT6M.org - The purpose of this web site is to promote JT6M as a mode of communication on both 6M and 4M band and guide users through setting up and using JT6M effectively. Optimised for 6 metre band Meteor Scatter, JT6M allows you to make meteor scatter contacts easily. JT6M is part of the WSJT suite of digital weak signal software applications developed by Joe Taylor, K1JT

Software DSP for Weak Signal Enhancement - An Overview of Software DSP for Weak Signal Enhancement by Roger Rehr W3SZ at Elecraft Tech Notes

Long delayed echoes in EME - The following discussion about the long delayed echoes (LDE's) on the EME signals

Here Comes the Sun - Propagation and Sun - Solar activity can aid or hamper HF propagation beyond line-of-sight range, WA1SVF and N6BV answers to questions about Sun influence on radio signals propagation

Kenwood TS-50 IF-10D interface - Circuit of the Kenwood IF-10D interface for the TS-50 transceiver.

Ten-Tec Orion 9 MHz IF Output - This article describe hot extract a wideband 9 MHz IF sample signal from a Ten-Tec Orion model 565 by VE7TK

MiniDSP - MiniDSP is a platform for digital audio signal processing applications. Manufacture low cost digital signal processor kits for the DIY/OEM market. Our flexible audio platforms are software controlled and easily upgradeable.

IC-Prog Prototype Programmer - PIC Programmer software package that allows you to program all types of serial programmable Integrated Circuits using Windows 95/98/NT/2000/ME/XP

VOAProp - VOAProp shows you typical propagation for a given hour of the day during a given month. The propagation is shown as expected signal strengths to be received from different parts of the world, plotted on a world map. Windows freeware by G4ILO

Alternate Power Sources - Article about alternate power sources, like portable generators, solar panels, batteries and wind turbines

Resonant Frequency Calculator - This web based application will compute circuit values required for an L-C circuit to resonate at given frequency. Also it will compute the resonant frequency if given values for L and C.

Using Band-Pass Filters - Clean Up Your Signals with Band-Pass Filters

Frequency Counter project - Circuit and construction instruction designed by Mani VU2ITI

Dual Output 200 MHz RF Generator/Detector - Dual Output DDS Based RF Generator/Detector with links for the associated QEX NimbleSig III article download by Tom, VA7TA

A Simple Dual Band SSB Transceiver - Homebrew a dual-band transceiver with a crisp receiver and a clean SSB signal

M3 Electronix Semiconductor Analyzer Kit - A workbench instrument capable of testing transistors, diodes, FETs, usefull constructing QRP circuitry.

QRP AM CW transmitter - A simple low-power broadcast-type circuit, using a crystal oscillator integrated circuit and an a collector modulated AM oscillator

NB6M 10 Homebrew Receiver and Keying - Schematic of a homebrew receiver and keying