two tone oscillator

DX Dual Dipole  ^pop - Two dipoles fed from the same coaxial line by n6bz for 20 and 15 meters

BV6 50 Mhz Yagis - Two Yagis for six meters band, one 1 wavelength long with a gain of 9.5dBd, and the other a 2.1wl model with a gain of 11.8 dBd.

Zlog for windows - zLog for Windows is a freeware full-featured contest logging software that runs on Windows. It supports major international and domestic (JA) contests and is customizable to many other contests not directly supported by zLog. Features include CW keying via parallel/serial/USB interfaces, highly sophisticated TCP/IP network that allows instant synchronization of a log of an M/M station, rig control, PacketCluster connenction. By JJ1MED/AD6AJ

Longview East Texas radio club - LETARC provides public service to the Longview Tyler Gilmer Henderson Gladewater Marshal Texas areas through the availablility of their SKYWARN alert repeater and a large network of weather watchers.

SV5BYR Mike - Six meters (6m) operation and satellites and two meters band

AMPR Access in North Italy - Multiservice server accessible from either PacketRadio network and Internet

Electronics & Communications Classifieds - Forum based classified ads system dedicated to electronics and radios

Connect two PC together with Laplink cable - How to easy connect two Pc together with a laplink cable

How to easy-build a Ethernet LAN with two PC - How to easy connect two Pc together with a Ethernet Lan

Packet Radio User's Group - Japanes Packet radio club with link to Jouban TCP/IP network one of regional network of AMPRnet

Packet Work Group - The PWGN was founded June 14, 1991. Its purpose, among others, is to maintain en renew the network and to stimulate the use of digital communication techniques in amateur radio.

N5KDA Gary - Ham Radio, Meteor Scatter,Backscatter Meteors, WSJT, JT65B, weak signal,Vhf Ham Radio, VHF two meter meteor skeds, dx, cw and EME

Pactronics - Motorola Radius Two Way Radios, Kenwood, Maxon, Midland, Ranger, FRS, GMRS Radios

Smith chart - Match & display imped of antennas, can graphically visualize and compare two sets of measured impedances simultaneously.

BeaconSee - BeaconSee shows you, in real time, worldwide HF band openings on your PC. Analyses the audio signals from your radio, which is tuned to the NCDXF IARU HF beacon network and shows you the signal strength received from each of the 18 beacon transmitters as a plot of frequency spectrum against time.

Voice Descramble - This program descrambles band inverted encrypted transmissions, usually found on VHF/UHF. It uses a NCO (numerical controlled oscillator) to re-produce the originally inverted audio band.

THROB - An experimental program using 9 tones and FFT detection

WSJT High Speed Meteorscatter - "Software uses four-tone frequency-shift keying for meteor scatter. WSJT stands for ""Weak Signal communications, by K1JT"", and plans call for the program to include more than one communication mode."

XASTIR - Xastir is program for receiving and plotting APRS™ position packets. Development is a collaborative effort of programmers and amateur radio enthusiasts from around the world. Xastir supports many map formats and is highly customizable. Xastir runs on Windows/MacOSX/Linux/FreeBSD/Solaris/Lindows. It supports 125 map formats, several types of TNC's and weather stations, Festival speech synthesizer, AX.25 networking (Soundmodem/Baycom/SCC!) and seven languages!.

WinPSKse - WinPSKse is a logical outgrowth of WinPSK as designed and written by AE4JY. The look and feel is intentionally similar, but some significant changes have been made, not the least of which is the ability toreceive two PSK31 signals simultaneously.

W6ELProp - Predicts ionospheric (sky-wave) propagation between any two locations on the earth on frequencies between 3 and 30 MHz

Double Tone Generator - Double tone generator for testing intermodulation

Beacon-Time Wizard Priority listing - BTW is a group of beacon information views and tools to enhance the enjoyment and usefulness of the NCDXF/IARU International Beacon Network and HF radio operation.

7 MHz SSB Transceiver  ^pop - Circuit diagram and discription of 7 MHz Ham Radio SSB Transceiver. Transceiver using two MC1496, 4.43 MHz Ladder filter, LM386, LM324 and IRF840 in final.

The G8TTI homebrews - Home made transverters blockschematics two metre HB9CV, 144MHz SSB Transceiver