ttl converter

Active Loop Converter for LF - Active Loop Converter for the LF Band by Lloyd Butler VK5BR originally published in Amateur Radio, July 2000)

A $20 HF mobile antenna - A few hours of fun with PVC and wire and you’ve got yourself a respectable road radiator. The antenna consists of little more than some PVC pipe topped by a RadioShack replacement whip antenna and a couple of coils made from a small roll of #14 house wire.

M1IOS - Wonder Whip antenna and tuner Priority listing - M1IOS Wonder Whip antenna - The M1IOS Wonder Whip A 10 dollars QRP Portable Multiband Antenna for HF, VHF and UHF A variation on the Miracle Whip and Wander Wand. This antenna tuning unit will get your SWR really low on telescopic whips, mobile 3/8th antenna and long wires. A remarkable little tuner that really works!

2 Element Quad Project - Homebrew quad antenna project you can build for very little cost for 12,11CB,10 meters and higher frequencies

Building Helical Antennas - Seattle Wireless - Photos and comments on building an helical antenna for wifi

cbradiomuseum.dk - A little privat collection of cb radio´s from denmark.

10 Years of Contests and QSLs - K5ZD article on contesting and qsling, originally appeared in the Scuttlebutt, newsletter of the Yankee Clipper Contest Club, March 2003

Grand Rapids Police Scanner - Listen as Grand Rapids cops fight crime and firefighters battle blazes, live and uncensored, 24/7.

KEPS Equipments for AO40 downlink - Complete receive system, downconverters, dishes, feeds and preamplifiers for AO40 satellite users

ARTRA QRP Kits - Lots of homebrew kits, you can buy kits or download as free, Association des Réalisation et Techniques RadioAmateurs. Transceivers, filters, converters, frequency meters, antenna analyzers, ATV receivers, interfaces

CAP Wireless Amplifiers - Design and manufacture application specific microwave and RF amplifiers, upconverters, downconverters and multifunction assemblies.

QRA to Lat/Long converter - G7RAU QRA to LAT/LONG and visa versa

Currency Converter - A courrency converter

XE.com - The Universal Currency Converter - Another currency converter

NASA - Science@NASA J-Track Spacecraft - The official NASA tool for orbital tracking of the International Space Station and the Space Shuttle is available through Human Space Flight's Orbital Tracking web page. Shuttle and Station tracking will be removed from J-Track in the near future, but many uncrewed satellites will still be available for tracking

Police Scanners, Scanner Frequencies,  ^pop - Provide information about police scanners and the hobby of radio scanning to those who know little or nothing about scanners as well as other great stuff for regular users to enjoy

How to Receive SSB Broadcasts With an AM Only Receiver - Iyou want to learn a little about how SSB works, or you absolutely cannot afford a more sophisticated shortwave receiver, try the following

A Little About Pirate Radio - How can I hear pirates? , Where and when should I listen? Whay will I hear?

Spectrum Lab  ^pop - DL4YHF's Audio Spectrum Analyser Spectrum Lab or Speclab started as a simple FFT program running under DOS a long time ago, but it is now a specialized audio analyzer, filter, frequency converter, hum filter, data logger and more. Can be used for MTHELL QRSS, DFCW, PSK, MSK, Castle

Cobracom - Oscilloscope, Realtime spectrum analyzer, Impedance meter, RLC bridge and signal generator for Windows. Is a Windows application that converts your PC into a powerful dual-trace signal analyzer (oscilloscope, FFT etc...) . Uses your PC sound card as an Analog-to-Digital a Converter to digitize any input waveform and as Digital-to-analog Converter for the signal generator. True 24 bit adc/dac 48K/96k/192k sampes/sec.

Winxx data converter - WinXXDataConverter is a Windows GUI application that will convert files between the various formats used by Win92, Win93, Win95, and Win96.

STSPLUS - STSORBIT PLUS, usually known as STSPLUS, will track the space shuttle or any satellite for which orbital data (TLEs) are available. A brief description of the program and several screen capture examples follow the links for downloading the program files.

Satbuster - SATBUSTER for Windows is especially designed for satellite visual observers and trackers. Its users, mainly amateur astronomers and radio amateurs, appreciate both the accuracy and the simple to use graphical interface.The software is aimed to hobbysts. However a growing number of plain folks are starting to use this tool to recognize and look at the International Space Station and the Space Shuttle during its missions too

Wavefront CompactPCI (CPCI) RF converter - The Wavefront CompactPCI (CPCI) RF converter provides a complete half-duplex radio front-end in an industry-standard 6U format. The architecture consists of dedicated receive and transmit channels that share a common RF interface.

A 6M Transverter - Build a transverter based on a 6M receive converter. A 32MHz TTL oscillator is used as the local oscillator for both transmitting and receiving. RX/TX switching is handled by three SPDT relays.