Search results

Several projects which will allow you to build your own RF design test equipment.

One of the best antenna values on the market is the LightningBolt Quad. At about half the cost of a tri-band yagi, you get five band coverage with a single coax feedline and excellent performance from a light, low wind load antenna.

A near-copy of the PIC-E running the GPS-2E firmware

Index of logs hosted on DX.QSL.NET

80m hexfet power amplifier by W7ZOI

3 to 30 Mhz antenna analyzer schematic by YO3DAC / VA3IUL

SerialKey is a Freeware DOS Morse code keyboard that uses the serial port, by Jeff Rowberg (KF6RLU)

Faqs on six meters band, designed to help encourage hams to use and enjoy this band

We are hams who design high quality full colour QSL cards. Now we print also full colour backsides on our QSL cards. 1000 cards costs only 82 Euro. For more details write max@on5ur.be``Remember: The QSO is short, our QSL cards are forever !

Simple, easy to built match developed in 1995 for Yagis with resistitive loads of 12.5, 18 and 28 Ohm.

An interface for amplifier to TS-850S

The DSP Satellite Transceiver is a conceptual transceiver designed as a dedicated unit for amateur satellite operators. The initial concept was brought about by the lack of satellite functionality on modern amateur radio transceivers, and the specialized requirements of the ham radio operator who utilizes OSCAR amateur satellites.

Advanced QRP Low Cost Mosfets HF Linear Amplifier with schematics, IMD, gain data and more. Six articles about amateur radio.

Winding Toroids can be a real hassle for those of use who are left-handed or not so dexterous as we once were.

The purpose of this page is to capture and document the Yaesu FT-101 series radios during the 1970's

Iambic keyer with simple paddles and simple electronic circuit.

Amateur radio programs to download, locator , log, etc... for Psion Aprs maps for PC (ui-view)

I4FAF etrode Tube Linear Amplifier experience

This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.

PocketPC freeware that track satellites, and display their position on a map of the world. It also has a display that shows other relevant information useful to Ham Radio operators to allow them to work them.

Quagi 8el 70cm improved 13.77dBi by IK1HGE

Ham radio related catoons

VHF, UHF page, technical articles, projects, datasheets

ON6MU Optimized 10 and 6 and 4 element UHF Yagi Antenna

Includes links and documentation on wifi antennas, 2.4 GHz Coffee Can Feed Antennas

OE1MWW monopole antenna made with common RG 58 or RG 213 coaxial cable

This little antenna is cheap and easy to build, lightweight, and very functional on 2 meters and 70 centimeters by NA4IT

Answers to frequently asked questions for newcomers to the sport of amateur radio contesting.

A 1:1 to 4:1 switchable balun by N1LO

RF Choke to prevent hf currents on the feedline. This Magnetic Longwire Balun (MLB) makes it possible to efficiently use a coaxial lead-in cable with all forms of longwires, T-forms or other types of wire antennas, without the need for an antenna tuner.

A Versatile Innovative Portable Multi-band Tunable Antenna can work HF VHF and UHF ideal as portable or balcony antenna

ICOM IC-706MKII out of band Xmit Modification

ON6MU optimized 6/9 element vhf yagui antenna with antenna schematic plan and pictures of homebrewed samples.

Pictures and circuit diagramm to build this power amplifier for 2 meters

Clips of DX audio, some dating back to the late 70's to early 80's and up to March 2001

Various tests and designs, with photos of home made EH Antennas,simple and networked, and also sone CAN Antennas.

This VHF 145 MHz antenna is easy to build and with no radials. It shows equal gain of 5/8 lambda. It is light weight, you can hang it somewhere (on a tree may be) and work.

HF QSO/QSL/Award managment, ADIF Import/Export, full version free to everybody. Requires Access 97 or Access 2000 (with JPEG and TIFF filter installed), screen resolution 800x600/1024x768

An RF power amplifier, providing 7 Watts output in HF bands, schematic by ON6MU

How to create a simple but effective half wave dipole, illustrated instrucions on how to build wire antennas

Pictures and calculated values for this home made magnetic loop antenna for the 160 meters band by HB9MTN

Free program that interfaces most ICOM radios with the ILG radio frequencies database and lets you click a station in the database to tune your radio to the station, or scan the list looking for stations that are on the air.

KC22TX receiving loop antenna for 160 meter band

Grid Square and Distance calculator by w3km

Electronic circuit and components layout fot this VHF Preamp

For two purposes a Cross-Yagi can be useful Satellite work or if you need both vertical and horizontal polarization for terrestrial contacts

Icom IC-9100 pre release product infomration

Homebrewed jpole antenna for 50 mhz by IW0BZD, include pictures and schematics, in italian.

RF Choke to prevent hf currents on the feedline or...1:1 Choke Balun, sometimes called the "UGLY BALUN"

EI7BA describes a nice selfmade Hexbeam project for a single band version.