Search results

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

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

For amateur radio operators seeking to confirm two-way radio contacts, a QSL card serves as a traditional, tangible verification. ON5UR QSL Printing provides a service for designing and printing high-quality, full-color QSL cards, including options for full-color backsides. The service offers various paper weights, such as 250, 280, 300, and 400 grams, allowing hams to select a card stock that meets their preferences for durability and feel. Pricing structures are detailed for different quantities, with 1000 cards starting at 96.00 Euro for 300-gram stock with gloss laminate, inclusive of design costs. The service includes free QSL cards with larger orders, such as 500 free cards with a 2000-card order, or 500 free cards with a 7000-card order. Shipping costs are categorized into six zones, primarily covering Europe, with specific pricing for countries like Belgium (Zone 1) and a request-based system for other regions and export conditions outside Europe. Testimonials from operators like M0URX highlight the design quality and quick turnaround, which are crucial for DXpedition QSL managers needing efficient processing.

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

An interface for amplifier to TS-850S

Quagi 8el 70cm improved 13.77dBi by IK1HGE

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.

I4FAF etrode Tube Linear Amplifier experience

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

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.

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.

Ham radio related catoons

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

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

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

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

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

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

Modifying the _ICOM IC-706MKII_ transceiver for out-of-band transmit capability involves specific surface-mount device (SMD) removal on the main circuit board. This procedure enables transmit functionality from 0.5 MHz to 200 MHz, excluding the commercial FM-Wide broadcast band, significantly expanding the radio's operational frequency range. The modification requires careful handling of small components and a fine-tipped, low-wattage soldering iron. Prior to beginning, all programmed memories and initial setup configurations must be noted, as the modification process will erase them. The instructions detail the necessary tools, preparation steps, and the precise location of the two SMD diodes to be removed. These diodes are situated near an oblong crystal can and a test point labeled _CP3_ on the main board. Successful completion returns the unit to its default configuration, necessitating manual reprogramming of memory channels and initial settings. This project is suitable for operators with experience in SMD work and fine soldering.

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.

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.

A free windows SSTV receiving program specially designed for SWLers. This sstv decoder does not support SSTV TX. Automatic saving of images, based on MMSTV enigne, support multiple sound cards and advanced quality settings. This software is just capable to decode SSTV a good choice if you need to receive slow scan TV.

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

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

DL2HRF shortened dipole antenna for 80 meters band

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

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

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

Electronic circuit and components layout fot this VHF Preamp

Grid Square and Distance calculator by w3km

A database which allows the user to store and catalog QSL cards

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.

For amateur radio operators running Microsoft Windows XP or later, Lux-Log provides a robust logging and contest software solution, designed by Norbert Oberweis, LX1NO. It is capable of managing over 30,000 logbooks within a single database and image copy, offering comprehensive data handling features. The software facilitates data import and export via **ASCII** and **ADIF** formats, ensuring compatibility with other logging applications, and includes an integrated tool for converting data from other programs into ADIF. It provides instant feedback on previous contacts and country information during data entry, alongside static or serial value generation for contesters. Lux-Log integrates a versatile award module, currently supporting 123 definitions for popular awards such as DXCC, WAZ, WAS, US Counties, IOTA, and more. Operators can generate pre-defined and user-definable data queries, visualize statistics through bar/pie charts, and print QSL labels. The software also interfaces with the RAC Callbook and HamQTH, supports LoTW, and offers radio control for Icom and Yaesu FT-857 transceivers. Additionally, it supports telnet connections to internet clusters and integrates with K1EL's WinKey for CW generation, making it a comprehensive tool for both general logging and contesting activities.

Add some gain over your rubber dummy load with this full size dipole on your HT.

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

A portable dualband dipole robust and compact antenna usable for horizontal and vertical polarisation by ON6MU

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

Wideband VHF/UHF/SHF monolithic PreAmp based on MARx-series by ON6MU

This Yagi has a constant element-distance of 1,50 m. You must only correct the lengths of the elements for QSY, see table down. For the bands 10 m and 12 m the Yagi is working as a reflector-radiator-Yagi, for 15 m and 17 m as a beam with radiator and director.

The starting idea was to build a battery charger for Pb battery used in car and moto...