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An antenna system is more easily interfaced to a radio when the input reactance at the feedline terminals is low or close to series resonance -
Easy to use Audio Spectrum- and PSK31 decoding program specially designed for SWL's who don't need TX or for anyone who just like to monitor PSK31 or analyse signals. Adjustable DSP and Spectrum settings for audio and frequency spectrum analasys or to set it for best decoding of PSK31 signals. By ON6MU -
Flexnet and AGW packet engine tested and reviewed by IZ7ATH -
Schematics and purchasing information for the Yaesu FT - 8x7 DIY Bluetooth CAT micro miniature interface done by YO3GGX -
A greyline map that automatically refreshes every five minutes DX.QSL.NET -
Simple PSK31 and RTTY program based on the AE4JY PSK engine. Logging inlcudes 10-10 and VP number. Exports to ADIF and CSV. -
Loop Antenna Starter Kit contains detailed plans for building the MTM Scientific, Inc. loop antenna from scratch. -
Eham users review of Kenwood TS-2000 -
Site dedicated to Amateur Radio Operators interested in working the 3076 US Counties for the USACA Award sponsored by CQ Magaine -
A quick and easy method of programming memory channels The Icom IC-V8000 manual leaves much to be desired due to the translation. The operator's manual included with the Icom IC-V8000 can be very confusing to the new ham and the old timer alike, and lots of hams get very disgusted when trying to program the IC V8000 using the instructions provided with the operator's manual. -
Ham Radio Tower Project at N0HR. Includes site plan, escavation, tower construction, HF antennas, grounding and lightning protection, coax and more. -
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A delta loop antenna for 17 meters band include eznec antenna model file -
Providing quality products to Amateur Radio Operators, morse keyers, portable paddle. -
Easy Quad calculator, enter center frequency to get a quad antenna size -
Details the offerings of Ham Buerger Inc., a company founded in 1965 to support the amateur radio community with communications products. The business provides a range of equipment, including Uniden Digital scanners, and maintains a section for equipment blow-out sales that feature professional 2-way radios and cell phones. Additionally, the company stocks hard-to-find NuTone products and provides repair services for most NuTone equipment. The site also references an Amateur Radio Band Plan and links to other ham radio resources, alongside a new product offering for RV and marine toilets, indicating a diversification beyond core amateur radio supplies. -
Excel spreadsheet to input your old manual logbook data and have it converted to the ADIF format -
Allow 137 Mhz range by Steve Warley -
BEAM_DX is a free windows software for radioamateurs or radio listeners usage. It allows to point a directionnal antenna towards an azimuth, a locator, an international prefix or any other geographical position on earth predefined by its latitude and its longitude -
A compact Beam Antenna That Can Be Built At Home. Made with lightweight wooden "X" frame with two folded and linear loaded wire elements. The two elements are approximately a half-wave each. -
In this designs G8ODE explains different methods to builds a choke balun -
All India radio official web site with live audio, programs and schedules -
Launching a balloon or kite supported tall vertical or protracted inverted L. -
By 9H1EL, supports RSGB 21-28, BERU, IOTA contests, FOC marathon and IARU 50MHz trophy, Control of FT1000MP, all Kenwood and ICOM Radios which have CAT system. -
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A freeware windows based Morse Code program written in Visual Basic 6 with source code freely available! The program uses DirectX DirectSound for some features. You may download the source code and/or the executable at the bottom of the page. -
Picture and specifications for Yaesu VX-7R -
Design your owm HF shiortened dipole. Includes a diagram of a lumped-constant loaded dipole antenna that is intended to fit in available space, rather than requiring a full 1/2 wavelength, at a specified frequency -
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This page describes a simple way to determine the main RF characteristics of a Wifi (IEEE802.11b/g wireless LAN) antenna. -
ARRL index of document about trapped antennas and notes on traps usage -
modifications collected about Yaesu VX-150 by mods.dk -
Article on rhombic antennas, radiaton patterns, disvantages, and more info on rhombic aerials -
Rigpix database large picture of the Yaesu FT-897 -
If your IC-706MKIIG will not power up without even hearing a relay click, check the state of the HV line. -
Displays map of the world, showing day and night areas. -
This doubet antenna is a half wave dipole antenna easy to build, in french -
AirMail is a HF radio mail program for sending and receiving messages via Pactor, either via the ham radio system or participating marine or commercial services -
German article on the multiband dipole by DG0KW. This antenna can be configured for several bands and can work in 3 or 4 bands mode. Can be used in restricted space lots. -
LOGvrr, a **freeware logging software** developed by IN3VRR, provides amateur radio operators with essential tools for managing their contacts. The resource details various downloadable components, including the core LOGvrr application, an international callbook with approximately 1.8 million callsigns, and utility programs for installation and data conversion. It supports functionalities like logging QSOs, managing awards, and interfacing with PacketCluster systems, with specific instructions for installation on Windows operating systems, including compatibility notes for Windows 10 and 11 using Hyper-V or DOSBOX. The site also offers external tools and documentation, such as the FAQ_VRR.PDF manual which covers installation, printer configuration, ADIF conversion, and Packet setup. It references third-party software like Mercurio and BV QSL Management for QSL printing, and ADIF2QSL for label printing, highlighting LOGvrr's ability to export QSOs in **ADIF format** for integration with services like LoTW. The resource includes historical updates, with the latest core component update in August 2014, and notes on the CallBook's maintenance up to 2015. -
The program calculates the actual position of the satellites using the NORAD 2LINE-element set, which is available via the Internet, for nearly all satellites. The position is then displayed in 3D-view as well as in 2D (mercator) view, where the footprints are also be shown. -
A vertical antenna for 40 and 80 meters band with no need of antenna tuner, based on a telescopic fiberglass mast of 48 feet by N8NSN -
Various radio related software, including some antenna analysis, and impedance calculators. -
Free Donwload of the PDF file of ITU and CQ zones of the world, made available by Icom America -
Presented here is a high-performance, circularly polarized omni-directional antenna that is easy to build, easy to tune, inexpensive, and will work all the mode J Low Earth Orbit (LEO) satellites -
Experiments with phased wire vertical antennas on 40 meters at VA7ST