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This homemade tube oscilloscope is based on the WaterMan Pocket-Scope 0510A, a 3 tube oscilloscope made in 1946. -
This program expedites the design of lumped-element diplexers using both the lowpass/highpass and the bandpass/bandstop topologies. -
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A QRP transceiver for 80 meters band by W1FB -
This article explores the Cobra Junior linear loaded antenna for 80m to 10m bands. This antenna is a linear loaded dipole described by W4JOH in 73 magazine June 1997 -
A project for a simple RTTY decoder based on Arduino UNO R3. Includes the RTTY modem source code available for download along to schematics pictures and references. -
This document contains the detailed instructions to build a homemade lindenblad antenna using a twin-lead as dipole elements. This document contains 9 pages and includes a detailed construction sequence and some drawings to build this antenna for UHF and VHF ham radio bands -
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Picture and specifications of the Yaesu FT-847 -
1:1 Ruthroff voltage balun using a T200-2 Toroid core -
Develops and manufactures radios and telecommunication devices for special applications. SDR Receivers, Digital HF transmitters, Digital SSB Exciter. -
Feld hell freeware windows program that permits RTX hellschriber operations by PA3BQS -
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The 5/8 vertical it quite popular and matching solutions can vary -
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3d parts printed to build an EZ-Lindenblad 2 Meters LEO Sat antenna as designed from Anthony Monteiro -
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SM5BSZ article on building VHF RF amplifiers -
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Picture and specifications for the Icom IC-9100 -
The Smith Chart was originally created many years ago as an RF engineering aid by Phillip Smith of RCA.These pages includes extesnive documentation on smith carts. -
Utility program to verify, merge, and sort standard 2-line orbital elements files -
Receiver converter that can be plugged to the backside of the Yaesu FT-817 battery powered portable transceiver -
Original Tuna-Tin 2 QRP CW transceiver article by W1CER -
Organization of Minnesota repeater owners and users, and Minnesota frequency coordination. -
A simple center-fed dipole made just with a thin-wall PVC pipe, aluminum tape, and RG-8X coax -
Packet Radio, dx news, QRP, awards and software from slovack radio club -
The Amateur Radio Society of ROYAL SIGNALS (British Army), 1550 Members. MERCURY Journal issued three times a year (Editor G3NVK) Regular (daily) Nets. Awards and Contests. Own QSL Bureau. E-mail List Server open to all. Regularly updated Web Site (Web Master G3NVK) includes EASYMAIL facility, Guest Book, Photo Gallery, Society Rules, Military Museums. -
7N3WVM homebrew project of a 3 W output CW transceiver on 7 MHz band -
The KA7OEI FT-817 pages, customizing/accessorizing the FT-817 -
The Peaberry SDR is the first and only do-it-yourself transceiver that doesn't require adding sound cards to your computer. -
An easy to make, cheap, no trap, multiband wire vertical antenna by PA1M -
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A vertical monoband antenna design that can work from 6 meters to 70 cm by F5ZV in French -
Operating a specialized DX cluster, this service provides real-time DX spots exclusively from stations confirmed to be _Log of The World_ (LoTW) users. This unique filtering mechanism allows DXers to prioritize contacts with stations that are highly likely to upload their logs to LoTW, streamlining the process of achieving confirmed DXCC or other awards. The cluster aggregates data from various sources, presenting a focused view of active LoTW participants across multiple bands. By narrowing the scope to LoTW-active stations, the platform significantly reduces the effort required for QSL management, as users can confidently pursue contacts knowing a digital confirmation is probable. This targeted approach is particularly beneficial for contesters and DXpedition chasers aiming for rapid award qualification, offering a strategic advantage in identifying viable contacts. The service supports both web-based access and traditional telnet connections, ensuring broad compatibility for amateur radio operators. It processes thousands of spots daily, with a focus on delivering accurate and timely information relevant to LoTW users, facilitating more efficient and productive operating sessions. -
Homebrew a compact yagi antenna for 14 Mhz suitable for those with small plots based on a design by AB4GX -
QSL Cards from ALL 338 DXCC Entities, deleted countries QSL Cards, other interesting cards -
A New Twist on Portable Multiband HF Dipoles, a Multi-band Spiral Dipole Off-Center-Feed match (OCF) antenna solution. -
Raspberry Pi WebSDR Receiver Project running SoftRock Lite ii Receiver (40m) and Raspberry Pi Model B -
Beaconmap is a Win95/98/NT program to help listeners to identify the beacon stations of the NCDXF/IARU beacon network. The program displays a flashing dot at the location of the beacon that is currently transmitting. The call sign of the beacon, as well as the QTH is shown in the status bar. By PA1ARE -
A museum of thousands of telegraph keys, radios, microphones, enigma cipher machines, and scientific instruments. -
Fort myers amateur radio club is located in fort myers florida. fmarc has around 300 ham radio operators. -
Building an Open Source Arduino APRS Tracker with LCD & GPS ( SVTrackR ) -
The multiuser/multitasking BayCom Packet Terminal Driver program is a general purpose communications package for communicating with a BayCom modem attached to your IBM-PC/clone in conjunction with the TFPCX Baycom driver software. The software will also work with a normal TNC if it supports KISS mode, such as the Kantronics range. -
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This program extracts statistics from a dx.dat file to show numbers of spots for each country on each band -
YY5PER video of a Icom IC-7000 modified for TV reception