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A PC headset to Rig adapter. Include a circuit diagram and a full part list for the project -
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An homebrew remote antenna switch by vk2zrm -
Theory of horizontal loop antennas, as discovered by G2PL using a lowered quad antenna and theorized by ZS6AKA -
by LA8OKA Martin Storli -
Building an omnidirectionnal antenna for the 23 cm band, 1240 - 1270 Mhz -
A 2W 80 meters transceiver assembled into a toaster case. -
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A 40/80 meters dipole made with two loading coils based on a project by IK1ZOY -
Small and inexpensive homebrew HF radio 5W Output, CW SSB AM FM, DSP, Speech Processor, Sprectrum Scope, Watefall Display. mcHF is a small, home-brewed amateur radio project. Firmware is released as open source. -
2,6 and 10 meters beacon located at Lake White, Ohio -
WM7D's FT100 resource page, dedicated to providing information about and resources for, the FT100 -
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Receiver converter that can be plugged to the backside of the Yaesu FT-817 battery powered portable transceiver -
A page dedicated to 2nd generation of the FTdx9000 series transceiver Yaesu FT2000 -
Demonstrates a practical approach to improving Morse code proficiency through a curated selection of audio files. The resource offers downloadable MP3 files designed for CW practice, catering to operators aiming to increase their copying speed and accuracy. Content includes both standard words and specific amateur radio callsign groups, which are crucial for effective on-air communication. The files are organized to facilitate progressive learning, allowing users to select material appropriate for their current skill level. This collection supports the development of essential CW operating skills, particularly for those preparing for contests, DXing, or general ragchewing on HF bands. The _ON6ZQ_ site, maintained by _Christophe David_, also features information on his _Reverse Beacon Network_ skimmer and _SOTA2APRS_ feed, indicating a strong focus on active operating modes and digital integration. -
The Folded Dipole is not used much amongst Radio amateurs, probably due to the fact that this antenna uses twice as much wire as a single-wire dipole. -
60KHz to 60MHz. laboratory quality Vector Network Analyzer project -
A vector graphic antenna analyzer project page by DC2WK demonstrating a project realized by DG7EAO includes, part list, schematics, and videos. -
Roger, G3XBM, shares his extensive experience in **QRP** (low-power) amateur radio operation, detailing various aspects of transmitting with minimal power. The resource provides insights into VLF (Very Low Frequency) reception techniques and the construction of simple **crystal radio sets**, reflecting a foundational approach to radio experimentation. It includes links to external resources covering QRP clubs, online receivers, manufacturers, and technical references, offering a curated collection for enthusiasts. His page serves as a hub for those interested in the challenges and rewards of QRP, often comparing the efficacy of different low-power setups. The practical application extends to understanding basic radio principles through hands-on projects like crystal sets, which G3XBM has explored. The collected links provide a starting point for further research into specific QRP equipment or operating practices, drawing on G3XBM's long-standing engagement with the QRP community. -
Plans and hex code for an RF wattmeter based on an Analog Devices AD8307 log amplifier. -
Homebrewed handheld RF powermeters for various sensors by DL5NEG -
A good overview article on power supplies by Karl Shoemaker AK2O of the Spokane Repeater Group -
Raising large Yagi antennas can be a challenging project. A trolley system will make the job a lot easier -
Codec2 is an open source low bit rate speech codec designed for communications quality speech at around 2400 bit/s. Applications include low bandwidth HF/VHF digital radio. -
Using a full-size antenna and a reasonably sensitive headphone, this simple switching mixer will produce an amazing abundance of signals on 80m. -
Download software for Kenwood Transceivers, like TS-990S TS-590S, TS-2000, TS-480HX or TS-480SAT -
This Arduino library allow you to control various functions of Yaesu FT-857 through the use of CAT functions. This may work even with FT-817 and FT-897. -
The EggBeater Antenna web page by ON6WG F5VIF a web site dedicate to this VHF UHF antenna -
A simple simple sweep generator circuit design where the sawtooth is generated by the PNP transistor and a 555 -
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Hammarlund HQ-129X Receiver, Heathkit C-3 Condenser Checker, Heathkit QF-1 Q-multiplier and more -
This is a "techie" site, dedicated to presenting service manuals, parts lists, schematic diagrams and other information of value to restorers and technicians who try to keep these radios working -
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Two Delta-Loops in phase. The purpose of this article is to propose an antenna with a high gain, a high efficiency and a very low price that is easy to build for any frequency. -
Best audio settings, modifications and tricks for the Yaesu FT-2000 by DK3HV -
Converting a PC Switching Power Supply to 13.5V by AA3SJ -
One of just a few webpages for the magic band, see it from the german point of view. -
Information about our local Echolink Node #1224, on Long Island NY -
The page, focuses on **TVRO** (Television Receive-Only) satellite systems, specifically addressing C-band and Ku-band reception. It covers technical aspects of digital video broadcasting, including **DVB** and MPEG-2 standards, relevant to satellite television enthusiasts. Content includes discussions on Digicipher 2 and 4DTV systems, which were prominent in North American satellite television at the time. The resource also references the South Scanner Satellite Services Chart (SSSSSC), a tool for identifying satellite transponders. While primarily about commercial satellite TV, the underlying principles of satellite signal reception and digital modulation have tangential relevance to amateur radio satellite operations. -
Modifications for motorola and ericsson radio repeater -
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About ham radio hobby with hundreds of related links -
A full galvanic isolation interface for digital modes tested with FT-847 -
N6GN's higher speed packet page for amateur radio digital networks -
G7LRR aerials's that work in small Garden of 20ft x 15ft with a 60ft mast -
This article contains the measurements for building a full wave loop using wire and length of 1/4 Wave Coax Matching Transformer -
VHF, ms, aurora, es, photos, audio, link, soft and more. -
The RoadTrek design presents some unique challenges to us hams. Here an example of a VHF and HF antenna installation on a VAN -
EXTFSK.DLL is an MMTTY extension that interfaces MMTTY to a user-made hardware device via serial port, parallel port or USB