- DF9CY Technical Articles and Material
- Christoph
A collection of technical articles on antennas, radios and other stuff.
[ Hits: 894 | Votes: 1 | Rating: 8 ]
- Ham Radio Projects by Wireless Society of Southern Maine
- Tim Watson
Wireless Society of Southern Maine Projects instructions and photos for many ham radio projects and ...
[ Hits: 229 | Votes: 0 | Rating: 0 ]
- Homebrew projects by dl5dbm
- Anwar von Sroka
pop
KW,2-meter,6-meter,antennas,amplifiers,preamps,powersupplys, and more
[ Hits: 27259 | Votes: 154 | Rating: 6.77 ]
- QRO GU-84B TETRODE
- Chris Fox NI4L
GU-84B Homebrew HF Amplifiers
[ Hits: 8454 | Votes: 21 | Rating: 4.43 ]
- 27Cxx Eprom programmer and KissEprom
- Talino iz7ath
Simple eprom programmer for 27Cxx family used in TNC and G3ruh modem eprom tutorial schematics ...
[ Hits: 5619 | Votes: 77 | Rating: 5.26 ]
- 40 meter QRP Transceiver
This semi homebrew QRP low power CW transceiver is based on the ARK 40 transceiver ...
[ Hits: 9487 | Votes: 7 | Rating: 6.85 ]
- 40 Segment LED S-Meter
- n6bg
Provide your radio with a very string signal then adjust the HIGH LEVEL pot to ...
[ Hits: 94 | Votes: 0 | Rating: 0 ]
- 7 MHz SSB Transceiver
- Yujin
Circuit diagram and discription of 7 MHz Ham Radio SSB Transceiver Transceiver using two MC1496 ...
[ Hits: 19051 | Votes: 43 | Rating: 6.48 ]
- 75 meter AM Transceiver
Frequency coverage: 3.75 MHz to 4.00 MH transceiver for 75 MHz band
[ Hits: 1190 | Votes: 1 | Rating: 10 ]
- 80 Watt FM stereo broadcast transmitter
A high quality broadcast transmitter big enough for a medium town
[ Hits: 713 | Votes: 1 | Rating: 10 ]
- A *balanced* balanced antenna tuner
The published version of this article appeared in the February 1990 issue of QST Magazine ...
[ Hits: 21676 | Votes: 11 | Rating: 7.28 ]
- A 2.3GHz to 432MHz receiver converter
Receiver converter that can be plugged to the backside of the Yaesu FT 817 battery ...
[ Hits: 1496 | Votes: 3 | Rating: 4 ]
- A 20 Ampere / 13,8V power supply
- Talino
A 20 ampere and more 13,8V power supply for RTX
[ Hits: 21493 | Votes: 43 | Rating: 5.57 ]
- A 6M Transverter
Build a transverter based on a 6M receive converter A 32MHz TTL oscillator is used ...
[ Hits: 4833 | Votes: 2 | Rating: 10 ]
- A cheap S Meter
A low-level voltage meter and could even be used for audio purposes.
[ Hits: 2640 | Votes: 4 | Rating: 6.25 ]
- A CW Sidetone Bypass
A CW sidetone bypass for the NESCAF audio filter a small and low cost circuit ...
[ Hits: 483 | Votes: 0 | Rating: 0 ]
- A D-ATV transmitter project
- F4DAY
Build this simple and cheap 70 MHz Exciter and start to transmit Digital Television by ...
[ Hits: 2569 | Votes: 1 | Rating: 8 ]
- A Modern Thermocouple Ammeter
Thermocouple ammeters are very rare these days but the job they were perfect for measuring ...
[ Hits: 2874 | Votes: 2 | Rating: 6 ]
- A Pb Battery Recharger
- Talino
The starting idea was to build a battery charger for Pb battery used in car ...
[ Hits: 3224 | Votes: 3 | Rating: 3.67 ]
- A Simple Dual Band SSB Transceiver
Homebrew a dual-band transceiver with a crisp receiver and a clean SSB signal
[ Hits: 3046 | Votes: 2 | Rating: 7 ]
- A Simple Telegraph Key
- Webmaster
How To Build Code-Practice Apparatus: A Simple Telegraph Key
[ Hits: 9783 | Votes: 12 | Rating: 5.75 ]
- A Simple VFO for 80 and 160 Meters
This VFO is simple to build and is quite stable.
[ Hits: 1479 | Votes: 1 | Rating: 7 ]
- A Three-Band One-Tube Novice Transmitter
- KC9KEP
A homebrew radio transmitter project based and inspired by the original 30 Watts input on ...
[ Hits: 345 | Votes: 2 | Rating: 10 ]
- ACWS: Automatic CW Sender by iz7ath
- Talino
Simple circuit, with a simple push, transmit a memorized Cw messages
[ Hits: 1452 | Votes: 1 | Rating: 8 ]
- Analog Inputs on a KPC-9612 TNC
- Ian McLaughlin
Modify a KPC 9612 to give a total of four analog input for remote monitoring ...
[ Hits: 681 | Votes: 3 | Rating: 7 ]
- Antenna elevator system for amateur satellites
- Jerry
Smart homebrew antenna ELEVATOR system with linear actuator The actuator is a cheap and heavy ...
[ Hits: 22325 | Votes: 44 | Rating: 7.66 ]
- AR8000 Serial Link
A simple and inexpensive way to connect an AR8000 to a portable computer
[ Hits: 1621 | Votes: 2 | Rating: 6.5 ]
- Automatic Band Decoder
- OZ1CX
An automatic band decoder made into a nice enclosure with LED indicators for the chosen ...
[ Hits: 651 | Votes: 1 | Rating: 10 ]
- Automatic Band Decoders
Build your own band decoder, for kenwood rigs too
[ Hits: 1192 | Votes: 1 | Rating: 10 ]
- Automatic Band Decoders
To build a Band Decoder to drive our remote relays we need to supply the ...
[ Hits: 1205 | Votes: 1 | Rating: 2 ]
- Automatic Roger Beep for VHF/UHF Contests
- M1GEO
new
This project details an automatic roger beep circuit for VHF UHF contests Built around a ...
[ Hits: 33 | Votes: 0 | Rating: 0 ]
- Band decoder
Automatic and decoder project by sm3wmv
[ Hits: 724 | Votes: 1 | Rating: 1 ]
- Basic RF Oscillator
- SM0VPO
A simple RF oscillator by Harry Lythall - SM0VPO
[ Hits: 1477 | Votes: 2 | Rating: 6.5 ]
- Batlabs
Motorola two way systems technical documents
[ Hits: 1133 | Votes: 3 | Rating: 6 ]
- Bluetooth Audio and Amateur Radio
Bluetooth headsets are very common with cell phone users As such many amateurs may already ...
[ Hits: 4245 | Votes: 10 | Rating: 6.6 ]
- Build A 100Khz Crystal Calibrator
[ Hits: 2563 | Votes: 7 | Rating: 7.15 ]
- Build a Vox Circuit
by Mike Martell N1HFX
[ Hits: 5004 | Votes: 22 | Rating: 5.19 ]
- Build yourself an RF Ammeter
An Easy way to Monitor RF AC or DC current with one instrument by W5JGV ...
[ Hits: 3619 | Votes: 6 | Rating: 6.33 ]
- Change Battery on DVS-2
The DVS-2 is a CQ unit for the Yaesu Trancievers.
[ Hits: 595 | Votes: 0 | Rating: 0 ]
- CW Filter
I0QM Gaussian CW Filter page This Filter for the weak signals is the evolution of ...
[ Hits: 1894 | Votes: 2 | Rating: 8 ]
- CW Key-to-Rig Switch Box
- AB3AP
This is an easy afternoon project to switch multiple cw keys between several rigs If ...
[ Hits: 46 | Votes: 0 | Rating: 0 ]
- DirectDirt
The Information Source For Makers Experimenters DIY Home Brewers Restorers and Amateur Radio Operators ...
[ Hits: 499 | Votes: 4 | Rating: 10 ]
- Display/Stabiliser unit
The Display/Stabiliser unit displays the signal frequency on a Hitachi LCD module.
[ Hits: 816 | Votes: 1 | Rating: 10 ]
- DIY Basic Electronics and Antennas
- KG4ZNC
DIY Basic Electronic Theory Basic Antenna Theory with Antennas built from common materials What does ...
[ Hits: 11369 | Votes: 15 | Rating: 7.85 ]
- DL6JAN's CW keyboard
- Christian
A micro processor interface that converts PC keyboard code into Morse code
[ Hits: 2683 | Votes: 6 | Rating: 9.5 ]
- Dual Output 200 MHz RF Generator/Detector
- Tom, VA7TA
Dual Output DDS Based RF Generator Detector with links for the associated QEX NimbleSig III ...
[ Hits: 1291 | Votes: 1 | Rating: 8 ]
- DVX Project
Digital Voice Transceiver Project This Project began to explore the use of the DVSI AMBE ...
[ Hits: 1481 | Votes: 1 | Rating: 1 ]
- EI7BA's Amateur Radio Pages
- EI7BA
Antennas and homebrew ancilliary equipment
[ Hits: 2721 | Votes: 17 | Rating: 9.18 ]
- EI9GQ
- EI9GQ
Homebrew page with some great homebrew gear shown here.
[ Hits: 25007 | Votes: 33 | Rating: 7.81 ]
- Eprom Eraser
- Talino
An Eprom Eraser with UV Ray for 27Cxx Eprom and similar common in TNC with ...
[ Hits: 1815 | Votes: 4 | Rating: 7.5 ]
- ESR METER: (Equivalent Serie Resistance of capacitors)
- Talino
Esr meter to measure the equivalent serie resistance of capacitors
[ Hits: 5550 | Votes: 28 | Rating: 5.63 ]
- Experimental HF 6-band SSB transceiver
- DK7IH
updated
An SSB radio for the HF bands will be presented Featuring 12 to 20 Watts ...
[ Hits: 737 | Votes: 15 | Rating: 9.34 ]
- F5AYE microwaves pages
- PILLER JeanPaul
Pages on microwaves,homebrew, beacon HB9G 5.7 and 10 Ghz.
[ Hits: 2461 | Votes: 4 | Rating: 6.25 ]
- F5RDH homebrew projects
- Jean-Marc
some interestig homebrew projects
[ Hits: 14681 | Votes: 35 | Rating: 7.94 ]
- Ferrite information
Ferrite Toroidal Cores Magnetic Properties of Ferrite Materials EMI RFI Suppression Design Considerations Ferrite Beads ...
[ Hits: 13701 | Votes: 4 | Rating: 5 ]
- Frequency Locked Loop VFO for HF
A device which joins in a single microprocessor a digital programmable frequency meter and a ...
[ Hits: 1854 | Votes: 4 | Rating: 7.75 ]
- G3PTO
- g3pto
Homebuilt Amateur Radio & CW communications web site
[ Hits: 17006 | Votes: 12 | Rating: 7.6 ]
- Ham Radio Beat Frequency Oscillator
A simple free running oscillator oscillating at the receiver s IF intermediate frequency beats with ...
[ Hits: 718 | Votes: 0 | Rating: 0 ]
- Ham Radio Circuits
- Yujin
pop
Circuits of SSB Transceiver AM DSB Transmitter Antennas BFO VFO 807 FM Mike Crystal filter ...
[ Hits: 36152 | Votes: 57 | Rating: 5.36 ]
- HAM Radio DIY Projects by DL8ABH
- Wolfgang Palme DK5EI
Ham Radio DIY projects all around morse semi automatic and fully automatic bug keys construction ...
[ Hits: 152 | Votes: 0 | Rating: 0 ]
- Ham Radio Homebrewing by IK3OIL
- Francesco Morgantini
A collection of projects for Amateur Radio Homebrewing enthusiasts
[ Hits: 23650 | Votes: 21 | Rating: 7.28 ]
- High Potential Tester (high-pot.)
[ Hits: 856 | Votes: 2 | Rating: 7.5 ]
- Hombrewing an HF Transceiver
This page will describe the construction of a multi band SSB transceiver with all its ...
[ Hits: 4366 | Votes: 6 | Rating: 8.33 ]
- Home Brew a Condenser Microphone
An inexpensive condenser microphone with excellent performance can be easily constructed with easily available parts ...
[ Hits: 1887 | Votes: 2 | Rating: 5.5 ]
- Home Made 5KV Capacitor
Building a high voltage (5KV), variable plate capacitor (17 to 220pF)
[ Hits: 1360 | Votes: 7 | Rating: 7.28 ]
- Homebrew Butterfly Capacitor
Butterfly capacitors are hard to find expensive but they can be home made by PY1AHD ...
[ Hits: 4019 | Votes: 12 | Rating: 5.58 ]
- Homebrew Dow-Key
Homemade an external T/R switch for your vintage RTX by KB8OJH
[ Hits: 353 | Votes: 0 | Rating: 0 ]
- Homebrew resources for wireless enthusiasts
- Sandeep
PDF resources containing information on low cost ssb am cw circuits which are useful for ...
[ Hits: 4528 | Votes: 8 | Rating: 7.13 ]
- Homebrew Spectrum Analyzer
- KE0UV
Project for DXers and experimenters alike An old article publishes by 73 Amateur Radio magazine ...
[ Hits: 779 | Votes: 0 | Rating: 0 ]
- Homebrew your own inductors
- W3JIP
pop
Cannot find the inductors you need for an antenna a tuner or amplifier Build your ...
[ Hits: 28527 | Votes: 21 | Rating: 6.95 ]
- HSCW transmit interface box
Versatile transmit interface circuit
[ Hits: 1955 | Votes: 2 | Rating: 8 ]
- Hybrid antenna splitter
This scheme can be used to combine two antennas
[ Hits: 1053 | Votes: 0 | Rating: 0 ]
- Hybrid Synthesizer for UHF and microwave
A versatile hybrid synthesizer for UHF and Microwave Projects
[ Hits: 756 | Votes: 0 | Rating: 0 ]
- I1KFH Homebrewing
- Sergio Brovero i1kfh
Homebrew web site
[ Hits: 5434 | Votes: 3 | Rating: 6.67 ]
- IC8POF'S mods
- Phil
IC8POF s How To index Hamradio mods Crazy PA Tuner project transform any manual amplifier ...
[ Hits: 937 | Votes: 4 | Rating: 9.25 ]
- IK3OIL Ham radio homebrewing
- ik3oil
A site devoted to Amateur Radio Homebrewing CW decoder CW QRP Transceiver for the 40 ...
[ Hits: 4426 | Votes: 10 | Rating: 4.5 ]
- IK4AUY Sergio
- Sergio
Advanced QRP Low Cost Mosfets HF Linear Amplifier with schematics IMD gain data and more ...
[ Hits: 3633 | Votes: 27 | Rating: 8.1 ]
- IK8MKK Home-Made equipment
Two 50 Mhz amplifiers and antenna switch
[ Hits: 2590 | Votes: 2 | Rating: 9.5 ]
- Impedance Bridge
- SM0VPO
by Harry Lythall SM0VPO
[ Hits: 4333 | Votes: 11 | Rating: 7.38 ]
- Improved PL Tone encoder
N1HFX project to improve PL tone encoder providing a more stable frequency
[ Hits: 583 | Votes: 0 | Rating: 0 ]
- IZ7ATH Projects
- Talino
Antennas, Keyer, amplifier, transverter, baluns
[ Hits: 23717 | Votes: 26 | Rating: 6.32 ]
- K8CU Technical Topics
- K8CU
Well documented Amateur Radio HF VHF antenna projects high power Russian GS35B RF amplifiers mobile ...
[ Hits: 3898 | Votes: 11 | Rating: 7.64 ]
- K8TM Articles
- Dean Poeth, Schenectady, NY
This publications page lists articles on surface mount devices amateur radio soldering shunts and measuring ...
[ Hits: 1310 | Votes: 1 | Rating: 1 ]
- Kenwood Pin Connectors
Microphone, accessories and data packet pin connection schematics for Kenwood Radios
[ Hits: 4112 | Votes: 8 | Rating: 7.5 ]
- KI5YN QLF Filter
A microprocessor based interface designed to go between a standard Morse code key and a ...
[ Hits: 352 | Votes: 0 | Rating: 0 ]
- LC METER
- Talino
Inductance and Capacitance meter using``Frequency Shifted Oscillator
[ Hits: 11458 | Votes: 21 | Rating: 4.86 ]
- LF Converter
Home made LF converter, listen to signals below 300 KHz
[ Hits: 435 | Votes: 0 | Rating: 0 ]
- LY3LP laboratory
- Klemensas, LY3LP
QRP DIY and more
[ Hits: 1551 | Votes: 9 | Rating: 7.79 ]
- Make you drill more flexible
- talino
A useful tool to make PCB
[ Hits: 2803 | Votes: 2 | Rating: 3 ]
- N2CQR 20 meter portable DSB transceiver
Homebrewed transceiver for 20 meter originally born for 17 meters band
[ Hits: 1082 | Votes: 0 | Rating: 0 ]
- N3LS Larry
- Larry Sonnie Jr
Amateur radio links and homebrew projects
[ Hits: 17628 | Votes: 4 | Rating: 1.5 ]
- No tune SSB/CW transceivers
- Sergio
no tune SSB/CW transceiver for 1296, 2304, 5760 and 10368 MHz
[ Hits: 2774 | Votes: 3 | Rating: 7 ]
- OH7SV Matti Hohtola Ham Projects
- Matti Hohtola
The most modern QRP transceiver in 2004 Direct Conversion HF Transceiver with DDS LO 50 ...
[ Hits: 20374 | Votes: 36 | Rating: 8.11 ]
- PA3FXO projects
- Cees
Contains digimodes, antenna projects, DX info and lots more
[ Hits: 2041 | Votes: 4 | Rating: 9.75 ]
- PC to RTX interface
Schematics for IC 706 IC 718 IC 756PRO TS 570 TS 870 and simple universal ...
[ Hits: 3786 | Votes: 2 | Rating: 7.5 ]
- PCM Kestrel HF Transceiver
- vk3yy
This article describes an upgrade to the Kestrel transceiver replacing its LCD display with a ...
[ Hits: 68 | Votes: 0 | Rating: 0 ]
- PG1N's Hambrew Site
- Maarten Ouwehand
Homebrew-page of PG1N with lots of homebrew links
[ Hits: 1215 | Votes: 76 | Rating: 8.61 ]
- QRP 20m Antenna Tuner Unit
A QRP antenna tuner for 20 meters band
[ Hits: 10841 | Votes: 6 | Rating: 5.83 ]
- QRP AM(cw) Transmitter for 10 meters
In this project you will make a simple low power broadcast type circuit using a ...
[ Hits: 1240 | Votes: 2 | Rating: 10 ]
- Radio-TNC wiring
Radio-TNC wiring diagrams index
[ Hits: 3529 | Votes: 13 | Rating: 5.22 ]