homebrew rf

46 links

Petlowany Three-Band Burner Antenna - The Petlowany Three-Band Burner is a simple, low-cost, trapless short vertical antenna which amazingly works on three HF bands (20, 15 and 10 meters). This web page contains pictures, performance data, and enough construction details so you can homebrew your own.
[ Hits: 6057 | Votes: 5 | Rating: 7.2 ]

Delta loops for 15 20 and 30 m - Full Wave Delta Loops for 15, 20 and 30m with perimiter dipole, quiet, low TOA, mono-band - a perfect stealth omnidirectional solution
[ Hits: 3862 | Votes: 3 | Rating: 1 ]

Homebrew RF chocke - Magnetic Longwire Balun - 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.
[ Hits: 3415 | Votes: 3 | Rating: 10 ]

The Small, Powerful Hex Beam - How to homebrew an hex beam antenna for 20 17 15 12 10 meters band by VA7ST
[ Hits: 3028 | Votes: 0 | Rating: 0 ]

EWE Shortwave Antenna - What is an EWE Antenna, comparisons, performance and homebrew plan
[ Hits: 1204 | Votes: 0 | Rating: 0 ]

VHF antennas, construction and use - Article by VU2GT about VHF antennas, how to evaluate performances and models.
[ Hits: 994 | Votes: 0 | Rating: 0 ]

ATV 432 MHz transmitter - ATV 432 MHz AM transmitter schematic
[ Hits: 1091 | Votes: 5 | Rating: 9.4 ]

FT-897 Cat interface - HamRadioHomebrew Cat Interface for Yaesu FT-897 by PE1OPM
[ Hits: 5293 | Votes: 5 | Rating: 4.6 ]

Yaesu VX-2 USB programmin interface - DG6RBP homebrew project for a USB cable progtamming interface for the Yaesu VX-2 radio
[ Hits: 2150 | Votes: 4 | Rating: 5 ]

Fox Delta Amateur Radio Projects & Kits by VU2FD - Amateur Radio Projects & Kits for homebrewers, includes DDS,sound card interface,programmers, hamcom, frequency counter, RF Power Meter, modems and more.
[ Hits: 1302 | Votes: 4 | Rating: 10 ]

Power amplifier for 2m rig - An RF power supply for 144 MHz schematics and instructions
[ Hits: 2225 | Votes: 2 | Rating: 4 ]
Homebrew 50 MHz Amplifier - Home made RF power amplifier for six meter band
[ Hits: 1902 | Votes: 1 | Rating: 10 ]
VHF Linear Amplifier by SV1BSX - There is not a personal design on this page, just I've transfered useful notes from PHILIPS RF Bipolar Transistors - Data HandBook about BLY89C VHF Power transistor, which is very popular among Amateur Radio homebrewers
[ Hits: 1429 | Votes: 3 | Rating: 4 ]

Homebrew Butterfly Capacitor - Butterfly capacitors are hard to find, expensive but they can be home made by PY1AHD
[ Hits: 4017 | Votes: 12 | Rating: 5.58 ]

Portable RF Sniffer and Power Meter - Whether we are tuning up homebrew equipment, checking antenna VSWR, adjusting a linear amplifier, or just monitoring output power during a contest, almost all aspects of ham operation can use a power meter. Paul Wade W1GHZ
[ Hits: 1787 | Votes: 1 | Rating: 10 ]
Homebrewed RF power meters - Homebrewed handheld RF powermeters for various sensors by DL5NEG
[ Hits: 1285 | Votes: 0 | Rating: 0 ]

40 meter QRP Transceiver - This semi-homebrew QRP (low power) CW transceiver is based on the ARK-40 transceiver kit, by S&S Engineering. With its built-in CW keyer and 5 watts of power, the basic ARK-40 transceiver is an outstanding 40 meter CW performer
[ Hits: 9485 | Votes: 7 | Rating: 6.85 ]

Rig to Soundcard Interface by M0UKD - Practival project that contains two isolation transformers, one for AF from the tranciever to the line in on a soundcard, and one from the audio out of the soundcard back to the mic / data input of the radio. Both of which are variable inside the interface via two preset resistors.
[ Hits: 769 | Votes: 1 | Rating: 2 ]
Sound Card Interfacing - Homebrew your PC sound card to radio interface with this circuit obtained from the pages of Ernie Mills WM2U.
[ Hits: 802 | Votes: 0 | Rating: 0 ]

Homebrew RF Test Equipment - Several projects which will allow you to build your own RF design test equipment.
[ Hits: 3716 | Votes: 2 | Rating: 5.5 ]