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A 2 meter (146 Mhz) J-Pole antenna that is inexpensive, and easy to build.

Here is how to build a high gain antenna for 2.4 gHz wireless networks. Several hams are experimenting with these devices in an effort to build a network. It is sometimes referred to as Hinternet or HSMM.

Make your own VHF/UHF folded dipoles from aluminium tubing. Learn tips for folding yagi, softening the tubing, bending jig and make all waterproofing

The boomless quad antenna is a unique design that offers versatility for amateur radio operators. This antenna consists of two half-wave dipoles arranged in a square or circular shape, allowing for both vertical and horizontal polarization depending on the feed point. The design facilitates easy installation and rotation, making it suitable for various operating conditions. The construction utilizes strong materials, such as bamboo, and incorporates waterproofing techniques to enhance durability. This project outlines the necessary dimensions and materials, including copper wire and insulators, to successfully build the antenna. It emphasizes the importance of tuning each radiator element for optimal performance. The boomless quad is particularly effective across multiple HF bands, including 14 MHz, 21 MHz, and 28 MHz. By following the detailed instructions, operators can achieve a reliable and efficient antenna setup that enhances their DXing and contesting capabilities.

Yagi plans and notes for 6m, 2m, 70cm and 23cm

Description and phots of a DIY moxon antenna for six meters band, includes clear pictures, drawings and assembling instruction to build this compact antenna for 50 mhz by N2MH

The website https://www.qsl.net/dl5dbm showcases homebrew projects related to KW, 2-meter, 6-meter, antennas, amplifiers, preamps, power supplies, and more. It provides information and resources for radio amateurs interested in DIY projects and experimentation.

Here is a 70cm (440 Mhz) J-Pole antenna that is inexpensive, and easy to build. Author use 1/2 inch copper pipe, and the associated fittings necessary. The dimensions aren't typical however, this is what it took to get its SWR low.

If you want a top-performance VHF/UHF Long Yagi, you will probably have to build it yourself.

Yagi beam plans for 144MHz band

DIY Basic Electronic Theory, Basic Antenna Theory with Antennas built from common materials. What does SWR really mean. Baluns from transmission line.

The article provides detailed instructions on how to build a half-sloper antenna for the 160 meters band. It explains the concept of a sloper antenna and how it differs from a slooper. The article includes practical tips on the construction and installation of the antenna to ensure optimal performance. The intended audience is amateur radio operators interested in building their own antenna for the 160 meters band. The content is informative, practical, and focused on DIY antenna building.

The latest and best yagi beams for 432MHz tested and optimized with NEC

How to DIY a 9:1 balun in french

The Inverted L antenna is a versatile and efficient design suitable for small gardens, allowing amateur radio operators to operate on multiple bands. This project outlines the construction of a 5-band inverted L antenna, which can cover HF bands effectively. The design is particularly advantageous for those with limited space, as it requires minimal ground space while providing good performance. The antenna can be easily constructed using common materials, making it accessible for both beginners and experienced hams. In this guide, GM0ONX shares detailed instructions on how to build the inverted L antenna, including dimensions and tuning tips. The project emphasizes the importance of proper installation and grounding to ensure optimal performance. Additionally, it discusses the antenna's compatibility with various transceivers and the potential for portable operation. This resource is ideal for hams looking to enhance their station with a multiband antenna that performs well in limited space.

A DIY discone antenna project made to improve receiveing performance of an RTLSDR receiver.

Two Yagis for six meters band, one 1 wavelength long with a gain of 9.5dBd, and the other a 2.1wl model with a gain of 11.8 dBd.

WILLMAR MN KANDIYOHI CO. Police fire EMS highway dept.

An introduction to DIY building of a concrete base for a 45' mast.

Schematic for a DIY 70 cm vertical antenna

Inline RF Power & VSWR Meter. A DIY meter 0 to 30 Watt with Average and Peak. Circuit Description, Arduino Nano software code and part list to DIY your own Digital SWR Meter

How to extend your Wireless Network by building a 2.4 gHz wifi cantenna

Simple DIY stealth apartment antenna for 20m and 40m. It is basically a ZigZag quarter wave dipole antenna

The Homebase10 is a simple to make wire halo antenna for 10m (28MHz) built using parts available from the local DIY store.The resulting antenna is very effective on 10m despite its small size and light weight.

Schematics and purchasing information for the Yaesu FT - 8x7 DIY Bluetooth CAT micro miniature interface done by YO3GGX

Built around a 1/2" pvc frame, Larry's 6 meter moxon antenna is made from #8 aluminum ground wire

Electronic Kits and parts

An introduction to antennad including a DIY assembly instruction for a A Ground Plane Antenna for NOAA Weather Stations

The page discusses Axial-Mode Helical Antennas, focusing on turning helical antennas over perfect ground and modeling helices in NEC-2 for optimized design. It covers topics such as high-gain performance, broadband, impedance matching, radiation pattern, feedline, balun, near field, far field, and DIY applications.

A five element quad antenna for 144 MHz DIY Project. This 2 Meter 5 Element Quad antenna was modeled using EZNEC, with a boom from a UHF TV antenna and CPVC pipe for spreaders. Constructed for 146MHz, it exhibits a gain of 10.7dB and an impedance of 75 ohms. Real-world results surpass the HT antenna, reaching over 20 repeaters up to 75 miles away. The design, costing around $10, employs simple tools for assembly.

Small & practical DIY inverted U antenna. This design worked very well during the 2017 CQWW 160M SSB contest.

An home made SWR meter for 2.4 GHz. A DIY SWR meter that allow precise measurements and calibration of any WiFi antenna. This is test equipment everyone who build wifi antennas should have in their shack. Article is in french and include some videos.

DIY a sector antenna for de Wifi 2,4GHz ISM band.

The circuit is based on two AD8307 log amplifiers, which are connected to the forward and reflected ports on a directional coupler

DIY kits a 70W SSB linear Power Amplifier for YAESU FT-817 KX3 running HF 80m-10m bands

A home made sweeping signal generator up to 2 GHz

QRP DIY and more

A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.

DIY a Wi-FI Helical Antenna for better performances, a project by PA0HOO i Dutch end English

A DIY project of a WiFi 10 elements Yagi antenna

A complete DIY Raspberry Pi Weather Station including software, capable to read wind speed, wind direction, rain gauge and with a temperature and humidity sensor along to a camera.

Interesting article on multiband fan dipoles. This article give an overview on designing this wire antenna, and planning a robust installation and proper feed line. Includes notes on setting up a commercial fan dipole antenna and on how diy your own.

DIY voice keyer for your next ham radio contest. An interesting homebew voice keyer project by ON7EQ

A DIY guide to build your own compact multiband HF antenna based on the G3TXQ version using a 1:4 balun. This article includes the full part list and instructions to assembly, including the center plate.

GPS module for Yaesu VX-8DR/DE handheld transceivers with ublox NEO-6M chip and Arduino Nano.

Fabricates baseplate components, and provides hardware kits for DIY hex beam, spiderbeam and moxon antennas.

A simple 50 ohm dummy load to test transmitters. includes a simple RF diode detector to measure the peak voltage, and calculate the power

This is a one for all antenna tuner with wide range tuning on all the HF bands. The tuner is based on a G3WQW design. DIY project by PD7MAA

How to receive JT-65 signals using a cheap RTL-SDR dongle with the 820T2 tuner chip

A simple home made desk microphone project that can be fitted into a small plastic project box