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VU2VWN project to homebrew a CW for 40 meters band

This transceiver was conceived as a power-efficient, small, lighweight unit to be carried in the backpack, along with antenna and battery.

This array has been in use since 1989. The SWR from 3.5 to 3.9 is below 1.5:1. The F/R of the array is 20dB average and with some signals even better.

40 meter vertical antenna construction, a shortened easy-to-build vertical, with no-radials, made from surplus military camouflage poles

A vertical antenna specifically designed to work with the 80 meter CW beacon keyer

Yet another G5RV antenna plan to build a G5RV Antenna for 80 to 10 meters usage

A three element wire yagi antenna for 7 MHz project plan with drawings and EZNEC model

Alfa Tango DX is a premier resource for operators on the 11 meters band, providing a searchable database that includes news, cluster information, and discussion boards. This platform serves as a hub for DXers and contesters, offering valuable insights into activations, dx-peditions, contests, and meetings worldwide. The site features a variety of resources, including event calendars, award programs, and tools for logging contacts. Members can access exclusive content and participate in contests like the AT Women's Day Contest and the Eleven World Wide Contest. With a focus on community engagement, Alfa Tango DX fosters connections among operators and promotes the spirit of amateur radio. Whether you are a seasoned DXer or a newcomer to the 11m band, Alfa Tango DX provides essential information and support for enhancing your amateur radio experience. From QSL services to event participation, this resource is designed to meet the needs of all operators interested in the 11 meters band.

RF power meter, dummy load, project

Google map beacon map on 10 meter

A portable 4 elements quad antenna for 144 MHz, 9 to 10 DBd forward gain, 30 DB front-to-back ratio, and 33 DB front-to-side ratio

This antenna consists of 4 resonate dipoles made from 12 insulated copper electrical wire. The dipoles are resonate on the following bands: 6 meters, 10 meters, 12 meters and 17 meters.

Project plan for a 4 element yagi beam for 50 Mhz

A copper pipe Hentenna for 144 MHz. The Hentenna, a compact, high-gain loop antenna developed in Japan in the 1970s, offers approximately 5.1 dBd gain, comparable to a three-element Yagi. Adapted for 2 meters, it is crafted from copper pipe for simplicity, affordability, and broadband performance. Requiring no feed-point tuning, its construction involves soldering standard copper fittings. Installation demands non-conductive materials to minimize signal disruption. Versatile for vertical or horizontal polarization, it is ideal for FM, repeater, SSB, or CW applications. This design emphasizes practicality and performance for amateur radio enthusiasts

Homemade SWR PWR Meter based on Arduino

A home made vertical polarized moxon antenna for 144 MHz, includes dimensions, antenna pattern, SWR and antenna gain plots by WB5CXC

In this article the schematic is of AA5TB QRP power meter and dummy (50 Ohm) load combination

VA3EXT 5 element beam antenna for 6 meters band

An efficient 2 meter antenna disguised as a TV Satellite dish. This vertically polarized horizontal slot antenna, cut into the reflector of a TV dish, might be the ultimate stealth antenna.

This project was published in the April 2004 issue of the Australian magazine Amateur Radio, and has been designed using parts which are very readily available.

Very compact and high efficiency antenna ,very low radiation angle even at low height.

RX Antenna 160m/80m Band Splitter/Switch, a small project that will work along with the K9AY RX antenna

HF Forward Power & Return Loss (SWR) Meter

Conversion of Zetagi HP201 SWR wattmeter for HF Amateur Bands by G8ODE

KG4JJH moxon assembly plan for the 50 Mhz in a pdf file

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.

A moxon antenna for 11 meter band, suitable for 27 Mhz and 28 Mhz

A simple 40 meter CW transmitter, it sports full break-in operation and 250 mW of output power.

This HALO design is not ground dependent and can be mounted atop a section of PVC.

Stacking 2 Meter Halo Antennas by Mike Fedler N6TWW

A club project experiment about a vertical Moxon antenna for 20 meter band

A 7MHz Full wave loop antenna in diamond shape for field day operations made with three 31 foot Jackite poles

A 4 element Wire Yagi antenna design for the 40 meters band

A mobile vertical antenna for 40 meters band by W4NFR

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

A Wifi (V)SWR Meter to build yourself

An Attic version for limited space applications by NW9T

Building a PEP Power circuit for all analogue watt-meter

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.

A 3 element yagi antenna project for the 144 MHz band by PY5ALZ in portuguese

Design plan of an array of a two element yagis for 80m and a 3 element 40m antenna sharing a single 12 meters long boom by EA5DY

Making your own 2 metre (146 MHz) 5/8th wave whip antenna

KE4UYP project for a top fed 1/4 wave lenght linear loaded vertical for 80m or 160m

EF155A1 21 MHz monobander antenna by YU7EF

10 Meter Easy to build wire dipole antenna

picture and dimensions of a coax loop antenna centered at 51.490 MHz

Near Vertical Incidence Skywave (NVIS) and the 40 meter Novice Sub-band.

This homebrew six-meter linear amplifier started off life as a "junker" Alpha 76PA h.f. amplfier. Power output is 800W

January 1955 QST article by W5DQV about constructing a Cubical Quad antenna for 14MHz PDF File

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