diy swr meter

5 Element yagi for 10 meters - A directional 5 element yagi antenna for 28.5 Mhz in spanish

A 2 elements yagi antenna for 28 Mhz - An inexpensive antenna for 10 meters band in spanish

WARC 3 band dipole - A dipole antenna for 12 17 and 30 meters band

PY6CJ 80/40 meters dipole - A center feed trapped dipole for 80 and 40 meter band in spanish

NVI 40 Meter Antenna Modeling - The idea of using a low mount dipole, enhanced with reflector wires directly beneath the dipole, on the ground, appears to be a very good approach to creating an NVI specific antenna for local HF operation.

The Hudson antenna - A vertical antenna for 80 and 40 meters project with lots of assembling pictures and plan by LU9DPD in spanish

40M 3 element beam - History project and dimensions of a 3 element yagi beam for 40 meters band

Top loaded vertical - Vertical Antenna for 40m Band with elevated Radials Top Load is a Mesh 2 x 1 meter (Netz 2x1m) enamelled wire 0.5 mm diameter (CuL 0,5mm)

Portable dipole for 40 Meters band - Pictures and swr reports for a portable dipole antenna for 40 meters band in german

50 Mhz J-pole antenna - A project for a jpole antenna for the six meters band. Includes dimensions building instructions and pictures of the assemblig phases. In Italian

Loaded Vertical for 80 Meters - Another version of the DJ8RB loaded vertical antenna

Broad Band Dipole for 80m - Mesh constructed with enamelled wire 0.5 mm diameter For installing a support (plastic rope 2 mm) is needed. Antenna used on Solomon Isl in 1995 H44/DJ9RB

VSWR Explained - An interesting article on Voltage Standing Wave Ratio vs Current Standing Wave Ratio by EPARA

The Low Frequency Receiving Loop - The Spreaders are 3 feet, making the loop 6 feet in diameter. There are 5 spreaders so the windings can alternate from side to side. There are 30 turns of 18 gauge stranded insulated wire.

The EZ-Tuner - The "EZ-Tuner" is a homebrew automatic legal-limit antenna tuner that covers all amateur HF bands from 160-10 meters. Using a T-network design and controlled by a BASIC Stamp BS2sx microcontroller, the EZ-Tuner will match at least a 16:1 VSWR for either unbalanced or balanced transmission lines.

Building VHF antennas - An article with notes on home-brewing a 2 meter yagi antenna, a 70 CM "potato masher" and a 70 cm yagi antenna

Copper Cactus Dual-Band - Copper Cactus Dual-Band Super J-Pole Antenna Project 2 meter 70 Cm Home brew antenna

WD2XSH The 500 KC Amateur Radio Experimental Group - The ARRL 600 meter experimental group

K9ONA Six Meter Club of Chicago - Six meter club of chicago smcc amateur radiomembers interested in hf/vhf/uhf, special events and public service

KC8SWR Plymouth - Plymouth Historical Museum radio station

RadioCraft Amateur Radio Products - SWR WATT meter manufacturer

MeterTest Ltd - Producer of meter test equipment for electricity meters testing and calibration

Kustom CB & Stereo - CB Radios, 10 Meter Radios, Base Station Radios, Amateur Radios, Wilson, Firestik, Monkey Made, Striker Antennas, Cobra, Uniden, Galaxy, Connex, Magnum, Ranger, General Radios in Phoenix, AZ

2 Element beam designer - This is a DOS program that will design a 2 element beam for a given frequency. The gain is about 6db's the front to back ratio is about 10 db's. The SWR will be about 1.8 to 1, so for transistor rigs a tuner is needed The only information required is the freq in MHZ..

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