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A vertical monoband that's small, light and portable, needs no counterpoise and performs as well as a home antenna

A shorten Dual-Band Dipole with overall length of about 11 m. For this antenna traps are substituted by inductors, in order to cover the 10 & 40 m. Bands.

Includes EH antennas, 7Mhz vertical monopoles, 5 elements vee log-yagi for 10m and more

40 meter transmitter by K9GDT

Freeware program, special and easy to use packet program for communicating with ISS, PCSat and other 'compatible' sats. Can also be used for basic normal packet.

Tuning control of the Yaesu FT-736R multiband VHF/UHF transceiver.

Project by VE7GC

Gi7b is tube designed for microwaves but working good as HF amplifier. Idea is to build cheap, reliable HF amplifier covering 160 meters band.

Details a practical QRP wattmeter construction, leveraging a simplified SWR meter design by JA6HIC. The project focuses on a forward-only power measurement circuit, providing a functional instrument for RF power levels from milliwatts up to 5 watts. It maintains a 50-ohm input and output impedance, suitable for typical QRP transceivers and antenna systems. The resource includes the schematic for the "VSW" (Very Simple Wattmeter) and outlines a six-step alignment procedure. This calibration process involves using a known RF source up to 5W, setting full-scale deflection, and marking power increments. It also addresses minimizing frequency effects on readings with a 100pF trimmer capacitor, noting that measurement error is highest at the lower end of the scale. Construction notes mention using a piece of RG-213 coaxial cable for the inductance and coupler, with the wattmeter assembled in early 2003. The author provides an example measurement showing 0.8W into a dummy load and 1W into a 3-element beam.

The function of the calculator is to give all of the needed sizing to construct a good 5 element quad antenna for amateur radio use.

BesserNet Reflectometer is a fun SWR calculator and simulator Java applet

On 23cm the best way to obtain a good RX-sensitivity is to use a GaAs-FET in the front-end, since these devices show very low noise figures.

Two element X-Beam is a high-performance broad-band antenna that is ideal for Ham radio operators with limited space. X-Beams are inexpensive and easy to build. The performance of the simple X-beam is amazingly similar to larger, more conventional antennas by 4S7NR

A 3500kHz - 3579kHz range transceiver, output 250 mw by SP5DDJ

A VHF / UHF J-pole vertical antenna de ON6MU

A Moxon rectangle antenna for 17 and 20 meters band

A 14 elemets yagi antenna for 432 MHz based on DK7ZB design

All about amateur radio, police scanner frequencies. Frequency Listings for Kentucky, West Virginia, Virginia and others. Add your URL to the Scanner Link Page.

Circuit and software to build a beacon keyer, includes downloadable packages.

VK2ZAY end-fed antenna for 40 and 80 meter band

PA2OHH portable regenerative receiver

G3YCC article pn the W3EDP end-fed antenna for 80 to 20 meters bands

Schematic for a DIY 70 cm vertical antenna

The AMers nets from HF to VHF

A list of frequencies for ham radio operators QRP operation and with a special reference for those using the Fireball 40 a multi-band QRP TX kit

Cancelling out unwanted noise sources by DL3FP

This antenna is very useful for receiving or scanning purposes, but you can use it for transmitting, too. It is 2,94m long and has a pi-configuration (Collins-Filter) for the matching.

Interesting review about active magnetic loop antenna Wellbrook ALA 1530 and 330S by ON4SKY

The slim-jim antenna for 144 MHz

Signal Generator (VFO) with Direct Digital Synthesis by Bruce AA0ED and Craig AA0ZZ

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Small parts and kits for the QRPer

Ham radio humor and stories

A standard 6 elements design scaled for UHF application. All material used in this project are easily obtainable tubes and rods which is limited within a total budget of $18.

These yagis and groups were designed with YO7.23 from K6STI and checked with EZNEC from W7EL. With a gain of 14/17/20dBd they have a good relation between gain and mechanical problems.

2 meter or Dual Band J-pole bicycle antenna

If you find external wire antennas obtrusive for amateur radio or short wave listening, then this is the antenna for you, is just 1 meter diameter

Elelement yagi beam antenna for 2 meters band by ON6MU

Descriptions for 144-MHz- , 70 MHz- and 50-MHz-Reflector-Hentennas

Easy circuit that provide good gain to weak audio signals

N5IW ideas to build your own antenna in a restricted lot, or a stealth antenna. Includes PPT files of HF and VHF stealth antennas.

How to build a high gain vertical antenna for the UHF amateur or CB Bands, by radio experimenters handbook

What is hallicrafters? Let these photos illustrate the soul of hallicrafters. by LA5KI

2 Element Cubical Quad Antenna for 28 MHz by DL7JV in german

Tunes symmetric/coax/longwire antenna's between 1.8-50MHz

Here is the parts list and dim. sheet for a 6m Square Copper Dipole, made from copper water pipe

A coaxial cable tuneable magnetic loop antenna for 7MHz. This experimental antenna does not require a tuning capacitor

homebrew an helix antenna for 435 MHz by VE2ZAZ

Several projects which will allow you to build your own RF design test equipment.

One of the best antenna values on the market is the LightningBolt Quad. At about half the cost of a tri-band yagi, you get five band coverage with a single coax feedline and excellent performance from a light, low wind load antenna.