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)
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
Hex Beam for 6 meters
- This is a hex beam designed for six meters. It has three elements with a turning radius of 54 inches. This antenna can be built from low cost materials available from the local hardware store. By WB3BEL
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" 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.
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