40m windom

40m & 80m portable wire antenna - G8ODE antenna project, where the 40m & Short 80m antenna was deployed as a sloping wire antenna using the 10M fibre glass fishing pole and a hook on the house's gutter-board

Vertical Antenna for 7 MHz - DF9CY experience on a vertical antenna for 40 meter band

40m Mobile Antenna - A mobile antenna for 40 meters band by G4DCH

3 Elements 40m full size U Antenna - 40 m three elements U antenna at 25m hight.

N3OX Flex Vertical for 40m - N3OX three meters Flex Vertical, a Short, Frequency Agile Vertical for 40 meters

Parasitic Delta Loops for 40m - 2 element 40 meter parasitic delta loop antenna by PY4VE

A 4:1 Air-wound Balun - 40mm diameter grey PVC pipe with a length of 9.5cm

80m / 40m Dipole - Build instructions for the 80-40 dipole antenna including Ugly Balun 40m trap and 80m Dipole

A Junkbox Multiband Bugstick - A junkbox bugstick for 20m, 17m, 15m, 12m, and 10m bonus at the bottom a junkbox bugstick for 40m

HF Antenna - 6m to 40m - G8JNJ Fat-Max HF Antenna - 6m to 40m - a poor man’s Steppir

G7FEK Limited space antenna - A small antenna for all amateur bands, including 80 meters, and in a small garden without the compromise. An ideal replacement for those half size antennas such as the 1/2 size G5RV and Windom 40

Multi band wire antenna - The off center fed dipole or Windom antenna.

Vertical Dipole for 40 Meters band - A lightweight portable vertical antenna for 40m

Duoband DK7ZB-Yagis 2m and 70cm - These Yagis cover the range of 144-146MHz on 2m and 430-440MHz on 70cm. They can be used for alle modes (FM and SSB/CW). On both bands the SWR is good across the whole band.

Vertical Dipole 10-40m - A multiband vertical dipole antenna by ON4BAI

HF Blaster - The antenna is designed to cover 40M through to 10M meters, mounted on a fishing pole and a 4:1 balun by 2E0SDR

S9V 40M vertical antenna - A fiberglass-wire vertical antenna for 40 m band by WY3A

Build Windom Antennas - This article by EA4FSI explain how to plan and build your own windom antenna

ZA/F4DTO - F4DTO/ZA and F4GFE/ZA Albania 2 to 16 April 2011 40m to 10m

Moonraker 4 Antenna manual - English manual of the AV-140Moonraker 4 antenna

Elecraft K2 - Narrow Bandpass Filter - This note covers narrowing the K2\'s 40M bandpass filter to cover the narrower 40M band and reject strong out of band broadcast interference

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

The Rock-Mite CW Kit - The Rock-Mite is a 40m CW kit offered by Small Wonder Labs . It features built-in keyer, direct conversion receiver with a crystal RF bandpass filter, 500 milliwatts of power, and switchable frequency offsets to work around QRM

A 40 meter QRP Transceiver - A 7 MHz homebrewed QRP transceiver project with full schematic and detailed pictures by DL5NEG

40 m Band Direct Conversion Receiver - Practical and usable direct conversion receiver for the 40 m CW band