phased vartical 40m

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

40m delta loop  ^updated - Building a 40m (7MHz) horizontal delta loop

LFA Antenna for 40m by YO2MBU Priority listing - LFA 2 elements Loop Antennafor 40m by YO2MBU

A Feasible Full Sized 40 Meter Beam - An antenna project for a beam antenna for 7 Mhz

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

4 Square antenna for 80 meters - Four phased vertical antennas on 80 meter band

Convert 40m 2-element to a Phased Drive Array - This presentation details the work of converting a 40m 2-element reversible beam antenna into a phase-driven type of array

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

40 meter phased delta loops - N6AQ delta loops antennas for 40 meter band

Boom for phased delta loops - Antenna boom to support 40 meter phased delta loops

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

Shortened Dipole for 40 Meter - A shortened dipole antenna for 40 meter band

Inverted L Antenna by VK1OD - This article describes a simple Inverted L antenna for the HF bands designed to work on 80m, 40m, 30m and 20m

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

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

80m 40m Vertical antenna - HF2 antenna, home made vertical antenna

W8HDU 40m Vertical design - Design of a 40 meter Vertical antenna

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

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

Home Made duplexer - Homemade UHF/440Mhz Amateur Radio Repeater Duplexer

440Mhz Interdigital Bandpass Filter - Homebrew Amateur Radio 440Mhz Interdigital Bandpass Filter