20m discone

Capacitive Antennas - HB9MTN Capacitive antennas for 40m, 30m AND 20m

Discone for HF bands - 80 feet tall Discone was built by Collins Radio Company in the early 1960s

20 meter mobile antenna - How to make a 20m mobile antenna from a 2m whip by G4DCH

7 elements OWA Yagi for 20 meters band - Optimised Wideband Array with low SWR across the whole of 20m with excellent gain and F/B. European and USA sizes

20m 3-Element Yagi Plans  ^updated - Plans for building your own 3-element beam for use on 20m at DX Engineering

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

A new stacked multiband dipole array - A new multiband version of the lazy-h for 10, 15 and 20m. No tuner needed.

QRP Inverted V Dipole antenna - An homemade QRP Inverted V dipole antenna for 40 20 17 and 15 meter band

QRO End Fed Half Wave Antenna Coupler - A 40m through 20m QRO End Fed Half Wave Antenna Coupler by Steve Yates - AA5TB

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

80-10 m multiband wire antenna - G8OFZ multi-band antenna for 80-10m, this antenna appears to be a derivative of the Doublet and the Classic G5RV

20m,15m,30m Minibeam - Homebrew a multiband Yagi beam for 20 15 and 30 meters band by G4DCH

Farapole homemade vertical antenna - The FARAPole, a portable vertical antenna for 6 through 20m by WA1GPO

DXpedition Antennas for salt water locations - Which is better a 20m antenna for an island DXpedition: Yagi at 25', or a vertical or two on the beach?

QRP Antenna Tuner for 20 m - A small antenna tuner for 14 MHz

MT-3000A Modification - Article on the Dentron MT-3000A antenna tuner and some good modifications by W1AN

DXpedition Antennas for Salt Water Locations - A study on 20m antennas by Kenny Silverman, K2KW

20m live PSK stream Priority listing - Listen to a live PSK 20m stream from station G7AQK - Located in London, UK

GAP Titan Product Reviews - Covers 10m 12m 15m 17m 20m 30m 40m and 100 KHz on 80m, & WARC Eham Reviews

Free Band mod for the VX-6R - Free Band modification for the Yaesu VX-6R

NCDXF Beacon for Android - NCDXF Beacon is a simple tool to monitor the NCDXF beacons on the Ham Radio bands 20m, 17m, 15m, 12m and 10m. Upon start the the time will be synchronized with an NTP server.

20m CW Transceiver - Homebrew 20m CW transceiver by MINOWA, Makoto 7N3WVM

QRP AM CW transmitter - A simple low-power broadcast-type circuit, using a crystal oscillator integrated circuit and an a collector modulated AM oscillator

QRP transmitter with VXO - This is a nice 1 W QRP transmitter that can be used in combination of one of the simple receivers.

20m CW QRP Transceiver - The direct-conversion receiver uses an audio-based automatic gain control, an LC tone filter, and a 100-kHz crystal for frequency alignment. The same VFO is used for transmitting and receiving by DC1YB