short 20m yogi

VK2ABQ Mini-Beam - A compact beam antenna that can be built At home, construction details for the 20M (14Mhz) version

A 30/40 meters band vertical anetnna - A shortened 30/40 meters band vertical antenna in italian

Shortened vertical antenna for 7 Mhz - A simple drawing of a shortened antenna for 40 meters by using a PVC tube

VE7CA portable tribander yagi - 30/17/12 and 20/15/10-Meter Tribanders and a 40 meters inverted V wire yagi antenna

Another Ugly Choke Balun - A home made balun build using a short length of 4 inch drain pipe and 18 foot of RG58 by G4APL

Short 40m dipole - The GM4JMU Shortened 7Mhz Dipole

The Galaxy dipole - A very short dipole with a good radiation efficiently plus a respectable bandwidth by S. C. Chuck Smith, WA7RAI

Multiband HF antenna - A multiband hf antenna for restricted spaces covering 80 40 20 15 meters Based on the VK2ERG shortened 80M dipole

Shortened G5RV - A shortened G5RV antenna design

Vertical antenna for Vacation - Vertical Vacation Antenna for 80, 40 and 20 Meter-Band, by Herbert OE3BMB This antenna is a full size λ/4 for 20m and 40m band, and a shortened λ/4 for the 80m band. Generally on the 40m band the SWR is under 1,6. In 80m and 20m band at the resonant frequency the SWR is about 1,1.

Short Whip Antenna Tuner - Here is a circuit that will resonate a short whip antenna for the HF Bands.

Antenna Tuning Units for better reception - For good Short Wave reception long aerial really is required to dig those distant stations out of the ether.

Shortened antennas - Drawings of shortened antenna for indoor usage, using short pvc tubes for 2 , 20 and 40 Mhz by f1rfm

OK0EU QRP Beacon - OK0EU is short-wave QRP beacon set up by the OK QRP Club and supported by the Institute of Atmospheric Physics of the Academy of Sciences of the Czech Republic (UFA).

Shortest Vanity Callsigns - This is a service for finding the shortest available vanity callsign in your amateur radio class. It filter through all possible callsigns and provide just the unused ones weighted by their length in morse code or their actual number of letters.

10-10 International - Ten-Ten International Net, or 10-10 for short, is an organization of amateur radio operators dedicated to maintaining high levels of amateur radio communications on the 10-meter amateur band (28.0-29.7 MHz).

condiglist : Lista Conexion Digital - A mailing list in spanish to exchange shortwave dx i nformations

GlobalTuners - GlobalTuners provides access to remotely controlled radio receivers over the internet. You can listen to ham radio, shortwave radio, air traffic control, airband, ACARS, airports and much more. Tune remotely controlled receivers from all over the world with your browser and listen live.

G0HWC's SSTV site  ^updated - Amateur Radio and SSTV Pasokon EZSSTV RAdio HAM Saw Proskan W95sstv Win95sstv Ham Software Radio MMSSTV shortwave listener Hamcomm interface Slow Scan Television Help with setting up SSTV website. G0HWC

RF Circuit design basics - Ebook by Akira Matsuzawa Tokyo Institute of Technology, Building blocks in RF system and basic performances, Device characteristics in RF application , Low noise amplifier design, Mixer design and Oscillator design

FT-817 QST review - Yaesu FT-817 and MFJ-616 speech intelligibility enhancer product review & short takes columns from QST Magazine

Shortwave Listeners Delight - a comprehensive listing of both Military and Civil HF networks from Australia and it's surrounding neighbours as well as from countries around the world.

Shortwave Central - Here you will find broadcast, pirate, and clandestine information including loggings, QSLs tips, and last-minute news

Shortwave Converter - This is a simple circuit that when placed near an ordinary AM broadcast radio will allow you to receive international shortwave broadcasts in the 5-6 MHz band

HF software digital modes for linux - This software allows a standard PC soundcard to be used as a shortwave data "modem". The whole processing is done on the main processor CPU. Support RTTY Amtor (Sitor) and Pactor 1 by Thomas Sailer, HB9JNX/AE4WA