toroid fed vertical

IK1ZYW Vertical antenna - A vertical antenna for stationary-mobile HF-VHF operation. It works on 2-6-10 and 12 meters band.

W7IUV 160 Meters vertical  ^pop - 90 foot tall top loaded vertical for 160 meters

20m delta loop  ^pop - This antenna is fed for vertical polarisation, to give a low angle of radiation for DX and also a nearly omni-directional radiation pattern

Cedevita-20 Antenna - The Cedevita-20 is a hybrid monoband antenna, the result of merging the radiator of a shortened vertical with one element of a dipole. It fits on most balconies and must be hung from the ceiling. By ik1zyw Paolo Cravero

7Mhz Vertical antenna  ^pop - The secret with this antenna is to install as many radials as you can around the base of the antenna, they can be anything from 1/8 wave or longer.

7 MHz Vertical antenna  ^pop - 7 MHz Vertical antenna for ham radio - 40 meter band in spanish

A dipole for 6 meters band  ^pop - Six meters band dipole horizontal or vertical

80 Meter vertical Loop - An 80 meter band vertical loop antenna setup at PA3FUN

A Vertically Polarized Delta Loop for 40m  ^pop - Practical contruction and designing notes of a delta loop for the 40 meters band

EH antennas and CFA antenna - Many antennas function because of common mode currents, rather than working in spite of them. Two popular examples are CFA and EH antennas. Another recent example, appearing in Antennex's compact antenna articles, is a thick stub "vertical" with no counterpoise.

End-fed vertical j-pole and horizontal zepp vertical - There are many incorrect ideas and claims surrounding end-fed vertical antennas (like the I-Max 2000), end fed horizontal antennas, Zepp, and J-pole antennas. This article describes it.

G5RV multi-band antenna - Multi-band centre-fed antenna capable of very efficient operation on all HF bands, specifically designed with dimensions which allow it to be installed in gardens and other open spaces which accommodate a reasonably-straight run of 31.1m (102 ft) for the flat-top standard model.

The G5RV Antenna System Re-Visited - The original G5RV antenna system consists of a center-fed horizontal 102' wire plus a 34' length of open-wire 525-Ohm feeder. Louis Varney, the antenna system's developer, intended two other features. Learn more at Cebik website

Modified Buddipole for 40 to 10 Meters - This is modified version of buddipole antenna, using vertical wires instead of telescopic ends by ks7j

Antenna Polarization notes - Antenna polarization is a very important consideration when choosing and installing an antenna. Most communications systems use either vertical, horizontal or circular polarization. Knowing the difference between polarizations and how to maximize their benefit is very important to the antenna user.

9 band vertical HF antenna by RW3XA  ^pop - Simple vertical radiator with matching box. No traps, no tuner required.

BFRR - The Belarussian Federation of Radioamateurs and Radiosportsmen (BFRR), the member society of International Amateur Radio Union (IARU). HQ is based in Minsk city, Belarus

RadioExam.org Amateur Radio Exams - Exams on this site are for Amateur Radio licenses issued by the US Federal Communications Commission, and are only valid in the United States and any other locations under FCC jurisdiction

Rybakov antenna by IV3SBE - Multiband no traps vertical antenna 80-6M

KVK Antenna Systems - The manufacturer of the NuBeam, Vipole, and the multi-band Quad-Folded-Dipole (or QFD for short) antenna. Also have a unique multiband vertical which can combine operation on multiple HF frequencies as well as provide high gain on 50, 144 and 438MHz in a single antenna.

eBay Store - ON Antennas J Pole - Buy ham amateur radio, antenna, j pole items from ON ANTENNAS J POLE eBay Store. We sell ham amateur radio, stealth wire, 2 meter, vertical items on eBay.

WD6CNF DSP Filter - Audio Digital Filter, two bandpass filters, three notch filters, two noise filters graphical setting of filter center frequency and bandwidth Drag vertical lines on top of signal, Microphone input, speaker output Mono, 5 kHz bandwidth

FT100 XE2NLM - Another radio control softwrare for the Yaesu FT 100 by Federico Batarse, XE2NLM

Assessing unknown Ferrite Toroids - Ok so you have had a good day at the Rally and you have come back with a carrier bag full of ferrite toroids that "just might be useful for something". How do you find out what they are? Very few seem to be stamped with any indication of their properties, and some are 'painted' garish colours which presumably means something.

QRM and noise reduction Priority listing - You will find on these pages my experiences and results on antennas and local/non-local QRM/noise reduction. Using a broadband vertical active magnetic loop and a home made / designed broadband amplifier. Two vertical magnetic Alford loops are used in an array. Analog and Digital Signal Processing and a dual phase coherent Software Defined Radio (SDR) are used. By PA0SIM