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Petlowany Antennas by K6NO - WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length

Shortened dipole for 10 & 40m bands - A shorten Dual-Band Dipole with overall length of about 11 m. For this antenna traps are substituted by inductors, in order to cover the 10 & 40 m. Bands.

Trapped dipole for 40 80m - I0SJC trapped dipole for 40 and 80 meters, traps done with 170 turns 1 mm diam, on a 3.2 mm cilinder in Italian.

An Improved Multiband Trap Dipole Antenna - This improved multiband trap dipole introduces a new trap design and a change in trap location. The antenna features double-coaxial-cable-wound traps having lower reactance and a higher quality factor (Q) than earlier coax-cable traps by W8NX

Two-Wire Transmission Line - 2 wire transmission line explained

[TowerTalk] Coax Vs Open Wire Line - Discussion at towertalk about coax cable feed lines vs Open Wire Lines

Easy tuning an building of traps  ^updated - A new and simple method for tuning traps. You need 2-3Watt of your TRX and two homemade coupling coils by DK7ZB

IC706/FT817 portable whip antenna - Suitable antenna for owners of an IC706 or FT817, 857 and other HF portable transceivers. You can an be QRV in a few minutes on all ham-bands from 80m to 6m and even on 2m by PA0FBK

Another vertical antenna for 30, 40 and 80 meters - This article is to describe a multi band DX-dedicated antenna offering a minimum of compromises (such as lossy traps), for the hams not having any high-support

FBK 2/70 portable coax antenna - A small antenna for 2m and 70cm

Ferrite receive antenna - A very compact receive antenna made with ferrite bars by PA0FBK

PA3HMP Antenna Traps - An original way to build antenna traps

Traps for 40/80 m dipole - I6DVX article on hoembrewing traps, using vetrnonite instead of common coax cable.

Building traps with coax cable - Tips on how to build a trap using common coaxial cable and coax trap software, by F5JTZ in french

FBK portable mini tuner - Tunes symmetric/coax/longwire antenna's between 1.8-50MHz

K8CX QSL CARD GALLERY - QSL Cards from ALL 338 DXCC Entities, deleted countries QSL Cards, other interesting cards

PMR446 - Resource center - PMR446 LPD433 SRD860 Resource site for PMR 446 users mostly in french

Calgary Ladies Amateur Radio Network. - The Calgary Ladies Amateur Radio Network, known as CLAN, is an independant organization whose goal is to foster knowledge and growth within the Amateur Radio Community.

Digital Operating Modes - Description, frequencies and sound samples of most popular amateur radio digital modes by DG8FBV

K6MDD Mt Diablo D-Star - Mt. Diablo D-Star System is situated on the North peak of Mt. Diablo in California's East Bay 33 miles east of San Fransisco. At 3,600' the K6MDD System has excellent coverage of most of the Bay area !

Radio Frequency Beacon Finder - This project is a radio frequency receiver that will help the user the trace the direction and distance of transmitter beacon(s) operating at 433MHz frequency by Cornell Univerity

Adur Communications - Specialist in the design and supply of Radio Communications Equipment and Systems. West Sussex England. Antennas, traps and baluns inline isolators, Outbacker Antennas, Mobile Mounts and Accessories

Freakin’ Beacon Setup Program - A small program to simplify changing messages in the Expanded Spectrum Systems Freakin' Beacon controller. The program makes it easy to modify an existing message or to have multiple messages available in different files ready to program into the beacon controller.

An RF step attenuator - Make your own rf step attenuator

New Generation Beacon Driver - As used on the new GB3VHF 144.43MHz Beacon