periodic

K8CU Log Periodic Antenna - Plans, photos, electrical and mechanical design for this HF Log periodic antenna.

A 5 band log periodic dipole array - Modified version of the Telerana antenna which was orginially featured in the July 1979 issue of QST. The array is suspended within a framework made of fiberglass poles emanating from a central hub with the ends tied together with light weight rope around the perimeter. 10-15-20-30-40 meter band coverage

HF Log Periodic antenna - Plan for a log periodic antenna for the 14Mhz-30Mhz by F6DOP in french

Log Periodic Antenna Design  ^pop - calculates the dimensions and spacings of the elements needed to build a log periodic antenna, given tao, sigma and the lower and upper cutoff frequencies.

Log Periodic - MSDOS program calculates dimensions of log-periodic antennas by YU1AW

6 element Log Periodic for 50 Mhz - A project by G3SYC of a log periodic antenna for 6 meters band

Log Periodic Dipole Antennas: TITANEX DLPD-15 - Review of the DLPD 15 is a log periodical dipole antenna with 15 elements made with state-of-the-art technology.

Log Periodic of Another Sort - A log periodic dipole array (LPDA) antenna design that offer continuous low SWR in 13-30MHz range

Thinking about Ideal Loops - Loop antennae have been used from ELF to UHF since the beginning of radiocommunications. At low frequencies, the main problem for loop antennae is to have enough sensitivity; the antenna being very small respect to the wavelength the collected energy is also small. To increase the output level the loop may be made resonant, so loosing it%u2019s intrinsic aperiodic characteristics.

Types of multiband antennas - Types of multi-band antennas for the HF bands, from the horizontal end fed wire, to g5rv, log periodics, trap dipoles, vee beams and rhombic antennas.

Antennas for SW Broadcasters - All antennas for shortwave broadcasting, Log-periodic, Dipole Arrays, Curtains antennas, rhombics, broadband dipoles with photos and details.

URDE Navarra Spain - Web site of URDE in Navarra north Spain, a lot of news periodically update

IECARO - Inland Empire Council of Amateur Radio Organizations - The purposes of IECARO are, to provide a forum for all member organizations wherein each will benefit from the experiences of the others, To provide a vehicle for periodic sponsorship of the ARRL Southwestern Division Convention, To develop a consensus on current issues before the Amateur Community within the IECARO Service Area

KMA Antennas - KMA Antennas specializes in HF - VHF - UHF Log Periodic Antennas, unique antennas for the Six Meter band and custom antenna designs.

Tennadyne - Log-Periodic Antennas

PKW Antennas - PKW Antennas for ham radio bands, Quads, delta loops, log periodics antennas for military and professional use by Ditta Martelli fabbrica italiana antenne

Degen Design - Multi band mini quad antennas, log periodic and stacked antenna for 144 MHz and 70cm

Titanex  ^pop - Low weight Titanium Verticals, Log-Periodics, Yagi antennas, Quads, towers and antenna accessories by Titanex

DK9SQ Antennen - Walter Spieth Antennen offer, Duoband-Portable-Log. Periodic 2m/70cm, Vertical-Loop-Antenna,10-40 Meter and PortableW3DZZ-Antenna as well as fiberglass tubes

International Meteor Organization Links - Meteor societies, clubs, and projects, Observing Methods, Newsletters, mailing lists, and astrophysical periodicals

Antenna Log Periodic Design - Log periodic antenna design excel sheet file download, in italian.

Yagi-logper - Yagi-logper is a linux GPL program to model a Yagi or Log-periodic antennas with horizontal cylindrical dipoles.

QST Browser - A Mac OS X application for searching and viewing the back issues of periodicals that are published by the ARRL in CD-ROM format.

Mac Antenna Master - Dipole, Yagi, Vertical, Cubic quad, Log periodic, J-pole, coil, and transmission line design package for the Macintosh

APRS on your phone - iBCNU is an APRS GPS position reporting and text-messaging application for the Apple iPhone. When position reporting is enabled, the application will periodically send out location of your iPhone using either 3G or WiFi network and iPhone's built in GPS receiver