gps antena

Analysis of HF Monopoles - Analysis of several monopole antennas, the differences between a perfect and an imperfect ground and effects using a ground plane made of radials or counterpoises.

Horizontal dipoles - This article describes the characteristics of an horizontal dipole and shows the results of several simulations made with MMANA-GAL, covering models for the 20 m, 40 m and 80 m bands.

Two wire broadband HF dipole - This article describes the design and simulation of a two wire broadband dipole antenna for the HF band, using the software 4Nec2. The antenna is designed to operate in the full range 3-30 MHz

Rhombic Antennas - Description and simulation of two types of rhombic antennas, using the software 4Nec2: the simple bi-directional and the terminated directional rhombic antenna

Rhombic antennas - Description and simulation of two types of rhombic antennas, using the software 4Nec2

Antenna for 1.2ghz - Circular Polarization Antenna for 1.2 GHz

Sloping Vee 470 - Article describes the design and simulation of a multiband Sloping Vee antenna for the HF band, using the software MMANA-GAL. Design with 470 ohms resistive loads. The antenna requires a 4:1 balun.

Building the T2FD Antena - Building the Balanced Termination Folded Dipole

Antena Wind Load - Information about the wind load area of many antenna manufacturers like steppir, moseley, maco, klm, cushcraft, hy-gain, avanti, Jo gunn, Wilson and winegard

Marconi Antenna - This article describes the characteristics of the Marconi antenna and shows the results of several simulations made with MMANA-GA

Build Windom Antennas - This article by EA4FSI explain how to plan and build your own windom antenna

Codan C463 multiband antenna - This article describes the design and simulation of a Codan C463 multiwire broadband dipole, using the software MMANA-GAL.

El Mundo En Nuestra Antena - Spanish Hamradio Podcast made by Arturo EA5AYJ. Also available at iTunes.

Steelbras Antenas - Antenna manufacturer based in Brazil, produce mobile HF VHF and UHF antennas and VHF UHF Base antennas

SK6AW Maidenhead Locator Conversion - Convert to/from maidenhead gridsquare, decimal or DMS long/lat. Find your locator on smartphones via gps in your browser!

Tiny Trak & eTrex GPS - Tiny Trak is a simple choice for tracking, simply by using a usual VHF and TinyTrak as APRS modem.

Tiny Track I - Tiny Track-I is a simple unit offering the transmission of your position-data (as mobile etc) in APRS , just by using a VHF and a GPS.

Global Positioning Systems - How GPS works

RFinder Worldwide Repeater Directory - The only worldwide amateur radio repeater directory. Supports Android, iPhone, web, RT Systems, CHIRP GPS enabled. AvMap, Garmin, TomTom

Microsat - Ham radio shop for APRS digipeaters WX3in1, RPTC, GSM devices, SDR software defined radio producrsa, APRS trackers and GPS Receivers based in Poland

U2APRS Android APRS Tracker - U2APRS is an APRS client application running on Google Android OS.It locates your position using GPS, 3G, and WiFi, and uploads it to the APRS-IS.

Repeater Range Android App - M3OYQ’s Repeater Range is a free application designed to run on the Android mobile phone platform. The the app listens to the onboard GPS and displays the bundled repeater database as a simple list sorted by the range.

QTH locator - Ham Radio Android Apps to displays your current QTH locator on Google Maps using the GPS or WiFi / network location.