Thursday, 1 September 2011

A ground plane antenna for 2 meters... new project.

My new project will be a ground plane antenna for 2 meters like this one...


I already got the material to mount and test it.

Wednesday, 1 September 2010

JOTA 2010... CQ, CQ, CQ... CR5APN

Getting ready and prepared for the JOTA 2010...
Soon... in a radio station next to you!

Wednesday, 4 August 2010

Solar storm... propagation low!


(CNN) -- Attention, Earthlings: The sun is spewing plasma toward you, and the results could be beautiful.

Stargazers looking to the sky late Tuesday night and early Wednesday morning could see northern lights, or aurorae. According to the Harvard-Smithsonian Center for Astrophysics, the potential light show started Sunday, when the sun's surface erupted and hurled tons of ionized atoms -- or plasma -- into space.

"This eruption is directed right at us, and is expected to get here early in the day on August 4th," said astronomer Leon Golub of the Harvard-Smithsonian Center for Astrophysics (CfA). "It's the first major Earth-directed eruption in quite some time."

When such an expulsion reaches Earth, it interacts with the planet's magnetic field and can create a geomagnetic storm, the CfA said. Solar particles stream down the field lines toward Earth's poles. Those particles crash with atoms of nitrogen and oxygen in the atmosphere, which then glow like little neon signs.

Sky watchers in the northern U.S. and other countries should look toward the north late Tuesday or early Wednesday for rippling "curtains" of green and red light, the CfA said.

Monday, 21 June 2010

Portuguese Island Award - Mouchão do Lombo do Tejo


No, not a fishing rod...


Solar power... portable? Of course, we can carry this (and the batteries) and walk away!


CQ, CQ, CQ...

Wednesday, 18 November 2009

A VHF/UHF Nagoya Antenna and more...

The new acquisiton for my shack...
While I'm still waiting for some free time to build the Yagi antenna, this one will do! Pretty okay so far!


Super Magnet Antenna Dual Band
UT-108UV Nagoya Antenna

Specifications:
Frequency: 144/430MHz
Gain: 3.0db
Max power: 20 Watts
V.S.W.R: Less 1.5
Impedance: 50 OHM
Connector: BNC
Magnet size: 31 mm
Length: 510 mm
Coaxial Cable: RG-174 A/U 3M
Weight: 113g



And a very nice and handy micro/speaker from Jetfon, the JR-4009, will complete the pack I bought last Sunday at ARVM's Radio Fair!

Friday, 6 November 2009

A 2m Backpaker Yagi Antenna - my next challenge

This is a lightweight antenna designed by KD5IVP. It's simple to build and lightweight. It is for use on the 2 meter band. This video is the explanation on how to build it. It will be my next challenge...



Monday, 26 October 2009