(Araucaria) Fwd: ARLA/CLUSTER: 150 países feitos c/ uma antena dentro de casa.

[Ivan Silva]

cuidado com essas promessas...  nao esqueçam que a Europa é pouco maior que o Brasil só nela tem 50 paises...  e que ali do lado tem mais... essa mesma antena instalada aqui, vai te dar o Brasil todo talvez e uns argentinos e paraguaios sem direito a cartão QSL, kkkkkk
  Ivan - PY1YB
www.py1yb.com 
  ----- Original Message ----- 
  From: Rabelo PY2AN 
  To: LABRE-SP ; cantareiradx ; rio-DX-GROUP em yahoogrupos.com.br ; qrp-br ; Grupo Araucaria de Radioamadorismo 
  Sent: Tuesday, January 05, 2010 3:46 PM
  Subject: (Araucaria) Fwd: ARLA/CLUSTER: 150 países feitos c/ uma antena dentro de casa.



  73,
  Rabelo
  PY2AN
  Cotia-SP
  Conselheiro Estadual LABRE-SP
  MSN py2an em hotmail.com



  ---------- Forwarded message ----------
  From: João Gonçalves Costa <joao.a.costa em ctt.pt>
  Date: 2010/1/5
  Subject: ARLA/CLUSTER: 150 países feitos c/ uma antena dentro de casa.
  To: Resumo Noticioso Electrónico ARLA <cluster em radio-amador.net>



  Indoor antenna for 7 Mhz

  I’m looking to setup a hidden / indoor antenna, and i’ve found a couple of interesting articles on hidden / stealth antennas 

  This small antenna can allow hams which lack space to install an antenna for 40 meters. This project has been originally produced by F6CYV. I’m going to test this antenna in the coming weeks. I will try to setup this inside my balcony.

  According to his experience, using it form inside the apartament, european singals are all very readable, he has worked over 150 countries.

  The antenna is made of 2mm wire.

  The 2 coils are constituted by 18 turns of 2 mm wire, distance of tunrs is also 2 mm.

  The diametre of the coils is of 7,8 centimeters.

  The Feed of the dipole is done with a 75 ohms tv coaxial cable.

  A 1/1 balun would be recommand for a correct feed of the coaxial cable to the dipole.

  It is not necessary  to use a coupler, it is enough to set the length of both extremities of the dipole in order to have at 7.050 mhz a low SWR, and especially to pay attention what the lenght of the 2 sides of the dipole to be identical.


  Fonte: Sitio na Internet de Simone, IW5EDI (http://www.iw5edi.com/ham-radio/37/indoor-antenna-for-7-mhz )




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