24 April 2016

QRP, Antennas and Sun

Today was a good day. Although the bands were closed I was able to test some antenna prototypes. It's amazing what can be done with 2.5W... Three out of four antenna designs worked very well! 

13 February 2016

QRP 40m to 6m OCF antenna

I am in the process of building a QRP 40m -6m OCF antenna.

I am very happy with the 4:1 Guanella balun I built with FT114-43 toroid:



2 x 1:1 current balun to form the above 4:1 guanella and a 1:1 current balun





08 February 2016

40-20-10 End Fed Antenna

End Fed Antenna ready to deploy:

20,35m length, 1:4 balun on a FT140-43 toroid and I used a 100pf capacitor 






07 February 2016

Magnetic Travel Loop

Magnetic Travel Loop with great results!



Flowerpot Antenna

Flowerpot Antenna


Big SWR curve...






08 July 2012

Home Made Multiband Dipole

Based on the W3DZZ antenna, this Dipole proved to be very efficient without Antenna Tuner on 80m, 40m, 20m, 15m and 10m bands. With ATU I was able to work on 17m and 6m bands with success.


 Orientation of the dipole regarding North. 


 One of the views from the roof.


 Detail on the 1,5KW trap


Center of the Dipole,  VHF antenna, SAT Antenna


Detail from the center Dipole with the 10M band whiskers... :)

23 May 2010

Station

The newer station.




The older station.

15 February 2010

Rybakov 806 in Action

This is my first attempt in using the Rybakov 806 antenna.

I was able to TX for 3000km only using 5 watts in the 40M band and a report of 5/5!

I was very happy with the overall performance of this antenna: multiband from 40 to 6 meters band, low SWR.

If I used a longer radial [the existing was only around 8 meters] like 10 to 12 meters the antenna will work on the 80M band.

I had the help of a LDG AT-100Pro and the internal tuner of my TS-480SAT.

I had very good reports, low noise and great for DX!

18 December 2009

My first antenna design - 40m and 20m Easy Stick




If you have any questions please ask!

12 December 2009

2009 X-Mas Project: Tak-Tenna


This is a home made tak-tenna, with great results in the tunning :)

From 7.000 to 7.200 SWR is lower than 3:1 and in the middle is 1.4:1

This was measured inside home and just one meter high.