Carmelito, te gusta esta, ?? parece mas pequeña.
En esta pagina habla mucho de esto del HF FAX, intersante
Jerry Martes, Los Angeles,
Ca, U.S.A captured some NOAA pictures with his “selfmade simple APT antenna for 137 MHz” and get some fairly good results from the antenna that he designed I'd like to get some 'recognition' for this design. It is made of 3/4 inch diameter PVC and TV (300 ohm) twin lead so the cost is somewhere around $1.00.
See
a picture of the "Double Cross" that indicates that the cross concept can be applied to APT antennas. The image is recorded with this antenna mounted on the roof of his house. Jerry has alot of data on this antenna and some drawings (actually rough sketch) and the pictures shows how this Double Cross can be built by others. For more info, mail to j.jmartes@verizon.net
http://www.hffax.de/html/simple_apt_antenna.html