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Discone and quadrifilar helix ?
Hi,
To pick up a 137 MHz signal from wx satellite (POES), are the discone and quadrifilar helix antennas similar, I mean, they are different in design but for the rest ? Are they both omnidirectional and are they both able to change automatically the elevation and azimuth to the satellite direction without interruption and without requiring a rotator ? or only the helix provides this capability ? Thanks in advance Thierry, ON4SKY http://www.astrosurf.com/lombry |