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  1. I'd never found a good feed for DEEP DISHES ( i have a 1,26 m , 0.31 m deep dish F/d 0.25 ) THIS IS IT This brasilian colleague designed an small patch for 432 MHZ satélite double polarization (i only needed ONE) What's most important to me are the 180 degrees of illumination at about -6 db of gain... -6dB beamwidth of around 180 deg (good for f/D ratios 0.25 (focal plane dishes) to 0.3) -6dB in beamwidth corresponds to a -10dB edge illumination (max gain) since there is an additional -4dB spreading loss to the edge at these low f/D ratios. the coax is running inside a graphite tube (all i have at hand from a broken arrow) center of patch and coming back from behind