Hi All: Parked my receiver on 185.3 with the antenna oriented SW, which has slightly better coverage to EN53 than the NE oriention. Looks like SIW just coming through just below 185.3.....pardon my thermal drift on QRSS60.... http://i1296.photobucket.com/albums/ag19/wa3tts/m513siw_zpsecb0b7af.jpg 73 Mike wa3tts