a915_moxon_mp - MONOPULSE pair of MOXON 4-el quasi-Yagis + printed
MIST6002000 comparator, 915 MHz US ISM.

Feed spacing 200.0 mm = 0.610 lambda. FR4 1.0 mm,
2-layer, 1 oz, via-stitched. Antennas: l_drv 111.5 / l_refl 125 (retuned for 1.0 mm),
directors and feed identical to a915_moxon. The MIST coupler copper
is printed AS EXTRACTED from the uploaded STEP, ROTATED 45 deg, at
centre (3.968, 0) between the reflector inner ends; its two
0.3 mm swap vias are in the via drill file. Arm-strip copper (x -5.5..12)
flush at each reflector inner end laps the tail pours (a915_twin 'arm').
Lanes: dead straight at x=3.97, 69.8 mm each, GCPW
w 1.60 / gap 0.50 (w 1.9 microstrip across the moat).
SMA (4-leg flange, body on BOTTOM, perpendicular): pins drilled IN the
coupler pads - SIGMA (-19.31, 0.00), DELTA (27.25, 0.00);
legs solder into the coupler's bottom pads (Ø2.6 top bites, Ø3 bottom
pin keepouts). 12x M3 NPTH mounts (plate 30,+-27; behind-reflector
column -15,+-94.5/+-135/+-150; rail brackets 112,163;+-94.5).
Mask opened only at the SMA pads.
