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DSE3319LYAK Rev 4/21
CAUTION:
While we strive to remove all burrs from all machined parts, there is always the possibility of
sharp edges. We strongly suggest checking the edges and use a fine file, or 400 grit sandpaper,
to remove any burrs that may have been left.
(Can be up or down)
(Can be left or right)
ASSEMBLY INSTRUCTIONS
1)
Attach loops to the boom with 4-40 screws and locknuts in proper sequence. Loops go
on the side of the boom marked with an "X". The loops are bagged in similar sized groups
and labeled. Install them in order, being careful not to mix them up on the boom. When
tightening the nuts on the parasitic elements, be careful not to torque them too tightly. Snug
down the nuts, align the elements and use a screwdriver for the final tightening. A 1/4-inch nut
driver is almost mandatory for this job! Attach the driven element with the 5/16 nut provided. If
only a single antenna is being built, it doesn't matter which way the loop is oriented. If
antennas are to be stacked, see "Instructions for Stacking Loop Yagis".
2)
Attach the boom to mast plate and bracket (square tubing). Use 8-32
x 2” hardware for
BM bracket, and 8-32 x 1 1/4" hardware for attaching mounting plate to the square BM
bracket. The mounting center is D15. Install U-bolt so that the mast comes up directly under
the boom.
3)
Install the cable assembly through the hole in the driven element mounting bolt. Make
sure the connector bracket is correctly oriented, the bend should be forward for center mount
antennas and rear facing for rear mount antennas. Solder the outer shield to the driven loop
first making sure there is no shield sticking above the large hole in the driven loop. After the
shield is soldered, pass the center conductor through the small hole in the driven loop and
bend the center conductor over and solder (See Assembly Tips below).
We have created a You Tube video, the link of which can be found on our website,
documenting the following steps:
https://youtu.be/ojXbsDv5cvU
At this point the connector assembly is facing down, connect a piece of coax and your
SWR bridge or VNA. Pull down on the connector (which will flatten the loop) until you reach
the lowest SWR. If it’s less than 1.5:1 you can stop and make sure the loop doesn’t try to pop
