Assembly Instructions
•
Make sure that you have all parts in accordance to the parts list.
•
Element Assembly: Locate all element traps, 16mm (5/8”) connecting tubes, and center (colored) element traps.
Mark the center of each colored element traps with a felt tip pen.
•
Assemble traps and 16mm tubes with self-tapping screws. Use some oil and take care to not over tighten the
screws. Insert plastic caps into element tips of red (reflector) and blue (director) element without issuing some
force to the traps. Put the 2 plastic caps into the short 10mm tubes at the undrilled side. Put the tubes (with the
caps to the outside) into the tips of the yellow traps (driven element), keep 10cm (4 inches) outside. For
alignment of the driven element, the distance between center trap and end traps is kept variable. use 44.88 inch
(114cm) for start-up.
•
Element to Boom Assembly: Locate the center of the boom and mark with a felt tip pen. Now go 890mm (35”) to
both sides and mark the position of the elements according to the drawing.
•
Mount the plastic element plates to the elements using the 32mm U-bolts, mounting blocks, 8mm washer and
nut. Make sure the elements are not confused and centered with the element plates.
•
Mount the element plates to the boom with 50mm U-bolts, mounting blocks, 8mm washer and nut.
•
Please Note
: The elements have to be
on top
of the boom and the drain holes in the traps must be on the
bottom
side. The connector bolts of the driven element will look upward.
•
Mast to Boom Assembly: Locate the aluminum mast plate near the yellow driven element (radiator) to the boom,
facing the side with the
red
element.
•
Mount the mast plate to the boom with 50mm U-bolts, mounting blocks, 8mm washer and nut.
•
Coax Feed Assembly: The coax is to be connected to the studs of the yellow driven element (radiator). Separate
shield and center conductor and connect to the solder lugs provided. Fix those to the bolts with lock washers and
5mm nuts. Do not over tighten the bolts, otherwise they will come up and give a bad contact inside.
•
We recommend that you seal the end of the cable and the solder lugs with silicone, tape, coax seal, or
something else that is suitable.
•
Depending on your specific environmental conditions it might be better to ground the shielded side of the coax.
In this case connect it with a short wire to the mounting plate of the yellow driven element (radiator) which keeps
the plate on the boom. A piece of copper braid from a coax can be used. Two extra solder lugs are provided, 1
ea. 5mm and 8mm.
•
You got it! Wishing you lot of DX with your new ZX-Yagi!
Tuning
•
Try to adjust the antenna at the final place of installation. Please note that other antennas or metal pieces can
affect both center frequency and SWR.
•
There are two tuning points: the variable distance between the mid trap and the outer traps (affects
all
bands),
and the tips of the radiator which affects the 20m band only.
•
First the inner distance is to be adjusted for best SWR on 10 and 15m. 2 inches difference result in about
200KHz freq shift on 10m. Perhaps a compromise is to be found, because 10 and 15m can’t be adjusted
separatly. Ignore the maybe poor 20m resonance at this stage.
•
After tuning the 10m and 15m bands the 20m band is to be adjusted with the tips of the driven element. 2 inches
difference result in about 120 KHz freq shift.
•
If in spite of a correct center frequency the SWR appears not to be good enough, we suggest to use a simple
antenna tuner.
Parts list
Boom
50mm (2”)
1
Set of Elements
3
Plastic Element Plates 195 * 95 mm
3
Aluminum Mast plate 200 * 100 mm
1
U-Bolt 50mm
10
U-Bolt 32mm
6
Mounting Block 50mm
10
Mounting Block 32mm
6
short alu tube 9.6mm
2
Nut 5mm (for coax)
2
Nut 8mm
32
Lock washer 5mm (for coax)
2
Lock Washer 8mm
32
Self-Tapping Screw 4,2x13
30
Self-Tapping Screw 3,5x9,5
2
Solder Lug 5mm
3
Solder Lug 8mm
1
plastic caps 12mm
6
plastic caps 10mm
2
MINI-2000
3-Element 3-Band Mini Beam
# 11695
WiMo Antennen und Elektronik GmbH
Am Gäxwald 14, D-76863 Herxheim, Germany Tel. (07276) 96680 FAX 6978
http://www.wimo.com http://www.zx-yagi.com e-mail: [email protected]
Deutsche Anleitung:
bitte wenden!
