Directive Systems & Engineering DSE945LYRMK Quick Start Manual

9cm loop yagi kit (rear mount)

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9cm Loop Yagi Kit (Rear Mount), Model DSE945LYRMK
Frequency range:
Number of elements:
Boom length:
Boom diameter:
Mast diameter:
Weight: (assembled)
Connector:
Quantity
Description
0.5" x 48" drilled boom
1
0.5" x 36" drilled boom
1
2
reflectors 1&2
1
driven element
11
directors 1-11
7
directors 12-18
6
directors 19-24
12
directors 25-36
6
directors 37-42
1/2" black end caps
2
Anti-Seize Compound
1
Anti-Seize Compound - Apply a small amount of the supplied Anti-Seize Compound to the aluminum joints and
to the threads of the U-Bolts to prevent galling.
BEFORE INSTALLING YOUR NEW ANTENNA, PLEASE BE SURE
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.
DSE945LYRMK Rev 12/20
Directive Systems & Engineering
2702 Rodgers Terrace
Haymarket, VA 20169-1628
www.directivesystems.com

SPECIFICATIONS

3.4 to 3.5 GHz
45
60 inches
0.5 inch
1 1/2 inches max
1.5 pounds
Type-N female

PARTS LIST

Note: All hardware is Stainless Steel unless otherwise noted.
TO READ THE ENCLOSED WARNING PAMPHLET.
703-754-3876
Gain:
3 dB Beamwidth
(E plane):
F/B ratio:
Maximum Power:
Stacking distance:
Quantity
Description
3-48 x 3/4" machine screw
44
3-48 x 3/4" split lock washer
44
3-48 x hex nut
44
8-32 x 1/2" machine screw
2
8-32 x 1" machine screw
2
4
#8 split lock washer
4
#8 hex nut
1
boom to mast angle bracket
1
boom to mast plate
1
U-bolt with nuts & saddle
1
Cable assembly w/connector
1
Assembly manual
20 dBi
16º
>20 dB
100 W average
9 inches' vertical
9.8 inches' horizontal

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Summary of Contents for Directive Systems & Engineering DSE945LYRMK

  • Page 1 Directive Systems & Engineering 2702 Rodgers Terrace Haymarket, VA 20169-1628 www.directivesystems.com 703-754-3876 9cm Loop Yagi Kit (Rear Mount), Model DSE945LYRMK SPECIFICATIONS Frequency range: 3.4 to 3.5 GHz Gain: 20 dBi Number of elements: 3 dB Beamwidth Boom length: 60 inches (E plane): 16º...
  • Page 2 SWR. If it’s less than 1.5:1 you can stop and make sure the loop doesn’t try to pop back up, sometimes you have to squeeze the loop with your fingers to make sure it stays in DSE945LYRMK Rev 12/20...
  • Page 3 #2 using the R2 hardware. The end opposite the connector is soldered to the open ends of the brass element. Allow a 3/16" max gap at the feed point. For best match, the driven element should be approximately 7/8 inches high; this makes it wider than it is tall. DSE945LYRMK Rev 12/20...
  • Page 4 This shape can be adjusted for best match. After final tune-up, it is a good idea to solder the UT-141 to the brass bolt at the bolt head. Use a large 150-watt+ soldering iron. This antenna is based on work done by G3JVL. Soldered Driven Element Note: All dimensions are in inches. DSE945LYRMK Rev 12/20...
  • Page 5 ANY ANTENNA THAT HAS BEEN MODIFIED WILL BE SUBJECT TO A RESTOCKING CHARGE. IF AN ANTENNA IS SO MODIFIED AS TO MAKE IT UNUSABLE, DIRECTIVE SYSTEMS RESERVES THE RIGHT TO REFUSE TO ACCEPT THE ANTENNA FOR RETURN. DSE945LYRMK Rev 12/20...

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