Hy-Gain DX-88, Инструкция по эксплуатации

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ATTACHING THE
TRAP ASSEMBLIES
Slide the bottom end of the 30 meter trap into
the top end of the 17/20 meter trap assembly.
Dimension H will be set later on in the
instructions. DO NOT tighten now.
DC SHORTING COIL
The VSWR on the 40 and 80 Meter bands may
be improved by the construction and
installation of a matching coil. This coil will
also provide a DC ground for the antenna,
which may help to prevent precipatation
static. This coil is included in the GRK-88
Select the 11/4" x 61/4" slotted tube splice
(Item 6), and the two #16 tubing clamps (Item
23) . Assemble as shown in Figure 8. The
bottom of the 17/20 meter trap assembly and
the top of the 10/12/15 meter trap assembly
should meet within this tube.
Tighten both tubing clamps securely.
Select the 13/8" x 9 3/4 drilled tube splice
(Item 7), four # 10-24 x 13/4 inch bolts (Item
25), four #10 lockwashers (Item 33), and four
# 10-24 hex nuts (Item 28). Assemble this
tube as shown to join the bottom of the
10/12/15 meter trap assembly to the top of the
80/40 meter tuning assembly. Tighten all
hardware securely.
Select the base assembly and attach to the
bottom of the 80/40 meter tuning assembly
using two 10-24 x 13/4 inch bolts (Item 25),
two #10 lockwashers (Item 33), and two # 10-
24 hex nuts (Item 28). Tighten all hardware
securely.
NOTE: The long 80/40 meter tuning
capacitors and the 10 meter capacitor may be
loosened and rotated to allow assembly or
prevent mechanical interference problems
between them and the 10 meter capacitor.
Tighten all hardware securely. See top views
in Figure 12.
A coil consisting of 9 or more turns of No. 12
insulated copper wire should be wrapped on a
1 inch diameter coil form and connected
between the radiator and the ground (shunt).
If this antenna is modified to operate on 160
meters, this coil may be replaced with another
coil of the proper value.
Figure 10
DC Shorting Coil