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In a multi-element array, the internal jumpers are used to increase sensitivity at specific frequencies
or to reduce interference from strong broadcast stations.
When the
ARAV3
is used in a DX Engineering
DXE-RFS-3P
Four Square Receiving Array or the
DXE-RCA8-SYS-4P
Receive Eight Circle System, select a jumper setting at least 5% below the
frequency in use.
For Example: If operating at 1.80 MHz, multiply 1.80 times 0.95. That equals 1.71 MHz.
Select jumper configurations no higher than 1.7 MHz.
In this example, referring to
Figure 9
, use jumper L1MF. Do not use C1 jumpers.
When four
ARAV3
units are used in a four square array optimized for 160 meters and 80
meters, with 98 feet side lengths, the only jumper typically used is L1MF.
Configure all four
ARAV3
's units in the array with the same jumper settings.
The general rule is to use only L1 and not C1. For multi-band applications, use capacitors as a last
resort. Capacitors peak the response and reduce sensitivity on higher bands.
Figure 9
gives the approximate peak response frequency for various jumper settings using the
vertically configured 102" whip antenna.
Alternate Mounting
If you plan to mount the
ARAV3
to a larger mounting mast, two optional
DXE-SSVC-150P
and
one optional
DXE-SSVC-150PG
V-Clamps are required which will accommodate mounting pipes
from 1" OD to 1-1/2" OD. Refer to
Figure 10
for examples.
Figure 10
