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DSE3-50 Rev 6/20
9. Install supplied plastic caps on ends of tubing.
10. Place the boom-to-mast plate against the boom at the marked center line (Step 1) and from the
Boom-to-Mast hardware bag,
use two ¼” U-bolts, ¼” flat washers, lock washers and nuts. Tighten
the four ¼” nuts, making sure the boom-to-mast plate is perpendicular to the elements.
11. This completes the antenna assembly. Using the dimensions shown, the SWR below 50.4 MHz
will be 1.3:1 or less. If you wish to improve the match, support the antenna at least one
wavelength above the ground (about 20 feet). Check the match using a directional wattmeter or
antenna analyzer. You can move the shorting bars in or out to change the match on the antenna.
Always use coax in multiples of one half wavelength when testing to ensure you are seeing the
real match of the antenna.
After completing your match adjustment, or if you don’t want to adjust,
tighten the four nuts on the shorting bars.
DO NOT, UNDER ANY CIRCUMSTANCES, APPLY ANY TYPE OF SEALANT OR COATING TO THE
DRIVEN ELEMENT, T-ARMS OR CONNECTOR ASSEMBLY, OTHER THAN KRYLON
®
CLEAR COAT. ANY OTHER COATING WILL ADVERSELY AFFECT THE SWR AND VOID YOUR
WARRANTY.
Directive Systems
Warranty Policy
All Directive Systems antennas are built with the finest materials available. We take great pride in
building a quality product that will give years of good service and performance. If there is a defect in materials
or workmanship within 90 days of purchase, Directive Systems will repair or replace the defective part, free of
charge, to the original purchaser.
DO NOT RETURN ANYTHING WITHOUT PRIOR AUTHORIZATION FROM
DIRECTIVE SYSTEMS.
Please contact us either by phone or email describing the problem and we will resolve
your problem.
If, after examining a new antenna you received, you are not satisfied, contact us immediately for return
authorization and refund.
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.
