Hy-Gain DB-1217 Instructions manual

308 Industrial Park Road

DB-1217

Starkville, MS 39759 USA

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INSTRUCTION MANUAL

Duo-Monoband Beam 7 ­Element, 12 and 17 Meter

General Description

The Hy-Gain DB-1217 is a 7 element, 2 band
beam antenna designed for operation on the 12
and 17 meter amateur bands. The DB-1217 uses
Hy-Gain's unique Para-Sleeve driven element,
monoband reflectors and directors, and Hy-Gain's
rugged boom-to-mast bracket. The DB-1217 will
mount on a standard 2" O.D. mast and can be
rotated with Hy-Gain's CD-4511 or HAM-IV/V
rotators. All hardware is stainless steel.

Hy-Gain's Para-Sleeve* driven element and the
monoband parasitics allow 3 element monobander
performance on each of the two bands! In
addition, the DB-1217 includes assembly
dimensions for either 12/17 meters or 10/ 15
meters! The DB-1217 is designed to survive 115
MPH winds with no ice and 80 MPH winds with

0.25 inch radial ice! This antenna also features a
4 piece boom and a 49" (1.24m) shipping
container - ideal for DXpeditions.

*References: U.S. Patent Number 4,604,628. "The Open-Sleeve Antenna", CQ Ma gazine, Vol. 39, No.
8, August 1983, Pages 13-19. The ARRL Antenna Book, 16th Edition and later, "The Open-Sleeve
Antenna", Multiband Antennas Chapter.

Preparation for Assembl

y

FOR OUR OVERSEAS C USTOMERS: T he
United States uses American units of
measurement. Please see page 8 of this manual
for American-to-Metric conversion. Most
illustrations include both American and Metric
dimensions.

When unpacking your antenna, check inside of all
tubing for smaller tubes. To conserve space and
protect parts, these parts are packed this way.
Check all parts against the parts list to ensure
none are missing.

Choose a large, clear area to assemble your 1313­1217 antenna. The area must be at least 14' x 30'
(4.3 m x 9 m). You may wish to use a temporar y
mast to support the boom during assembly.

All tubing supplied with the D13- 1217
telescopes together. Make all measurements to
the given dimensions, plus or minus no more than
1/8 inch (3 mm).

Assemble the two cast aluminum brackets (Item

1) on your temporary mast about 4 feet (1 m)
above ground. Secure the two brackets together
using the two 5/16"-18 x 3" bolts, nuts and
lockwashers. Tighten these two bolts evenly until
the brackets are snug.

Attach the boom assembly to these two brackets
using the four 5/16"-18 x _5" bolts, nuts and
lockwashers (Items 35, 38 and 39). Tighten these
four bolts just enough to hold the weight of the
antenna.

Assemble the remaining two boom sections (Item

7) to the ends of the assembled boom using 1/4"­20 x 2 1/2" screws, nuts, and lockwashers.
Tighten securely.

Assembly of the Boom

Select the boom-to-mast clamps (Items 5 and 6).
Loosely assemble them on the drilled ends of the
two boom sections (Item 8) using the 1/4"-20 x
3/4" bolts, 1/4" nuts and lockwashers (Items 41,
44 and 45). Secure the boom to the bracket using
the two 5/16"-18 x 2 3/4" screws, nuts and
lockwashers (Items 37, 38 and 39). Tighten these
six bolts securely.

Figure 1 Boom-to-Mast

Element-to-Boom Brackets

p

y

There are three sizes of element-to-boom brackets
supplied. The largest (Item 4) has a 1 1/2" I.D.,
and is used only on the 17m driven element. The
medium-sized brackets (Item 3) have a 1 1/4"
I.D., and are used on the 17m reflector and
director elements. The smallest brackets (Item

11) have a 7/8" I.D., and are used on the all of the
12m elements.

Assemble the brackets as shown in Figure 2 and
position them on the boom as shown in Figure 8.
It is easier to assemble the brackets on the boom
at the correct location, rather than try to slide
them on the boom. If you are going to leave this
assembly unattended for more than 15 minutes,
we suggest that you tighten the eight (8) bolts on
each bracket, so that they do not vibrate off. Do
not tighten the two (2) anchor bolts (Item 40)
until the elements are installed and aligned.

Figure 2 Element-to-Boom

Tubing Clam

Select the proper size tubing clamps as shown in
Figure 3. When installing the clamps, place the
clamp near the tube end with the top of the clamp
over the slot in the tube as shown. After
adjustment of the tubing lengths, tighten the
clamp with a 5/16 inch (8 mm) nut driver until
the tubing will not twist or telescope. DO NOT
overtighten!

Figure 3 Tubing Clamp

Assembl