Hy-Gain TH3-MK3 Thunderbird User Manual

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rrut
I
S6OlrNortheast
Highway
6
.
Lincoln,
Nebraska
68505 U.S.A.
Telephone:
t4O?,
467-5321 telex: Hygain
Lcn a
48-4324
EUFIOPE: 22,
rue
de la Ldgiond'Honneur
93200 Saint-Denis
-
France
Tdldohone:
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telex:
Telcodi
630013
PN 801235
,n,electronics
DIVISION
OF TELEX
COMMUNICATIONS, INC.
,wSrRUCTtOrv
ORDER
NO.
388
TH3.
MK3
THUNDERBIRD
3-Element, Ham Antenna
MANUAL
General
DescrlPllon
$peclfications
Preparation
ol Assembly
*
{-r\i
FOR
OUR
OVERSEAS
CUSTOMERS:
The
UnitedSates
uses En0lish
units of
measurement Please
see
the last
page
of this manualSassistance
in identifying
the
hardware and
components supplied with
this
prodbct
.
:i'..
;:i
.Et
4i
s
The
Hy-Gain
TH3-Mk3
is
a
three-d.iement
tri-band beam antenna
designed for operation
on
10, 15
and
20 meters. Multi-barlding is
accomplished through
the use of Hy-Gain's
all
Hy-Q
traps.
The
antenna is desig$ed to fit
a 1s/e"
(41
mm) O.D. mast
and can
be
rotated
with
a heavy
duty TV
rotator.
F
:
t
"r
$
Ebctricat
Inputimpedance.
:.....$.........
Gain.
..::::::.::f::::::::::::::::::::::::::::::::::;;it,i?"l*tr
Front-to-backratio
.....ft.:
....25d8
Maximum
power
input
. .i....
.....
1 kw AM
VSWR
(at
resonance)...
... ....t
Lightning
protection
....
t:
DC
ground
f
f;n
l;
Mechanical
B::il:l#$";
::::::::::::::g::::::::::::::::::::
:::::::::::
'11,11?3,Til1
Longest
element
.....:.9....
....2i
ft.
(823.7
cm)
Maxrmum wino
survivat.......&....
..r...
.... 100 mph
(160.93
kmph)
Net
weignt.
Accepts
mast.
. .i.Fr,
.
.
.11A" lo 2V2"
O.D.
(32
mm
-
64 mm)
Wind
surface
area
.......}]
...5.10 sq.
ft.
(0.474m2)
Wind
load
at B0
mph
...#.
t
-i
I
i
ft
(.r
The
antenna site should
Oe treeiOt large
buildings, metal
objects
or
powertines.
wARNtNc
'
i1
'',-'
When Installtng
your
system,
take
extreme cara to
avold any contact wlth
overhead
powerllnes.
Fatture to
exerclse thls
care could
result
ln
serlous or
fatal
tnlury.
There
are
two methods
of installing
the TH3-Mk3
at the top
of
your
tower.
Method
1
-
Completely
assemble
the
antenna
on the
ground
then
hoist it into
position
using a block and tackle
as shown
in
Figure 1.
-.
_
Method
2
-
Assemble
the
antenna
on
the
ground
in
halves,
then hoist
each
half
up the
lower and
assemble
in the
boom-to-mast bracket
on the tower
as
shown
in Figure
2.
All tubing
supplied
with
the TH3-Mk3
telescopes
together. Make
all measurements as
accurately
as
possible
using
lhe
given
dimensions
to
gain
optimum results from
your
antenna.
n

Hy-Gain TH3-MK3 Thunderbird Specifications

General

Brand	Hy-Gain
Model	TH3-MK3 Thunderbird
Category	Antenna
Language	English