Hy-Gain TH-11DX User manual

5-Band
Super Thunderbird
Model TH-11DX
Instruction Manual —
|
—
hay-gqain
®
308
Industrial
Park
Road
Starkville,
MS
39759
USA
PH:
662-323-9538
FAX:
662-323-6551

TABLE OF CONTENTS
Page
CHA
PTB
sicnticw
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ckniieateneaiels
idebdiniesecuteeiaioneenttriceaten
1-1
General Description ............c.ccccccsssssessssssssssessesseseees gdestectenedesececetarcess Iutgons wen gatlca ieee aah 1-1.
PEC MIC ANON Ss scitessital ides actesttverstascecce icxstchtale delves bes seceauledasitatshsvactansatdesdesicusatiubusestevedeomiscteveceaeteens 1-1
Theory Of Operation..............cccsccscscessceseresecesseesseecesseees ere Ta er eT UT aR ene ee Rudedars 1-2
CHARTER
2
vcs
sescccecstvesspasciearnsacentotsnsceess
BS
eens
wescesa
yeu
ecusoneteaas
i
aseeeeca
yeaa
MaNelisesh
ies
ee
ee
en
ere
2-1
Pete par aliors Or ASSO EY sce w, Soa zeshceve oconeste tector ccc tea eda doatesaeteaaeo eons GlsdeLicb a eseeneean 2-1
CHA
POEL
SD
srecsscsecssdnsotvsecsceastetetnaces
acest
dik
tN
eccu
east
cosines
os
hire
Maecenas
3-1
Assembly of the Boom and Boom-to-Mast Brackets ..............:.cccsscssccssscsscsessssssccsscessssssesccsessscesceneees 3-1
Assembly of the Element-to-Boom Brackets on the Boom............ erecaieee eels s aL hai thst eetins 3-2
Installation of Tubing Clamps on Element...............cccccccssessesccsceseceseescesccssccssessecscsssccsssecsesscesscssssssees 3-3
BC Ie REA SSE BLY spies coasts sees nceahs ize At cae Sacsaet ects oeAvansiocseessveeiieasausaseteiceateean sed bsttes aust een 3-5
Installing Elements On the Boom <cccvises. sexcacaed siocecscieketece s50a5oes tutescuceutcecsdecacutesitdeledusk avedaivecsndeebeateaates 3-9
Plrasing: Tid be ASseim Bly csisce cuts oe cd osteateeasched av tte sects ecsarsans ohsdaneaghas at oeeciews ted masculine, 3-9
Boom Support Assembly ..............ccssscssccssessescececesssssesccesscseseseees Paceline ata cn a eee 3-13
6 V9 ool 5 ee ean PRO ee SEE een Pe st eR eae DMP PD OTE ree ER OTT 4-1
PEN Ma INSTA AON xs scstecsa sate Socancethe saizedc us cous vartecdoenchd cueuiesvtniesietelucasabusthatencs Gaeiee ieee ae 4-]
Installavon oma Crank-Up POW: cccciccassjesscceccesssttesesesescrsecdsaneceu lets daviesnystoeetextcn Sndbsaandenteatiasesuteenuee 4-]
OMREE EVES OF RO WETS se ccsctses casi ee pad ass cad eum es ced ened es osctods Sespteea ds icaes cates basboce oars acne nascoed lata te testes 4-1
Atiachinent Of Pee line: s.gsescicasacactesteusiceaxesacsatin tzesotes os ccesce Sessuavstnssecee secuisehel teseua rave donated ania 4-1
Attaching the Antenna to the MaSt..............cccsssssesccesesseeesensessecsecesesnsssecsccsscsecsecccceeccsaceaccresccascecesavess 4-]
TETSU PEO VECO Mi eae acc nda icesatace eu co ec ss eas acca auc eecas tse Pata Uaessts ips ve lusc eee anone cath ake: 4-2
VSWR Curves............ batguasgaceataeet a camaavees Mtcnashat cesarean Doss eosin less vbadad Nance eae vaetente eeeee eee 4-2
VOW ER CATS oo cette vo sttnve cated che uattsueasiaueadairuncetwasud saeasieodaenssaass acoead us vatgasosn deacon geceeclosstidendaates 4-3
a oF) a BO | ae erreur ee em OT DenRA ee CER INTE Tree PEST RE ENS ae Ee 5-1
CPE GAOT yeas esccqnses areas se arauetecuvereacsman er taebaecuducieses ata tet eta sale es edhe tis asked raat det 5-1
IAAI ADCS soc ctceoctlaceectysee.wsnatccececestcastect nasaususiaax Oiewlsiauyosvsnluasae conmttuastseacaaancestescuses ecu cueel audasocasauesntes 5-2
CHAPTER 6. BR als ate eal ac tah inh eras Sean ale nals iit e ad seen caus ca ete uRe cna been teas dod Masuda bvaceadsaosiacenaies 6-1
TROUDICSNOOUNG iin nteostnien laces lice data eivebsensudareete auhad car cacadcan ceva ouauacuae wa leniueaacs deat ils 6-1
AP TOUDICSMOOUM DAC NRE act 18 coke lee hh ce ha ala chenas Lyle Siete es andl ach l es rate eaten te canaasceices duane 6-1

TABLE OF CONTENTS (Cont.) |
-ii-
Page
CHAPTER
7............
mahuteanaeacunaeetes
ida
ecseuecees:
i
decses
etc
n
isp
Sea
dis
Gasset
ssveaeulhena
Vetascoassdiod
te
cuaveveneabeetedaaasates
7-1
SERVICE LEO ELON Ns coiee cei se vas decena ce es ooenna nec em ences eauee tesa seseeees voveaant dass suiaappeanPeaapeinoces ere ee aeeacnais 7-1
Converting American Measurements to MEUric .............sscessceseesscescesscseesssesscceneesecesesseceneeseseneseasensenes 7-2
Blt avid Nut SiZeS vsstgsaccesttacexedetccnncuuencatcnsvatelede steve itacuael cu aadasiestedevase coryennachaseas cassie seats tae umansoateees 7-2
Waiter Bie iaicieeciedta eo ncttteete a aca elects eee 8-1
PEE S 1S tose est casa ceaauda ase Setes ascan baal ouceeenseut ccd acuatcouusiacuesaceveecdseaucola siatghs eauseeaaaconcioacceeeeets aap eames 8-1
LIST OF ILLUSTRATIONS
Figure Page
I BOOmAG= Mast BraCKel xa, e.cciecacvecavocvennsetsciisiunatees caeeshosianeen shen doav desde tartan secpoere as eeaense eats 3-1
2 Assembly of Boom and Element Spacing ............:sssssssscssesesssecseeceececeeceeeteeseetsceeecseeeees 3-2
3 Ficment-t6- BOOM: Brackets ® oss ocac secs. ccc tesvagu daha sas ceenes Sets sceiis nha etcennspatileuectedeecneeneeads 3-3
4 Tb tee Tea 0S acces ceca scac aed awa seng sede ace ees ta od ade cE eat senses 3-4
5 Element SCcuOn: DeSCr DUO M aeicsscacsics svees sewer sesed ede ail eee eos aiees dovagatolee cantetnasetes dadteeastes 3-6
6 Exposed: Dubin o Len geis rai reste cesses aosacasensnaesteacs A saanatsNcaenveas vis AO ovations amedan suseeeaseons 3-7
7 ROPE WaMIPeNer: esc s etre ens cones ste seieas cess cosudsepnc reotlicedtacs deel es et lu gaateetaceiniCecatteaptea sdseenes 3-8
8 ap Dba, say sl esteh we cascre ds cteetcat peaysacs sbscche ba cece tenes cheesy gevGamndut yi vedaadunsspaseeeiutacoetaneteisees 3-8
9 Phasing PubeeAsse mb bys ccceisas ss deeodatenn oboe race elute arsed tials casei ex 3-10
10 20 and 17 Meter Pigtail Wire Attachment ..0....0.... ee eee eeseeecseeeseceecsssescnsseeseseaeenseeens 3-11
11 10, 12, 15 Meter Pigtail wire and Balun Attachment......0.........cecseeseseeeceeeeeeeecceceeeeneeeees 3-12
12 BOOtil SUppOlt ASSEMBLY 2c casie tice oe wieas cates roves accu coh adegeeaasancncenioassecnceoscsebessmaiuceses 3-13

CHAPTER 1
General Description
The Hy-Gain TH11DX is an 11-element, 5-band
beam antenna designed for broadband, high-per-
formance operation on the amateur 10,12,15,17,
and 20 meter bands. The TH11DX features a log-
periodic dipole driven array for all bands. with
monoband reflectors for 17 and 20 meters and
trapped directors for 10,15,17 and 20 meters.
The TH11DX is supplied with the new Hy-Gain
BN-4000 high power balun. These standard fea-
tures contribute to produce a maximum power
rating of 2000 watts continuous-duty, 4000 watts
PEP on all modes. The TH11DX also features an ~
improved wire boom support system. All-stainless-
steel hardware and clamps are used on all electrical
connections.
Specifications
Electrical:
- Band2s............. pa bedecaaealtdeecs de HacsuaauetierweclesaituaeesatiaiUeiatavcte, iaeasnanmeaneen: 20,17,15,12,10 meters
Bandwidths (2:1 VSWR)
DO INGIRE cisvestsseniier ds coccsee eee A ots ieee G cca oleae ast Vie ees: ceetdesa 350 KHz
MT ACCES sas css cece Spa scccat dea p toes t aca se dopins assesectvees dunes extane nieaveadedteaedaesene tc eeeits 100 KHz
PSCC UGE a: tecspsceedessciee nc cecaviv sien docepeet es canseec ts ansee eI ee a ton eRe caieae Seca atone 450 KHz
| 5 (=| eee oe ee eRe OE TNR EE eS Pee Re RE Td PRAT oe oR ee earn DS ONT ee Te 100 KHz
| CON 50 cic: gee Oe EMCI NEE eet SRE TERN Pd Sot et mee Nee SO UA Re ROT eo OPE ae 1200 KHz
Maximum Front-to-Back Ratio
PL UAT (cl [cl eee aoe PE SECRET Ett Pe a ORES Pee Nt a Oe SUEY B AUER MAL TARR AN TRUE UEC IENA 27 dB
DP ICU RE casero cst ed eas Sacto dcgut sods Sess satu susidece ion dn dice tausatns areates ce padnudcscatetoctdeceaeinen: 22 dB
CSAIL as dis esses Se Race css case case's tse noes ade paaacecesces beacaea ra ediea ieee scladed eats acento seek, 25 dB
DN saath pt erec sac g alge titotk cea ese nsid fe vasltos cede cute anes sian caiascoamensaeune tae stit nie eae 15 dB
MO) PEC gO asa is ta sth Ses eta te set 8 eas eas i Ra aetna acca a 19 dB
Maximum Gain
ZO TNGUEE Becec, ceca eed sex astae acaba cere cosh lee achanastca dates acu sesendoecetletestnase 8.6 dBi (6.4 dBd)
* SPT TINGUGE soucci ict ecunesd vase eilaacdes wes seaaee ces hea ocaeaaaeeeeaus et escisose Rneateveesee’ 8.4 dBi (6.2 dBd)
ES TRICUOE os scts eu oadsa canes ctaceuee eas ches ceanren tas nascent ae ee las tanec 8.1 dBi (5.9 dBd)
DG i eee pct toca tcse Somnus wese ans rations Soe wen ase 7.5 dBi (5.3 dBd)
| 101 =) (or ae eee Pie et Re price 2A mTT Da Oetker nS 9.2 dBi (7.0 dBd)
Miaximuint POWeGR 2 oscccceessscd csi caseessstacesnss esseonsarea i neaaa ny om aust Gteoweeticaeedaaeeds 2000 watts Avg.
| ; 4000 watts PEP all modes
Recommended Transmission Lines ..............sssscssssssssssssssseseseacsesesessseees RG-213/u, Belden 8267
f.
{
NOTE: Belden 9913 is NOT fecommended.
-
1-1

Specifications (Continued) —
Mechanical:
Boom
Length
.........ccscccssceseees
desteoibhcpsateGesaseres
acta
neve
Mechs
PN
tat
a2
24
feet
(7.32
m)
BOOM
IAPC
OD
5
oyachacas
cence
scdss
cacdes
slasidiceasssindactabisclsucteaGteciebesoutsnencne
Bice
2
inches
(5.1
cm)
EOMBOSt
BEC
NG
55s
fo
fae
sel
pavcutsesoh
es
sase
eccqucetectecaers
Separated
aaseecneueen
ce:
37
feet
(11.28
m)
Turning
Radius.................0....
Uindghasvh
chew
cuileduteceedwencicisetesat
A
Giiess
Dianna
aes
22
feet
(6.7
m)
PICCEPIS
WAST
acs
a
saces
oct
GhscasiNishusaccestede
easneiteseebee
soto
evesdice
1.9"
OD
to
2.5"
OD
(51
to
64
mm)
INCE
WV
SUG
sc
isso
ctices
sa
Leuwsacecsh
an
tactostenssaueierdcwas
ccsedessdte
ices
cocoscuaceoie
eee
ieestcsenitss
88
Ibs.
(40.0
kg)
Shipping
Weight
..0...........cccsssssssessseesssseesecsseeseees
esuateeSevatedee
PAE
UPS
ee
ee
98
Ibs.
(44.5
kg)
Maximum
Wind
Survival
(no
ice)
BS
ONE
chk
ar
eststen
fs
caatee
renee
noses
oc
aeeh
one
eiatsst
olla
barter
on
alesis
Ps
nants
119
mph
(192
kmph)
REIGMICNISS)
cocexssslsneaciceaanes
sdaissscletaspetates
Weta
ghiacianitine
mec
eee
ut
tea
99
mph
(159
kmph)
Wind
Surface
Area
(max)
..........ccscccscecssseccccesessescccscsscscscsscsscecesecceseecece
12.5
sq.
ft.
(1.1
sq.
m)
Maximum
Wind
Load
at
99
mphouuu.
cs
eadseceseccecsleseccssceatecessecsscsscccsesceecece
490
Ibs.
(222
kg)
Element
Tubing
Clamps...............ccccscssesscsssscescssscssscssssceccesceseecensssesesnceneseesene
All
Stainless
Steel
EAU
WAC
cnn
sfc
so
50
to
zee
hus
wsada
ce
sesuse
cubs
adh
daan
ebesendeseictGee
oie
Matador
uations
All
Stainless
Steel
OOM:
SUPDOK
ee
asacee
eer
ietidecocsiavcoradetsiediseenoen
oercasaseeascae:
0.125
inch
galvanized
aircraft
cable
SULLA
DIS
ROLAIOES
icc
scnscsiensaccesesavxou
aon
ddevoeendedetecbatasseivesivesds
Hy-Gain
HDR-300,T2X
or
Ham
IV
Theory of Operation
The TH11DX uses a 6 element log-periodic dipole
array as the driven-element array. This provides a
very low loss, high power driven array with
moderate directivity above 18 MHz. Two resonant
driven elements on 10 meters gives broad
bandwidth on 10 meters and greater F/B on 12
meters.
Separate single-band reflectors on 17 and 20 meters
provide excellent F/B. Trapped directors operate on
10, 15, 17, and 20 meters. Two of the three directors
use 10 meter traps for less inductive loading and
less loss. Directivity on the 12 meter band comes
entirely from the log-periodic array, since a director
for 12 meters would act like a reflector on 10
meters.

CHAPTER 2
Preparation
for
Assembly
FOR
OUR
OVERSEAS
CUSTOMERS:
The
United
States
uses
American
units
of
measurement.
Please
see
page
7-2
of
this
manual
for
American-
to-metric
conversion.
When
unpacking
your
antenna,
check
inside
of
all
tubing
for
smaller
parts
and
traps.
To
conserve
space,
these
smaller
parts
are
sometimes
packed
inside
larger
pieces.
Check
all
parts
against
the
parts
list
to
ensure
no
parts
are
missing.
The
hardware
supplied
with
this
antenna
is
bagged
by
thread
size
for
your
convenience.
You
may
want
to
sort
the
aluminum
tubing
for
the
elements
before
assembly.
This
makes
element
as-
sembly
much
easier.
the
following
table
shows
the
various
element
tubing
sizes
and
quantities.
Tubing
Size
Quantity
Shipped
1-1/4"
x
48"
w/insert
1-1/4"
x
35”
wiinsert
1-1/4" x 35"
1-1/8" x 48"
1-1/8" x 38"
{tx 21 1/2"
J
etxss”
merxaay
|
1/8" x 24"
7/16" x 62"
16" x 58"
_
merxsss
[6
7/16"
x
17-1/8"
|
orxes"
[a
Choose
a
large,
clear
area
to
assemble
your
TH11DX
antenna.
The
area
must
be
at
least
24’
x
37’
(7.3m
x
11.3m).
You
may
wish
to
use
a
tem-
porary
mast
or
sawhorses
to
support
the
boom
during
assembly.
A
concrete
driveway
is
an
excellent
area
for
as-
_
sembly.
If
you
assemble
this
antenna
over
a
grassy
area,
precautions
should
be
taken
so
that
hardware
is
not
accidentally
lost
during
assembly.
We
have
included
some
extra
small
parts
with
this
product,
just
in
case
some
are
lost.
All
tubing
supplied
with
the
TH11DX
telescopes
together.
Make
all
measurements
to
the
given
dimensions,
plus
or
minus,
no
more
than
1/8
inch.
We
suggest
that
the
assembly
of
this
product
be
done
over
a
2
day
period.
We
further
suggest
that
you
read
this
manual
thoroughly,
in
its
entirety,
and
then
go
through
the
manual
a
second
time
and
identify
and
familiarize
yourself
with
all
of
the
antenna
components.
Start
assembling
the
antenna
when
you
are
prepared.
A
few
hours
invested
in
the
assembly
process
will
ensure
many
years
of
satisfaction
with
the
TH11DX.
NOTE:
An
extra
page
that
contains
Figures
5
and
6,
Element
Section
description
and
Exposed
Tubing
Lengths,
has
been
inserted
in
this
manual
for
use
when
assembling
the
antenna.
If
you
live
near
a
sea
coast,
please
follow
the
additional
instructions
contained
in
the
"Main-
tenance"
section
of
this
manual.
2-1/2-2 Blank

CHAPTER 3
Assembly
of
the
Boom
and
Boom-to-
Mast Brackets
Select
the
boom-to-bracket
clamp
parts
(Item
Nos.
89
&
90).
Loosely
assemble
them
on
ends
(Item
No.
79),
as
shown
in
Figure
1.
Line
up
the
holes
on
both
brackets
and
both
boom
ends.
Secure
the
two
brackets
together
with
four
(4)
1/4"-20
x
3/4"
bolts,
lockwashers
and
nuts
(Item
Nos.
34,39,
and
38).
Secure
the
brackets
boom
ends
using
the
5/16"-18
x
2
3/4"
b
washers
and
nuts
(Item
Nos.
28,
31
Tighten
these
six
bolts
securely.
The
casting-to-
boom
bracket
(Item
No.
90)
may
deform
slightly
Assemble
the
two
cast
aluminum
brackets
(Item
No.
82)
on
your
temporary
mast
at
about
4
feet
above
ground.
A
five-footlength
of
2"
ABS
or
PVC
plastic
drain
pipe
makes
an
inexpensive
temporary
—
mast.
Secure
the
two
brackets
together
using
the
two
(2)
5/16"-18
x
3"
bolts,
lockwashers
and
nuts
the boom
to
the
two
(Item
Nos.
27,
31
and
29).
Tighten
these
two
bolts
olts,lock-
evenly
until
the
brackets
are
snug.
and
29).
You
should
drill
a
5/16"
hole
through
the
mast
at
the
center
hole
of
the
mast
bracket
and
secure
usin
g
when
the
four
1/4"-20
x
3/4"
bolts
are
tightened;
a
5/16"-18
x
4"
bolt,
lockwasher,
and
nut.
(Item
this
is
normal.
No.s
30,
31
and
29).
This
bolt
will
prevent
the
antenna
from
twisting
on
the
mast
in
high
winds.
NOTE:
See
Figure
1.
If
you
use
a
galvanized
1
1/2"
ji
schedule
40
or
80
pipe
as
a
26
-
31-29
peers
mast,
it
has
an
O.D.
of
1.9".
You
will
need
to
put
two
split
28
-
31-29
79
2
lockwashers
under
the
5/16
=
nuts
on
the
four
long
bolts.
i
eo
\S
30
-
31-29
=
(OPTIONAL)
~~
ae
27-31-29
Gr)
-_—
SH)
= at
-_—
79
Item
No. Description
26 Bolt, hex head, 5/16"-18 x 5"
27 Bolt, hex head, 5/16"-18 x 3"
28 Bolt, hex head, 5/16"-18 x 2 3/4"
29 Nut, hex, 5/16"-18 .
30 Bolt, hex head, 5/16"-18 x 4"
31 Lockwasher, split, 5/16"
89
re |
34 - 39 - 38
\
~O-~@.\
90
MAST (Supplied by customer)
(1.9" to 2.5" diameter)
Item
No. Description
34 Bolt, hex head, 1/4"-20 x 3/4"
38 Nut, hex, 1/4"-20
39 Lockwasher, internal, 1/4"
79 Tube, Boom, 2" x 79 1/2"
82 Mast Bracket, cast aluminum
89 Clamp, Boom-to-Bracket
90 Bracket, Casting-to-Boom
Figure 1
Boom-to-Mast Bracket
3-1

1 i '
.
67
68
79
62.
|!
90:
79
erat
88
67
:
J
el!
\
{
FRONT
|
ET
CA,
i
ES
EE
SS
[eSesnnsaccssssses:
REAR
24"
24"
29"
517i
T2010
24"
28"
57"
43"
ITEM
84
ITEM
84
ITEM
84
ITEM ITEM ITEM
84 884 84
20R-17R
1.092
m
a
keoews
17R-20DE
1.448
m
;
20DE-17DE
0.711
m
17DE-15DE
0.610
m
15DE-12DE
20.5"
0.521
m
12DE-R10DE
0.445
m
R10DE-R10DE
0.381
m
F10DE-15D
0.737
m
15D-20D
0.610
m
20D-17D
24"
0.610
m
Item
Item
No
Description
No.
Description
35
Bolt,
hex
head,
1/4"-20
x
2
1/2"
82
Mast
Bracket,
cast
aluminum
38
Nut,
hex,
1/4"-20
88
Tube,
Boom,
2"
x
69
1/2"
39
Lockwasher,
internal,
1/4"
89
Clamp,
Boom-to-Bracket
67
Caplug,
2"
90
Bracket,
Casting-to-Boom
79
Tube,
Boom,
2"
x
79
1/2"
Figure
2
Assembly
of
Boom
and
Element
Spacing
Attach
the
boom
and
bracket
assembly
to
these
two.
brackets
using
the
four
(4)
5/16"-18
x
5"
bolts,
lockwashers
and
nuts
(Item
Nos.
26,
31,
and
29)
as
shown
in
Figure
1.
If
you
have
problems
aligning
all
of
the
holes
in
the
brackets,
you
may
wish
to
carefully
run
a
5/16"
drill
bit
through
these
holes.
Do
not
enlarge
these
holes
beyond
5/16"
or
you
may
weaken
the
brackets.
This
will
prevent
align-
ment
problems
that
might
occur
on
the
top
of
your
tower!
‘Tighten
these
four
bolts
just
enough
to
hold
the
weight
of
the
antenna.
Slip
the
two
remaining
boom
sections
(Item
No.
88)
over
the
two
swaged
ends
of
the
assembled
boom
and
secure
using
a
1/4"-20
x
2
1/2"
bolt,
lockwasher
and
nut
(Item
Nos.
35,
39
and
38),
as
shown
in
Figure
2.
Assembly
of
the
Element-to-Boom
Brackets
on
the
Boom
There
are
two
sizes
of
element-to-boom
brackets
supplied
with
the
THIIDX
antenna.
The
largest
(Item
No.
85)
has
a
1
1/2"
I.D.,
and
is
used
only
on
the
two
longest
driven
elements.
The
remaining
brackets
(Item
No.
84)
have
a
|
1/4"
L.D.,
and
are
used
on
both
the
four
front
driven
elements
and
the
parasitic
elements.
The
largest
brackets
(Item
No.
85)
are
stam
ped
with
the
number
14,
while
the
smaller
brackets
(Item
No.
84)
are
stamped
with
the
number
13.
3-2