Hy-Gain TH3-MK3 Thunderbird User manual

o rrut I
S6OlrNortheast
Highway
6 . Lincoln,
Nebraska
68505 U.S.A.
Telephone:
t4O?,467-5321telex:Hygain Lcna 48-4324
EUFIOPE:22,rue
delaLdgiond'Honneur
93200 Saint-Denis
-France
Tdldohone:
820.98.46
telex:
Telcodi
630013
PN801235
,n,electronics
DIVISION
OFTELEX
COMMUNICATIONS,INC.
,wSrRUCTtOrv ORDER
NO. 388
TH3.MK3
THUNDERBIRD
3-Element,HamAntenna
MANUAL
General
DescrlPllon
$peclfications
Preparation
ol Assembly
*
{-r\i
FOR
OUR
OVERSEAS
CUSTOMERS:
The
UnitedSates
usesEn0lish
unitsof
measurementPlease
see
thelast
page
ofthismanualSassistance
inidentifying
the
hardwareand
componentssuppliedwith
this
prodbct
. :i'..
;:i
.Et
4i
s
The
Hy-Gain
TH3-Mk3
is
a
three-d.iement
tri-bandbeamantenna
designedforoperation
on10,15 and
20meters.Multi-barldingis
accomplishedthrough
theuseofHy-Gain's
all
Hy-Q
traps.
The
antennaisdesig$edtofit
a 1s/e"
(41
mm)O.D.mast
andcan
be
rotated
with
a heavy
dutyTVrotator. F
:
t
"r $ Ebctricat
Inputimpedance. :.....$.........
Gain. ..::::::.::f::::::::::::::::::::::::::::::::::;;it,i?"l*tr
Front-to-backratio .....ft.: ....25d8
Maximum
power
input
. .i.... ..... 1kwAM
VSWR
(at
resonance)...
.......t
Lightning
protection .... t: DC
ground
f
f;n
l; Mechanical
B::il:l#$";
::::::::::::::g::::::::::::::::::::
:::::::::::
'11,11?3,Til1
Longest
element .....:.9.... ....2i ft.
(823.7
cm)
Maxrmumwino
survivat.......&.... ..r... .... 100mph
(160.93
kmph)
Net
weignt.
Accepts
mast.
. .i.Fr,
.
. .11A"lo2V2"
O.D.
(32
mm
-64mm)
Wind
surface
area .......}] ...5.10sq.
ft.
(0.474m2)
Wind
load
atB0
mph ...#.
t
-iI
i
ft
(.r
The
antennasiteshould
OetreeiOtlarge
buildings,metal
objects
or
powertines.
wARNtNc ' i1 '',-'
WhenInstalltng
your system,
takeextremecarato avoldany contactwlth
overhead
powerllnes.
Fattureto exerclsethls
carecould result ln serlousor
fataltnlury.
There
are
twomethods
ofinstalling
theTH3-Mk3
atthetop
of
your
tower.
Method
1
- Completely
assemble
the
antenna
onthe
ground
then
hoistitinto
position
usingablockandtackle
asshown
in
Figure1.
-.
_
Method
2- Assemble
the
antenna
on
the
ground
in
halves,
thenhoist
each
half
upthe
lowerand
assemble
inthe
boom-to-mastbracket
onthetower
as
shown
inFigure
2.
Alltubing
supplied
with
theTH3-Mk3
telescopes
together.Make
allmeasurementsas
accurately
as
possible
using
lhe
given
dimensions
to
gain
optimumresultsfrom
your
antenna.
n

A0-0388-C-OO2
Assembly
ol
theBoom
WARNING
When Installlng your system, take
extreme
care to avoldany contactwlth .
overhead
powerllnes.
Falture
to exerclse
thls carc could resullln serlous
or latal
lnlury.
,t,,1..'"""*-
.," .,.,
Figure
1 Flgure
2
CAUTION
Whenunpacking
your
antenna,
checkthe insideof all tubing
for parts
(clamps,
insulators,smalter
tubing,
etc.).
To conserve
space,
these
smaller
articles
are
sometimes
putinsidelarger
pieces.
Select
the
boom-to:bracket
clamp
parts(items
2and
3).Loosely
assemble
themonthe
drilled
ends
oithe
twoboom
sections
(item
8)using
the1A"'20
x3/a" boltsand
the
7a"nuts
and
internaf
lockwashers.
Secure
theboom
to
thebracket
using
thetwo
sh.a"-18x23/0"
screws,
nuts,
and
lockwashers
provided.
See
Figure3.
$r
ao-0388-8-OlJ
:dDoule, ,<
('
\g
@(D @@
Flgure3-2-

Select
the
castaluminum
boom-to-mastbracket
(item
1).Aligntheholesintheboom-to-
mast
bracket
withtheholes
in
the
boom-to-bracket
clamp.
Us:ethe
s/
'a"-18
x
5"
screws
andthe
s/ro"
nuts
andsplit
lockwashers
to
join
thebracketand
theclamp.
See
Figures
4
and5.Donot
tighten
the
screwsatthistime.
The
bracket
must
be
loose
toenable
you
to
mount
the
antenna
tothe
mast.
BOOM.TO.MAST
BRACKET AO-0388-B-014
Figure4
NOTE: The
boom-to-mastbracketshave
a hole thrcugh
their
centerstoallowsecuring
tothemastwiththe
5
/rc"-18
x31/2"bolt.ltisrecommended
thatthemast
be
removedand
an11
/32"hole bedrilledatthedesiredmast
clamp
position,
thenreinstallthemast.
lf
this
is notpossible,
the clamp will
hold
itsposition
onthemastinall
butthemostsevere
weather
conditions. t^[email protected]
tr-18 r 5' 8oLT. LocKwasHEnail tur
(tr9tcot
4 Dtocaa)
casT Alutttlx
ARACKETS
-a-6 ?6-18r2t' rcLr, LocKwAsrERo.d NUT
BOOX-TO'SRACXETCLAIP
$.-rBr!h'!olt,
LOCIWASXERod XUT
(O9lloml
d 16. tro&cta,
1.-[r 3Yt' 3o!T, -
locxwlsaEn.nd NUT
(Irplcol 2 ploc.. t
-@-o,li
Figure
5
-3-
--H
L- k-zo'1,'eorr. LocKwsHERod rur
( ltplccl 4 ,locat )
CASTING
-TO.8OOT CLAilP
IAST (Suppli.d !r curroil..l

Element-to-Boom
Brackels Select
theelement-to-boom
brackets
and
insert
lhe
%"-20
xVe"
anchotscrewsand
1A"
nuts
asshown
inFigure
6.
ELEMENT
TO
EOOM
BRACKET
Figure6
Lcioselyassemblethelarger
element-to-boombrackets
and
place
them
overoneendof
theboom.
Slide
themtoward
lheboom-to-mast
bracket.
Thiswill
bethebracketforthe
DrivenElement
(DE).
Loosely
assemble
the
smallerelement-to-boombrackets
and
slipthemoverthesame
endof
the
boom.
Thiswill
be
for
the
Reflector
element.
See
Figure7.
Looselyassemblethe
remaining
pair
ofelement-to-boombracketsandslipthemoverthe
oppositeendof
the
boom.ThiswillbefortheDirectorElement.
e
AO-O3E8-C-0t5
DO
NOTTIGHTEN
THESE
EOLTS
UIITIL LATER
(8 REOUIREO
PERERACKETI
IVEIIELEIIENTERACKET
REFLECTOR
ELETEI{TERACKET
o
Q to Boot
-ro-rrAsr
BRA.KET
Figure7
-4-
t$: ORIVET€L€IEf,'
If,SULATOR
MVEN ELEMENTDETAIL REFLECTOR-
DIRECTOR
DETAIL
l,:'<' _l

Compresslon
Clamps Usethe
compressionclamps
inthe followingmanner:
Take
carewhenmeasuringthe
tubing
lengths
for
your
mode
oftransmission.
Place
theclamp
near
theendofthetube
with
the
joint
evenwiththe
slot.
Tighten
theclampuntilthe
innertubecannotbeturned
in
theoutertube.
One-halfto
three-quartersfurther
turnon.thecompression
screw
will
provide
asecure
electrical
andmechanical
connection.
Duringthereadjustment
or
disassembly
thetubescan
beseparated
by
removalofthe
clamp.
Thetubes
canlhen
be
separated
and
thecompression
clamp
reinstalled,
CAUTION
Do not
overtightenthecompression ctamps.
NOTE:
To
savetime,loosely
assemble
allofthecompressionclamps.andtheir
appropriatehardware
before
beginningfurther
installationoftheantenna.
rA-oooo-A-oot
L- #
)
--tt
.l
-rrj
to-lu' HHBoLT
#IO SQUARENUT
#la
rFro-tli'HH BoLT
i'f IO SQUARE
sLoT rx PtP€ lltct|€o
w|lH --
c€rtER of cLAxP
OPEilIXG
KF!
)-t"HH
BoLT
I
SQUARE
NUT./
COMPRESS
ION
Figure
-5-
#lo-l"HH
CLAMPS
-..,:--::---.=

--i--Ttn3m$sJonModes
Assembly
of
theRellector
Determinewhich
modeof
transmission
you
will
use-either
phone
orcontinuous
wavei:
(C{).'Dimensions
forbothare
shown,
liutonlyone
mode
must
be
used
throughoutths:i.
assemblyof the antenna.Trying
to Use'phone
dimensionson oneband
andCW*;,1"
dimensionson
anotherbandwill
give
less
thanoptimumresultsonboth.
Thetypical
VSWRchartsshown
inFigure
9will
help
you
todecidewhichmodeisbest
for
your
use.
AO-0388-A-OO5
VSWRCURVES
These
VSWRcurves
aretypicalforthis antenna
mounted70 feet abovethe ground, horizontally
polarized.
Similar
curvescan
be
expected
forthis
antenna
mounled
belween30and100feetabove
the
ground.
DONOT
TRYTOTUNE
THIS
ANIENNA
FOR
LOWVSWRATGROUND
LEVEL.
tttor".
r*to#t"o*r,'tto
Figure
9
NOTE:The
followingstepscoverassemblyofonlyonesideof
the
antenna,
Theywill
havetobe donefirst
for
one
side
andthen
reoeated
fortheotherside.
Checktoseethatalltheelement-to-boombrackets
will
lie
horizontalwhen
the
antennais
mountedon
your
mast.Dothisbyobservingthe
position
oftheelement
with
respect
tothe
boom-to-mast
bracket.lv4akeanyadjustmenis
necessary,
keepingthecenterofthe
bracket2/a"lromthetip
of
the
boom
thentightentheanchor
screws
securely.
Selectf
heR1
sectionoftubing
(1%"
x 48",12L9cmlong,item4).Slip
a
1%'compression
clamp
ontothe
R'l
section.
RefertoFigure
L SelecttheR2section
(1/e"
x48",121.7
cm
long,
item
7).Slip
the
unswaged
(untapered)
end
oftheR2section
intothe
R1sectionand
measure
dimensions
Bfor
your
modeof
transmission
(phone
or
CW)
asshown
in
Figure
10
then
tightenthe
compressionclampslightly.
CAUTION
Therearetwokinds
of
15-metertraps.Part
No.878694
is
aparasitic trapthat
is
used
inthe
Reflector
andDirector.
Part
No.878637
isforuse ontheDrivenElement.
i., i"r zl'
B
Figure10
Reflector
I
NOTE: Installallthetrapswithdrain holes
on
bottom
and
makesurelhe
part
numberend
istowardtheboom.
2.O
t5
t.o
2.O
ft
FJ
iir,
j"
$:
#
f)j.{
:.!
l
L-."'t,.,-"-, I
ti
F.a'll2l-r.il+ A
ttco$rcd 03 Siorn.
Detall
:-.1-+--.:..---,-,-
-6-

@
(c
Assembly
ofthe
Driven
Element
Slipa1
"compression
clamp
onto
the
swaged
endoftheR2
section.Selectthe10-meter
trap
(item
16),
andsliptheshorted
end into
the R2section.Theshortedendcan be
identified
bythe
part
number
markingnear
the
plastic
insulator.
Measure
dimensionC
f-or
your
mode
of
transmission
as
shown
inFigure'10.
Make
certain
lhedrain
holesin
thetraps
arefacing
downward,
CAUTION
Be sure
you instatt
the traps
corre6tty.Theywilt not
operate
property
unlesslhe
shortedend is facingtowards the boom.
Sliptwo1"
compression
clampsontothe
R3
section
(1"
x5",
12.7
cm
long,item
13).Now
slipthe R3 section
over
the 1O-meter
trapandslip theshortedendof the 1S-meter
parasitic
trap
(item
15),
into
the R3 section.
Make
certaintheshortedendofthetrap
(identified
by
the
part
number)
isinserted
into
the
R3
section.Measure
dimension
Dfor
your
mode
of transmissionas shownin Figure
'10,
keepingR3section
approximately
equidistant
fromthe two traps. Make certain
the drain
holesin thetraparefacing
downward.Now
tightenall
compression
clamps
slightly.
Slip
a Vz"
compression
cla;rip
overtheswagedend
ofthe
1S-meter
trap.SelecttheR4
section
(7/rc"
x 28",item 11)and
slipitintothe
15-metertrap.Measuredimension
Efor
yourmode
of transmission
as shownin Figure10,
thentighten
compression
clamp
slightly.
Carefully
recheckallmeasurements
andmake
certainthe
shortedendofall
traps
are
pointed
towardstheboom. Now
tightenallcompression
clampsas explainedearlier.
Remember
notto overtightenthem.Make
sureall
drain
holes
arefacing
down.
Slip
the
Reflector
e-lement
into
thebracket
assembledinthe
boom.
Tighten
thescrewsto
hold
the
R'l section
securelybutdonottighten
theanchor
screw
(item
25)atthistime.
SelecttheDE1
section
oftubing
(1/q"
x 48",121.9icm
long,
item4).Slip
all/a"compression
clamp
over
theDE1
section.SelecttheDE2
section
(1Va"
x
38",96.5cmlong,
item
9).Slip
theunswaged
endoftheDE2sectioninto
theDE1section
andmeasure
dimension
Gfor
your
mode
oftran.smission
as
shown
inFigure11.Now
tightenthecompression
clamp
slightly.
ORIVEN ELEMENT
Oaz,tt'19-
a,
U, ..'
H@
Figure11
Driven
Element
Slipa1
"compressionclamp
overthe
swagedendof
theDE2section.
Select
the
'l
0-meter
trap
(878649,
item1
6)and
slip
the
shortedend
(identified
bythe
part
number)
into
thepE2
section.Measure
dimension
Hfor
your
modeoftransmission
asshown
in
Figure
1
1
.
Make
certain
thedrain
holesin
thetraparefacing
downward.
Nowtightenthecompression
clamp
slightly.
aa\'ttaz
{F

Sliptwo
1''
compressionclamps
overtheDE3section
(1"
x6",15.2
cm
long,
item12).Now
sliptheDE3sectionover
the1O-metertrapthensliptheshortedendofthe1S-meter
DrivenElementtrap
(878637,
item
14)
into
theDE3section.Make
certain
the
shorted
end
ofthetrap
(identif
ied
by
part
number)
slippedinto
the
DE3
section.Measure
dimension
1
for your modeof transmission
as shownin Figure
11
, keeping
the DE3 section
approximatelyequidistant
fromthe two traps.Nowtighten
the compression clamps
slightly.
Slipa Yz"compression
clamp
over
theswaged
endofthe
1S-meterDEtrap.Selectthe
DE4
section
(7
/ ra"
x28",item
1
1
)
and
slipitinto
theswagedendofthe15-meter
DE
trap.
Measure
dimension
J
for
your
mode
oftransmission
asshown
inFigure11thentightenthe
compressionclampslightly.
Carefullyrecheck
allmeasurements
asshowninFigure1'l andmake
certain
thatthe
shortedendsofthe
traps
are
pointed
towardsthe
boomand
trap
drain
holes
are
facing
downward.Now
tighten
allcompression
clamps
securely.
Slipthe insulated
endof thetjriven element
intothebracketassembledontheboom.
Tighten
thescrewstohold
theelement
securelybutdonoltightenthe
anchor
screw
(item
25)atthistime.Refer
to Figure6.
ChecktoseethattheDriven
Element
willliein
thesame
plane
as
theReflectorand
make
certainitisstill723/n"
(184.8
cm)
fromthe
centerof
one
bracket
tothe
center
oftheother.
Now
tightenthe
anchorscrew
securely.
Select
the
D1
sectionoftubing
(1%"
x48",121.9
cm
long,item4).
Slipa
1/n"
compression
clampovertheD1
section.
Select
theD2section
(1%"
x38",96.5cmlong,item9).Slipthe
unswagedendof D2 intotheD1 sectionand measuredimension L for
your
modeof
transmission
asshown
inFigure12. Now
tighten
the
compressionclampslightly.
(o
Assembly
of
the
Director
oa, '4j r 2a' t5-rET€i
t6!,!
{6t-5
2!'tr.r6' f-
ll'(D.t@l F
Lo(3r
Figure
12
Director
Slipa 1" compression
clamp
over
lhe swaged endof D1. Selectthe 10-meter trap
(878749,
item16)
andslipthe
shorted
end
(identified
bythe
part
number)intotheD2
section.Measure
dimension
M
for
your
mode
of
transmissionasshownin
Figure12.Make
certainthe
trap
drainholes
are
facing
downward,
thentightenthe
compressionclamp
slightly.
Sliptwo
1
"compression
clamps
over
theD3section
(1"
x6",15.2
cmlong,
item12).
Slip
theD3s,ectionoverthe10-metertrap,
thenslip
theshortedendofthe15-meter
parasitic
trap
(878694,
item
15),intotheD3section.
Make
certaintheshortedendof
thetrap
(identified
bythe
part
number)isinsertedintotheD3
section.
Measure
dimension
Nfor
your
mode
oftransmissionas
shown
in
Figure
12,
keeping
D3approximatelyequidistant
from
the
two
traps.Now
tighten
the
compression
clampsslightly.
'01, t" a' E.llf r$'- -Dl.tt'.4'
o32 6 rqr {5h qr / / flzr.hEr
/.,e*ftR
frE
/ /
-------=b- -----7 t-------f--
-8-

%d'
crpt-uc
XOTE:IIISTALL ALL TRAPS WIIH
DRAril HOLES Ot{ BOT'OM t
ilA(E CERTAIT{ PART }{Uil8EN END
ts TowARo
800rr.
Slip
alz"compression
clampoverthe
swaged
end
ofthe1S-meter
trap.
select
the
D4
section
(7ha"
x28",71.1
cmlong,
item11
)
and
slip
itinto
the
swagedend
of
the1
S-meter
trap.
Measuredimension
Ofor
your
mode
oftransmission
as
showninFigure
12
andthen
tighten
thecompression
clamplighily.
Insert
the
Director
Elementintothebracket
hssembledontheboom.Tighten
thescrews
to
hold
the
element
securelybutdonot
tighten
theanchorscrews
(item
25)
atthis
time.
ELEMENT.
TO.
8OOil ARACXETS
ISEE
FIGURE4}
Eoon sEcilo[
2' r 84'
(213.4cn
long)
9l?a'ti!J.ocn)
CENTER
-TO.CENTER G
FRONT
7,""
capr-uo
le" capuud
BOOM.TO.MAST BRACKET
ER DRIVEil ELEMENT TRAP
IO.METER TRAP
RF CHOKELEAOS
(SEE
FIGUREt4)
{DETAILSA 8 B)
DRIVEI{
€LEUENT
COMPRESSION
CLAt,,tPS
EETA MATCH
(SEE FIGUREI4I
BOO|' SECTtON
2' r 84'
(213.4cn longl
lzU.'llg4.Bc6l
15.f,ETER
PARASITIC
TRAP
IO-METEi TRAP
REFLECTOR
COMPRESSION
CLAMPS
Flgure
13. Overall
Vlew
Carefully
recheck
all
measurements
asshownin
Figure13.Thedriven
elementshould
measure
723/n"
(184.8
cm)from
the
center
ofthe
reflector
element-to-boom
brackettothe
center
ofthe
drivenelement{o-boom
brackelasshownin
Figure
13.The
directorshould
measure
913/o"
(233.0
cm)from
the
center
ofthe
drivenelement{o-boombrackettothe
center
ofthe
director{o-boom
bracket.
Make
certain
that
the
shorted
ends
ofthetrapare
pointed
towards
theboom
and
the
trap
drainholes
are
facingdownward.Nowtighten
all
compression
clamps
and
anchorscrews
securely.
-9-
I
)
I
-i
'.4
e'
tG:::

lnstallation
of
theBetaMatch
FinalAssembly
ORIVENELET€NI
Selectthebetamatch
tubes
(%"
x 46",
116.8cmlong,
item10)
andthebetasupport
insulators
andclamps
asshownin
Figure
14
andDetailC&
D.Assemblethebetamatch
tubesin
theboomas
shown
.in
Figure14
andDetailC& D.
Select
thebetamatch
shorting
clamps
andthe
shortingstrapandassembleasshownin
Figure
14
andDetail
D.Notice
that
the
#10-24
x1l/2"
screwattachingtheshortingclamps
to
thestraphas
asleeve
slipped
overit.This
allows
you
toinstall theshortingclamps
without
putting
undue
strain
on
thebetamatch
tubes.
Install
the
pigtail
assemblies(item
55)on
tne
Oetamatchtubesusingthetwo
#10
screws
(item
32)and
lockwashers
(itema2).
Sliplhe
1t/t"tubingclampsontheDrivenElement
near
theinsulalor.
Loosely
attach
the
pigtails
to
thetubingclampsusingthe
t/n"
-20
x11/2"
screwsasshown
inFigure
14.
Donot
tighten
theeonnectionat
this
time.
The
coaxial
feedline
will
connect
to
this
point
in
alater
step.
***;
.r'
SEAL WITH NEOPRENE.
PLY-O-8OND
OR OTXER SEALANT. ao-o388-A-OlO
AO-O188-A-O09
to t7j'(3.ecm)
CLAMP
RF CHOKE5" (
15.2
cm
t INNER
DI/IMETER,
r2 TURNS
OF RG
g/U ORHY.GAIN
STRIPCOAX
FOR
C}IOKE
AS SHOWN
DETAILB
AO-OS8.A-ql
Place
a 7/,0" caplug
oneach element
DETAILD
tip and a 2" caplugon each end of the boom
Install
aHy-Gain
balunModel
BN-86,
availableat
your
local
Hy-Gain
dealer.The
BN-86
will
allowthe
TH3-Mk3
to
operate
with
a
greater
efficiencythan
is
possible
with
a
"home-
made"
choke.
lf
your
wish,
you
maywind
yourself
anRF
choke.
The
choke
consislsof
12
turnsof
RG-
8/u coaxialfeedlinewith
6"(15.2
cm)
diameter.stripone
endofthe
chokeasshown
in
Figure
14
and
DetailB
andconnect
tothe
tubing
clamps
ontheDriven
Element.
Tapethe
choke
securely
tothe
boom
and
weatherproofthe
connection
tothe
DrivenElement
using
Pli-O-Bond,
Neoprene
orsomesimilarsubstance.
o)
Qi'
@
I
@
I
DETAIL
C
DETAIL
A
-10-

Parl No. Dercrlptlon otv
102734 brackel,cast
aluminum ...........2
172732 clamp,
boom-to-bracket. .......... 1
172735 bracket,casting-to-boom.
................. 1
190900 R1,0E1,Dl,1%"x48".. .........6
165919 bracket,element-to-boom;
#13
............ 4
165920 bracket,driven
element-to-boom,fl14
......2
190300 R2,1ya"x48"swg7/e".... ........2
178411 boomsection,2"x84". ...........2
190307 De2,D2,11/a"x38"swg/a" .......4
171142 betarods,.%"
x46"
.. ...... 2
178558 D4,DE4,R4,7/16'x28"
.. .......6
190606 03,DE3,1"x6". ........4
190607 R3,1"x
5"..... ......
....
2
878637 lrap,
1S-meter
drivenelement.............2
878694 lrap,
ls-meterparasitic ........... 4
878749 trap,lo-meter ...... .... .
6
879894 PartsPack A ..... ....... 1
879231 PartsPack B ..... ....... 1
872089 PartsPack
C .. ... ....... 1
Parls
PackA,879894
171131 betamatchshortingsleeves, ......1
502898 il10-24x 1"hexhead
screw..............6
501541 screu
5/t6"-18x3Ya"
hex
head........... 3
501543 screw,5/16"-18
x
5",hex
head...
......... 4
506325 screw,
%"-20
x
3/q"
hexhegd...
........... 28
505540 scfew,
%"-20x
%"hexhead............... 6
506335 screw,
%"-20
x 1Yz"hex
head
............. 3
506440 screw,
#10-24
x13/"
round
head...
,.......4
500095 screw,
#10-24x 1%"
hexhead
.... .......25
lo-oltt-c-ooa
SEEGTAIL O
sE€ o€t^tl c
PariNo. Dercrlpllon Ary
506485
. screw,
#10-24x%"roundhead.
..... ...... 2
506741 screw,5/16"-18x23/c"hex
head...
........2
(not
applicable)
516470 screw, f10-24
xy2"
Wpe
A.......,........2
(not
applicable)
555362 nut,#10-24
square. ..... 30
556945
.nut,
5/16"-18hex.... ............
I
556960 nut.
y."-20
hex
.... ....... 34
556970 nut,#10-24
hex..... ...... 9
558685 nut,
y1"-20
square. ....... 6
(nol
applicable)
567075 lockwasherr
5/16"internal ....
....2
567110 lockwasher, %"
internal .......... 58
567125 lockwasher,#l0internal .........11
ParlsPack
B,879231
380284 compression
clamp,Yz" .,......... 6
380286 compressionclamp,1" ..........18
380287 compressionclamp, 1%"
..... ...... 6
168695 tubingclamp,1U,".... ............2
17'1077 betashorting
strap,2"
|D.,... ...... 1
171162 beta
shorlingslrap,21," ............2
177888 beta'supportclamp.. ....,.2
Parts
Pack
C,872089
455625 caplug,2" ..........2
455644 caplug,T/16'. ...........6
465595 insulalor.
betatube ........2
465600 insulator,
betasupport ..,........2
465833 insulator,
DE-to-boom ............2
878561 pigtail
assembly...... ............2
|Ge4
| lt'
@ rrr eoos
{**""*
E ':
i
'''--..-:''
,
Qr
llem
I
2
a
4
5
6
7
8
9
10
1l
12
13
14
llem
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
54
55
15
16
17
18
19
20
21
22
23
24
25
26
zt
28 -1
't
-

ry
{
Converllng
Engllsh
Measurements
to Metrlc
Use
this
scaletoidentity
lengths
ofbolts,
diameters
oftubes,
etc.
The
English
inch
(")
andfoot
(')
can
beconverted
to
centimeters
in
lhis
way. 1inch
(1")=
2'54
cm
1foot
(1')
=30.48
cm
Example:
42"
x2.54
=106.7
cm
c)
;q
'q
.,s
li,
;l
..:
'a.
'z
I'
PRNTEDN U.S.A
Copyrighto 1979 by Fy-Gain EleClrooics
Oivisiond T€LEXCOMMUNICATIO|.IS.
lNC.
All rigils resewed.
6-791r2140
t*: