Antennacraft Antenna ST3 manual

							
This outdoor VHF/UHF antenna covers from 108 to 1300 
MHz.  It  uses  three  vertical  radiators  and  three  horizontal 
radials, all stainless steel, with a chrome-plated brass ra-
diator assembly for efficient reception and lasting service.
WARNING:  INSTALLATION OF THIS PRODUCT 
NEAR  POWER  LINES  IS  DANGEROUS.  FOR 
YOUR  SAFETY,  FOLLOW  THE  INSTALLATION 
DIRECTIONS.
If any metal antenna part touches a power line, 
it  completes  a  circuit  path  through  anyone 
touching the antenna. Power line voltage is le-
thal. You can be killed.
Before You Begin
Before  you  begin  installation,  read  this  manual  and  its 
safety  information.  For  your  safety  and  convenience,  plan 
each  step  of  the  installation  and  purchase  the  necessary 
hardware  you  will  need  in  advance  at  your  local  electron-
ics store. The order in which you perform the steps and the 
hardware  required  depends  on  the  mounting  and  connec-
tion methods you choose. 
To  prevent  serious  injuries  and  death,  follow 
these safety rules:
•   If you are not sure you can install the antenna safely, do not 
try  to  do  it  yourself.  Check  the  phone  listings  under Televi-
sion  Antenna  Systems,  or  call  your  local  power  company.
• Assemble  as  much  of  the  antenna  as  possible  on  the 
ground.
• Watch for overhead  power  lines.  Check the distance  to 
powerlines  before  you  begin  installing.  We  recommend 
that  you  keep  a  minimum  distance  of  twice  the  total 
length of the mast and antenna assembly between your 
antenna site and the nearest power line.
• The  antenna  mast,  cable,  and  guy  wires  all  are  excel-
lent  electrical  conductors.  Keep  these  away  from  power 
lines.
• Do not use a metal ladder.
Model ST3
VHF-Hi/UHF
Scanner Antenna
108-1300 MHz Range
20” Height
Accepts PL-259 Connector (not included) 
Stainless-Steel 
• Do not attempt installation on a windy day.
• Have a friend act as a spotter when you are on the ladder 
or on the roof.  A spotter could see things you might not.
• If the antenna starts to fall, let go of it and let it fall.
• If any part of the antenna system touches a power line, 
call your local power company and ask them to remove 
it. Do not try to remove it yourself.
• Be  sure  your  family  and  friends  understand  the  danger 
of touching overhead power lines. They should never try 
to remove any object touching a power line.
If someone touches a power line:
•  Do  not  touch  anyone  still  in  contact  with  the  antenna  or 
the power line.
• Use a dry board, stick, or rope to move the antenna away 
from the victim.
• If  the  victim  stops  breathing,  administer  artificial  respira-
tion until help arrives. 
• Have someone call for medical help
Where to mount your antenna
You can mount this antenna at a maximum height of 60 feet 
above ground level, provided that:
• You  locate  the  antenna  more  than  1¼  miles  from  the 
nearest airport runway.
• The antenna site’s elevation above mean sea level is no 
greater than that of the nearest airport. 
• If your site does not meet both of these conditions, do not 
mount your antenna more than 20 feet above the ground.
• Note: Refer  to  FCC  Bulletin  1001H  for  further  information. 
• Mount  your  antenna  where  solid  structural  support  is 
available  and  where  the  incoming  signal  has  minimum 
interference.  The  best  place  is  on  a  roof,  with  the  mast 
secured to a gable or chimney.
 Note: Large amounts of smoke and soot can form depos-
its  on  the  antenna,  and  lower  its  efficiency.  Check  local 
zoning ordinances for antenna installation regulations.
ST3 
						

							
Acceptable Types of Antenna Installations
1.  Tripod:   Use  a  3-foot  or  5-foot  tripod  bolted  to  a    roof 
or other sturdy mounting surface. Guy wires are not re-
quired.
2. Chimney  Mount:    Use  heavy-duty  chimney  mounts, 
straps, or brackets attached to the chimney or to a wall. 
For  safety,  limit  mast  assembly  to  10-foot  or  smaller. 
Guy wires are not required.
3.  Eave  or  Wall  Mount:    Use  heavy-duty  brackets    at-
tached  to  wood  or  masonry.  The  complete  installation 
must  be  able  to  support  the  antenna  assembly,  plus 
wind  pressure.  For  safety,  limit  mast  assembly  to  10-
foot or smaller. Guy wires are not required.
4.  Guyed  Mast:    Use  a  heavy  duty  telescoping  antenna 
mast (not included) and guy wires (not included).
Assembly Instructions
1.  Assemble  the  radial  rods  by  screwing  one  jam  nut  on 
the threaded end of each rod and placing one radial rod 
cap on the opposite end of each rod.
2.  Hand-tighten each radial rod into the hub of the radiator 
assembly. Then, tighten the jam nut against the hub.
3.  Place the radiator rod caps on the ends of the radiator 
rods.
4.  Attach the assembled antenna to the mounting bracket 
with the mounting lockwasher and the mounting nut. Be 
sure to tighten the mounting nut securely.
Installation Instructions
1.  Route  coax  cable  (not  included)  from  your  receiver  to 
your antenna location.
2.  Attach the antenna to the mast (not included) using the 
U-bolt, hex nuts, and lockwashers. Be sure to tighten all 
nuts securely.
3.  Connect the coax cable to the antenna using a PL-259 
connector (not included).
4.  Fasten the coax cable to the mast with fasteners (avail-
able  at  your  local  electronics  store)  to  avoid  strain  on 
the cable connections.
5.  Mount  the  mast  at  a  location  you  have  checked  for 
power line clearance.
6.  Ground  your  antenna.  Drive  a  ½”  copper  or  steel  rod 
into  the  ground  as  close  to  the  antenna  base  as  pos-
sible.  Connect  an  8-gauge  or  larger  copper  or  alumi-
num wire (available at your local electronics store) from 
the  antenna  to  the  ground  rod.  Use  the  U-bolt  as  the 
antenna grounding connections point.
7.  Attach the warning label to the mast at eye level.
PARTS LIST:
DESCRIPTION ........QUANTITY INCLUDED
Radiator assembly .....................1
Radial rods  ................................3
Mounting bracket .......................1
U-bolt  .........................................1
Lockwashers..............................2
Hex nuts  ....................................2
Jam nuts ....................................3
Mounting lockwasher .................1
Mounting nut ..............................1
Rod caps  ...................................6
Warning label .............................1
www.antennacraft.net
12/03/07