Blonder tongue BTY-2-FM User manual

INSTRUCTION MANUAL
One Jake Brown Road
Old Bridge, NJ 08857-1000 USA
[phone] • [phone] • FAX: [phone]
www.blondertongue.com
©2007 Blonder Tongue Laboratories, Inc. All rights reserved. Specifications are subject to change without notice. Trademarks are the property of their respective owner.
BTY-2-FM
Professional FM Broadband Antenna
Stock No. 4878
651144300D
Description
The BTY-2-FM is a professional quality FM omnidirectional broadband (88 MHz - 108 MHz) antenna, for use in
CATV and MATV installations. The antenna is a twin dipole design with 75 Ohm output and can be mounted
vertically or horizontally to a mast or tower (up to 2 1/2” diameter).
Square, heavy duty aluminum boom design for positive lock with mast and element mounting clamp. Elements
are thick wall aluminum with sealed ends for maximum vibration damping. Patented off-center driven elements
provide excellent 75 Ohm match without use of fragile capacitors as required in gamma match antennas. All
components and hardware required for complete assembly and mounting are supplied. Unit carton is UPS
shippable.
All mounting hardware is stainless steel.
Features
• Universal bracket for easy mounting (horizontal or vertical).
• Comes with all components required for a complete installation.
• Heavy duty construction.
• Hard drawn heavy wall aluminum boom.
• All stainless steel hardware.
• Thick aluminum wall elements with sealed ends provide maximum vibration damping.
• Mast mounting bracket has serrated teeth for better grip on mast (up to 2 1/2" O.D.)
• Patented off-center driven elements provide excellent 75 OHM match without use of fragile capacitors as
required in gamma match antennas.
• Easy to assemble and mount with minimum amount of tools.
• Square boom design assures positive lock with mast mounting bracket and element mounting clamp.

2BTY-2-FM
Instruction Manual
Specifications (Typical)
Electrical
Gain
Over Isotropic: 2.2 dB
Bandwidth: 88-108 MHz
VSWR (Return Loss): 12 dB (1.62-1)
Impedance: 75 Ohm
Pattern: Circular
Material and Finish
A. Antenna: All aluminum with stainless
steel hardware.
B. Boom: 6063T-6 tubing, .062 wall
finish 1 1/4" sq.
C. End Caps: Black polypropylene for boom
and elements.
Installation Instructions
1. Boom should be positioned with either 4 hole side facing up and the two larger diameter holes on left.
Fasten mounting plate on left side of boom using 2 1/4” .20 x 1-3/4” bolts, lockwashers and nuts as shown in
Figure 1.
2. Rotate boom 90 degrees clockwise so mounting plate is facing down (see Figure 2).
Attach lower dipole element (2 RF connectors) to the boom:
a. Position element so RF connectors are facing left, toward the mounting plate.
b. Insert 2-3/8” bolt through hole in the element connector bracket assembly then through boom.
Place reinforcing bracket at the end of bolt on bottom of boom and tighten firmly.
c. Insert 2-3/8” bolt through hole in element clamp. Place bolt through hole in element and boom.
d. Place reinforcing bracket at end of bolt on bottom of boom and tighten firmly.
3. Rotate boom 90 degrees clockwise (loop on mounted element should be facing down).
Position second element on top of boom over the two holes on the right end of the boom with single
connector facing toward the right.
4. Connect element to boom following instructions 2.b, c and d above.
5. Insert element end caps and boom end caps.
6. Affix coaxial cable from single connector element to either connector on dual connector element.
Tape or tie down cable to element or boom. See Figure 3.
Push weather boots over connectors.
Note: Additional weather boot supplied for downlead
7. Mount two U-bolts and serrated mast clamp as shown in Figure 2 using lockwashers and nuts.
Note: U-bolts can be positioned for vertical or horizontal mounting.
Mechanical
Size
Boom Length: 18"
No. of Elements: 2 (Driven)
Length of Longest Element: 59"
Accessories Supplied (In Plastic Bag)
1 Instruction Manual 2 Screws 10.32 x 2 3/8 SS
1 Safety Manual 2 Mounting Plate Clamps
1 Danger Label 2 Bolts 1/4.20 x 1 3/4" SS
1 Weather Boot 2 Nuts 1/4.20 SS
2 U-Bolts 3/8-16 SS 2 Washers 1/4"
4 Bolts 3/8-16 SS 1 Cable 29 1/2"
4 Lock Washers 3/8-16 SS 2 Re-enforcement brackets
1 Mounting Plate 2 Element Clamps
4 End Caps (Elements) 2 End Caps (Boom)
Packaging
1 antenna per carton unassembled, (UPS) shippable.
Contains 1 boom, 2 elements and 1 hardware bag.
Shipping Size: 4" x 5 1/2" x 60"
Shipping Weight: 3 lbs
Tools Required
Black Electrical Tape
Silicon Grease
5/16", 7/16" and 5/8" spintite
5/16", 7/16" and 5/8" open end wrench

3
BTY-2-FM
Instruction Manual
Boom Endcaps
Lower Element
Reinforcement Bracket
Mounting Clamp
Element Connector Bracket
Element Clamp
Element Endcaps
Wrap Cable As Shown
Upper Element

One Jake Brown Road
Old Bridge, NJ 08857-1000 USA
[phone] • [phone] • FAX: [phone]
www.blondertongue.com
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