ESCO Technologies ETS-LINDGREN 3159C Manuale utente
Model 3159C
High-Power
Biconical Antenna
User Manual
ii |
ETS-Lindgren Inc. reserves the right to make changes to any products herein to
improve functioning or design. Although the information in this document has
been carefully reviewed and is believed to be reliable, ETS-Lindgren does not
assume any liability arising out of the application or use of any product or circuit
described herein; nor does it convey any license under its patent rights nor the
rights of others. All trademarks are the property of their respective owners.
© Copyright 2005–2020 by ETS-Lindgren Inc. All Rights Reserved. No part
of this document may be copied by any means without written permission
from ETS-Lindgren Inc.
Trademarks used in this document: The ETS-Lindgren logo is a trademark of
ETS-Lindgren Inc.
Revision Record
MANUAL,3159C HIGH POWER BI-CONICAL ANT | Part #399775, Rev. D
Revision Description Date
A Initial Release November, 2005
B Rebrand November, 2008
C Update specifications February, 2018
D Update specifications, add
extension information
July, 2020
| iii
Table of Contents
Notes, Cautions, and Warnings................................................ v
1.0 Introduction .......................................................................... 7
ETS-Lindgren Product Information Bulletin ...................................................8
2.0 Maintenance ......................................................................... 9
Annual Calibration .........................................................................................9
Service Procedures .......................................................................................9
3.0 Specifications..................................................................... 11
Electrical Specifications ...............................................................................11
Physical Specifications ................................................................................11
Model 3159C Antenna .........................................................................11
Model 3159C Pedestal ........................................................................12
4.0 Mounting Instructions ....................................................... 13
Mounting the Balun Unit ..............................................................................13
Mounting the Biconical Elements.................................................................14
Adjusting the Tube Extensions ....................................................................15
5.0 Operation ............................................................................ 17
Model 3159C Pedestal ................................................................................17
Electrical Field Distribution ..........................................................................17
Calibration Data ...........................................................................................18
Typical Antenna Factor at 6M..............................................................18
Calculated Forward Power at 3.5M .....................................................18
VSWR ..................................................................................................19
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| v
Notes, Cautions, and Warnings
Note: Denotes helpful information intended to
provide tips for better use of the product.
Caution: Denotes a hazard. Failure to follow
instructions could result in minor personal injury
and/or property damage. Included text gives proper
procedures.
Warning: Denotes a hazard. Failure to follow
instructions could result in SEVERE personal injury
and/or property damage. Included text gives proper
procedures.
See the ETS-Lindgren Product Information Bulletin for safety,
regulatory, and other product marking information.
vi |
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Introduction |7
1.0 Introduction
The ETS-Lindgren Model 3159C High-Power Biconical Antenna is a
broadband, linearly polarized biconical antenna with a 20 MHz to 100 MHz
frequency range. This antenna exhibits a wide beamwidth and is designed to
handle up to 10 kW input power for generating high electric field strength over a
large uniform area.
The standard
configuration for the
Model 3159C consists
of:
Two open-end
biconical elements
High-power balun
Pedestal with
polarization control
The pedestal allows antenna height and tilt-angle to be easily adjusted, plus
features a wheeled base so that the antenna can be rolled out of the chamber
and stored when not in use. Slots below the base allow for easy transport with a
pallet jack or forklift. Horizontal and vertical polarization rotation is performed by
a toggle switch on the back. The air valve assembly for pneumatic polarization is
mounted onto the mast. The base is a steel plate covered in 137 ferrite tiles.
Each tile has a 10 mm hole in its center.
Biconical
elements (2)
(shown with
extensions)
Pneumatic
assisted
polarization
cylinder
Casters
Balun unit
Ferrite floor
8 | Introduction
Unlike the top hat, capacitive-loaded, log periodic dipole antenna normally used
in this frequency range, the phase center/source distance is the same for low and
high frequencies. This ensures high field strength at frequencies as low as
20 MHz. The design of the Model 3159C takes advantage of the wide beamwidth
feature of a biconical antenna. In addition, the optimized design provides
low VSWR and high radiation efficiency.
ETS-Lindgren Product Information Bulletin
See the ETS-Lindgren Product Information Bulletin included with your shipment
for the following:
Safety, regulatory, and other product marking information
Steps to receive your shipment
Steps to return a component for service
ETS-Lindgren calibration service
ETS-Lindgren contact information
Maintenance |9
2.0 Maintenance
Before performing any maintenance,
follow the safety information in the
ETS-Lindgren Product Information
Bulletin included with your shipment.
Maintenance of the Model 3159C is
limited to external components such as
cables or connectors.
If you have any questions concerning
maintenance, contact ETS-Lindgren
Customer Service.
Check all screws periodically and tighten any that are loose.
Check the air filters weekly; more often, as necessary. The air used to
feed the cylinder must be free of dirt and moisture. Never allow the air
filters to fill with water.
Lubricate all O-rings and pistons at 18-month intervals to prevent
excessive wear. The air cylinder uses a special O-ring lubricant that
can be purchased from any seal or bearing store or from
ETS-Lindgren.
Annual Calibration
See the Product Information Bulletin included with your shipment for information
on ETS-Lindgren calibration services.
Service Procedures
For the steps to return a system or system component to ETS-Lindgren for
service, see the Product Information Bulletin included with your shipment.
WARRANTY
10 | Maintenance
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