INSTRUCTION BOOK FOR BROADBAND ANTENNA, FILTER, AND VIDEO DETECTOR SYSTEM

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03424A002100040038-5
• Release Decision: RIFPUB
• Original Classification: C
• Document Page Count: 26
• Document Creation Date: December 27, 2016
• Document Release Date: September 12, 2012
• Sequence Number: 38
• Publication Date: July 1, 1961
• Content Type: MISC

Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
CONFIDENTIAL
INSTRUCTION BOOK
FOR
BROADBAND ANTENNA, FILTER,
AND
VIDEO DETECTOR SYSTEM
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CONFIDENTIAL
1 JULY 1961
Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
BROADBAND ANTENNA, FILTER,
AND
VIDEO DETECTOR SYSTEM
1D7Li
INSTRUCTION BOOK
1 JULY 1961
Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
Table of Contents
List of Illustrations
TABLE OF CONTENTS
Section Page
I GENERAL DESCRIPTION 1-1
1.1 Description 1-1
1.1.1 General 1-1
1.1.2 50- to 500-Mc System 1-1
1.1.3 500-to 1000-Mc System 1-2
1.1.4 1000-to 10,000-Mc System 1-2
1.1.5 10,000-to 40,000-Mc System 1-2
1.2 Equipment Supplied 1-2
1.3 Equipment Required but not Supplied 1-2
II OPERATION 2-1
2.1 Assembly Procedures 2-1
2.1.1 50- to 500-Mc System 2-1
2.1.2 500-to 1000-Mc System 2-1
2.1.3 1000-to 10,000-Mc System 2-1
2.1.4 10,000-to 40,000-Mc System ...... 2-2
LIST OF ILLUSTRATIONS
Figure
Page
1-1
Antenna AN-22 with Detector-Holder HC-1 and One Filter Attached
?
?
1-4
1-2
Filter FI-11, FI-12, or FI-13
1-4
1-3
Detector-Holder HC-1
1-5
1-4
Antenna AN-23 (500 - 1000 Mc)
1-5
1-5
Filter FI-14 (500 - 750 Mc)
1-6
1-6
Filter FI-15 (750 - 1000 Mc)
1-7
1-7
Antenna AN-24 (1000 - 10,000 Mc)
1-7
1-8
Filter FI-16 (1000 - 2000 Mc)
1-8
1-9
Filter FI-17 (2000 - 4000 Mc)
1-8
1-10
Filter FI-18 (4000 - 8000 Mc)
1-8
1-11
Filter FI-19 (8000 - 10,000 Mc)
1-9
1-12
10,000- to 40,000-Mc Antenna, Filter, and Detector System
1-9
2-1
Antenna AN/A-25 (10,000 - 40,000 Mc)
2-2
2-2
Antenna AN/C-25 (30,000 - 40,000 Mc)
2-3
i
Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
List of Tables
LIST OF TABLES
Table Page
1-1 Frequency Coverage Breakdown 1-1
1-2 Equipment Supplied for Complete System 1-3
ii
Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
SECTION I
General Description
SECTION I
GENERAL DESCRIPTION
1.1 DESCRIPTION.
1.1.1 GENERAL.
The Broadband Antenna, Filter, and Video Detector System operates with a video amplifier
(not supplied) to receive the frequency range of 50 mc to 40,000 mc in four steps. The 50-
to 500-mc portion of the system includes Antenna AN-22, Filters FI-11, FI-12, and FI-13,
and Detector-Holder HC-1. The 500- to 1000-mc portion of the system includes Antenna
AN-23, Filters FI-14 and FI-15, and Detector-Holder HC-1. The 1000- to 10,000-mc
portion of the system includes Antenna AN-24, Filters FI-16, FI-17, and FI-18, and
Detector-Holder HC-1. The 10,000- to 40,000-mc portion of the system includes an electro-
magnetic horn and crystal detector assembly with two wave guide inserts. By using the horn
with either of the inserts or without either, the 10,000- to 40,000-mc range is covered as
10,000- to 40,000-mc, 20,000 to 40,000 mc, or 30,000 to 40,000 mc. Figures 1-1 through
1-12 show parts of the system identified by nomenclature. Table 1-1 shows the frequency
coverage of parts and combinations of parts of the system.
TABLE 1-1. FREQUENCY COVERAGE BREAKDOWN
ANTENNA
FILTER
FREQUENCY
COVERAGE (MC)
TOTAL FREQUENCY
COVERAGE
AN-22
FI-11
50-100 mc
FI-12
100-200 mc
50-500 mc
FI-13
200-500 mc
AN-23
FI-14
500-750 mc
FI-15
750-1000 mc
500-1000 mc
AN-24
FI-16
1000-2000 mc
FI-17
2000-4000 mc
FI-18
4000-8000 mc
1000-10,000 mc
FI-19
8000-10,000 mc
AN-25
AN/A-25, ridged wave guide
insert
10,000-40,000 mc
AN/B-25, without insert
20,000-40,000 mc
10,000-40,000 mc
AN/C-25, small wave guide
insert
30,000-40,000 mc
1.1.2 50- TO 500-MC SYSTEM.
The 50- to 500-mc system consists of Antenna AN-22, Filters FI-11, FI-12, and FI-13, and
Detector-Holder HC-1 with type 1N358A crystal. The antenna is a modified planar
1-1
Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
SECTION I
General Description
logarithmically periodic antenna made of a metal braid sewn on a 36- by 36-inch piece of
fungus-proof shirt cloth. The feed cables, associated filters, and detector are secured to the
surface of the antenna cloth with snaps for ease in change and removal. The cloth and wire
braid antenna is flexible and can be folded or rolled into a small volume.
1.1.3 500- TO 1000-MC SYSTEM.
The 500- to 1000-mc system consists of Antenna AN-23, Filters FI-14 and FI-15, and
Detector-Holder HC-1. The antenna is a solid-tooth logarithmically periodic type. The
two halves of the antenna are etched upon copper-clad, Teflon-impregnated glass fiber boards.
These two boards are then mounted back-to-back so that the teeth in one half of the antenna
mask the gaps in the other half. The two Teflon-impregnated glass fiber boards are drilled
so that the associated filters may be mounted on the structure by means of studs and wing
nuts. The detector mounts on the connector of the associated filter, and interconnecting cable
for associated video detector (not furnished) connects to the detector holder.
1.1.4 1000- TO 10,000-MC SYSTEM.
The 1000- to 10,000-mc system consists of Antenna AN-24, Filters FI-16, FI-17, FI-18,
and FI-19, and Detector-Holder HC-1. The antenna is the same type as that of the 500- to
1000-mc antenna except it is not truncated. The two halves of the antenna are constructed
in the same manner as those of the AN-23, and are positioned precisely with relationship to
the printed surfaces. The boards are drilled for stud and wing nut mounting of associated
cables, filters, and detector.
1.1.5 10,000- TO 40,000-MC SYSTEM.
The 10,000- to 40,000-mc system consists of Electromagnetic Horn AN-25, a type 1N53R
crystal, and two waveguide inserts. The horn assembly consists of horn, waveguide, crystal
detector holder and a type TNC video output connector. The crystal is inserted in its holder
and secured in place with a knurled cap. With the ridged wave guide inserted into the wave
guide throat, and with the detector in place, the assembly becomes Antenna AN/A-25, having
a frequency response of 10,000 to 40,000 mc. Without either insert, the assembly is
Antenna AN/B-25, having a frequency response of 20,000 to 40,000 mc. With the small
wave guide insert in the wave guide, the assembly becomes Antenna AN/C-25, having a
frequency response of 30,000 to 40,000 mc. Wooden tools for insertion and removal of the
inserts are supplied with the equipment. Drawings are supplied so the customer may con-
struct new tools in case of loss, wear, or breakage.
1.2 EQUIPMENT SUPPLIED.
Equipment supplied is shown in figures 1-1 through 1-12 and listed in table 1-2. Table 1-1
shows the frequency coverage of the individual parts of the system.
1.3 EQUIPMENT REQUIRED BUT NOT SUPPLIED.
A low-impedance video amplifier with a bandwidth of approximately 2.0 megacycles is
required to amplify the output of the system detectors to a usable level.
1-2
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SECTION I
General Description
TABLE 1-2. EQUIPMENT SUPPLIED FOR COMPLETE SYSTEM
TYPE
QTY
ITEM
DIMENSIONS (in)
LENGTH
WIDTH
THICKNESS
AN-22
1
Antenna
36
36
cloth
FI-11
1
50- to 100-mc filter
3
3
5/8
FI-12
1
100- to 200-mc filter
3
3
5/8
FI-13
1
200- to 500-mc filter
3
3
5/8
AN-23
1
Antenna
16-1/4
12
3/32
FI-14
1
500-to 750-mc filter
6.683
4.250
1.000
FI-15
1
750- to 1000-mc filter
4.986
3.186
0.840
AN-24
1
Antenna
19-7/8
6
3/32
FI-16
1
1000- to 2000-mc filter
4.986
2.314
0.840
FI-17
1
2000- to 4000-mc filter
9.780
1.550
0.625
FI-18
1
4000- to 8000-mc filter
8.480
1.570
0.625
FI-19
1
8000-to 10,000-me filter
3.145
1.255
0.625
AN/( )-25
1
Antenna
5-1/2
3-1/4
1-3/4
1
Ridged wave guide insert
1.362
0.339
0.169
1
Small wave guide insert
1.409
0.340
0.170
HC-1
3
Detector-Holder (with crystal)
2
5/8 dia
3
Tools for AN/( )-25
insertion and removal
1-3
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Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
SECTION I
General Description
1-4
Figure 1-1. Antenna AN-22 with Detector-Holder HC-1 and One Filter Attached
Figure 1-2. Filter FI-11, FI-12, or FI-13
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4 A A
? /ef.
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Al;
aYe-Z-?
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SECTION
General Description
Figure 1-3 Deteothl -Heider Ifewl
1000 Mc ?
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SECTION
Generai D:c t? ptiun
1-6
Figure. I-5 Filter FI-14 (BOO - 750.
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g-AgraVilf.
ieef
/4te 41 e/e?'
AWME.R.
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-- .
fl< 23
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SECTION /
General Deecriptien
;.r.4r".?-?
Figure i.
Figure
Antenna AN-24 (1000
0,000 Mc)
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Declassified and Approved For Release 2012/09/12 : CIA-RDP78-03424A002100040038-5
SECTION 1
Gel ter& DescrIption
..igemowaISONIP
ANOMMimiiiMASN.01,-
FigiATp...)...7.-S, Filter FIii 1.000 2000 Mc
.? Filter FI-17 (.20)0 4000 ?
Figure: -10., Filter FI-18 0000 8000 mo
:1.-8
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ic/
/c;
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SECTION
General Description
Figur- 141? Filter I-19 (8000 - 10,000 Mc)
CRYSTA t.
OUTP3...%1'
ECTOR
SMALL
\