Amphenol rectangular slide chart for RF cable and connector selector
Datecopyright 1947
Inventory Number1998-1-1373
ClassificationSlide Rule
Subject
Maker
American Phenolic Corporation
founded 1932
Maker
Perrygraf
founded 1934
Cultural Region
Place of Origin
Dimensions0.2 × 17.9 × 9.5 cm (1/16 × 7 1/16 × 3 3/4 in.)
Material
DescriptionRectangular sleeve composed of two paper rectangles, held together at all four corners by circular brass fasteners and containing a paper slide.
The face of the sleeve is printed with three tables, stacked vertically. The top table is labeled for "COAXIAL / V.P. 65.9%" cable, the center table for "TWINAX / V.P. 65.9%" cable, and the bottom for "LOW / CAPACITANCE / COAXIAL" cable. Each table has 15 columns containing data pertaining to particular cable models. In all three tables, in place of the fifth column, for "D.B. / PER / 100 FT.," is a slot through which the slide can be seen. The same is true for the thirteenth column, "WATTS / INPUT," in the top table only.
Above each table is a diagram of the relevant cable type, with arrows pointing from the sixth through eleventh columns to parts of the cable. These are: "INNER / CON- /DUCTOR"; "DIALEC- / TRIC / NOM O.D."; "INNER SHIELD"; "OUTER SHIELD"; "VINYL JACKET"; and "NOM / O.D.," respectively.
Above the three tables is a square hole, labeled "M.C." To the left of the hole is printed, "SELECT TO FREQUENCY / AND SELECT CABLE." Below the three tables is "NOTE--*When characteristics are similar, give prefer- / ence to cables marked by an asterisk (*)." To the right of the tables is a "LEGEND," listing the meanings of a number of abbreviations.
On the back of the sleeve are printed two tables for "SERIES 83 / LOW VOLTAGE / NON-CONSTANT IMPEDANCE / CONNECTORS" (on the left) and "CONSTANT IMPEDANCE CONNECTORS" (on the right). Between the second and third column of each table is a vertical slot through which the slide can be seen. Between these tables are two more tables, stacked vertically. The top is labeled for
"UHF SMALL TWIN, low voltage non-constant / impedence connectors used on RG-22/U," the bottom for "UHF LARGE TWIN, low voltage non-constant / impedence connectors used on RG-57/U."
Above the "SERIES 83" table is a square hole, labeled "RG/U No." To the left of the hole is printed, "SET TO CABLE NUMBER / AND SELECT CONNECTORS."
The face of the sleeve is printed with three tables, stacked vertically. The top table is labeled for "COAXIAL / V.P. 65.9%" cable, the center table for "TWINAX / V.P. 65.9%" cable, and the bottom for "LOW / CAPACITANCE / COAXIAL" cable. Each table has 15 columns containing data pertaining to particular cable models. In all three tables, in place of the fifth column, for "D.B. / PER / 100 FT.," is a slot through which the slide can be seen. The same is true for the thirteenth column, "WATTS / INPUT," in the top table only.
Above each table is a diagram of the relevant cable type, with arrows pointing from the sixth through eleventh columns to parts of the cable. These are: "INNER / CON- /DUCTOR"; "DIALEC- / TRIC / NOM O.D."; "INNER SHIELD"; "OUTER SHIELD"; "VINYL JACKET"; and "NOM / O.D.," respectively.
Above the three tables is a square hole, labeled "M.C." To the left of the hole is printed, "SELECT TO FREQUENCY / AND SELECT CABLE." Below the three tables is "NOTE--*When characteristics are similar, give prefer- / ence to cables marked by an asterisk (*)." To the right of the tables is a "LEGEND," listing the meanings of a number of abbreviations.
On the back of the sleeve are printed two tables for "SERIES 83 / LOW VOLTAGE / NON-CONSTANT IMPEDANCE / CONNECTORS" (on the left) and "CONSTANT IMPEDANCE CONNECTORS" (on the right). Between the second and third column of each table is a vertical slot through which the slide can be seen. Between these tables are two more tables, stacked vertically. The top is labeled for
"UHF SMALL TWIN, low voltage non-constant / impedence connectors used on RG-22/U," the bottom for "UHF LARGE TWIN, low voltage non-constant / impedence connectors used on RG-57/U."
Above the "SERIES 83" table is a square hole, labeled "RG/U No." To the left of the hole is printed, "SET TO CABLE NUMBER / AND SELECT CONNECTORS."
Signedface, bottom right: AMERICAN PHENOLIC CORPORATION CHICAGO 50, ILLINOIS
back, bottom left: Perrygraf Calculator. Copyrighted 1947. By American Phenolic Corp.
back, bottom right: AMERICAN PHENOLIC CORPORATION CHICAGO 50, ILLINOIS
Inscribedface, top right: AMPHENOL R F CABLE AND / CONNECTOR SELECTOR
face, bottom right: AMFORM 1222 / Printed in U.S.A.
FunctionFor selecting the RF cable and connectors to be used at a particular radio frequency.
The user first moves the slide to left or right until the appropriate value for frequency is visible through the square hole on the slide's face. He then selects the cable model that will meet his requirements in terms of cable type (coaxial, twinax, or low capicitance coaxial) and power ("D.B." and "Watts Input" columns).
Next, the user turns over the slide rule and moves the slide to left or right such that the cable model number he selected is visible through the square hole on the slide's back. The black dots in the third column of the adjacent tables indicate the complementary connector models.
The user first moves the slide to left or right until the appropriate value for frequency is visible through the square hole on the slide's face. He then selects the cable model that will meet his requirements in terms of cable type (coaxial, twinax, or low capicitance coaxial) and power ("D.B." and "Watts Input" columns).
Next, the user turns over the slide rule and moves the slide to left or right such that the cable model number he selected is visible through the square hole on the slide's back. The black dots in the third column of the adjacent tables indicate the complementary connector models.
Thew Shovel Company
Date: copyright 1947
Object number: 1997-1-1615
Altec Lansing
Date: 1960-1965
Object number: 2015-1-0002
Spencer Lens Company
Date: circa 1938
Accessories: carrying box; instruction manual
Object number: 1998-1-0105
George Grady Press
Date: after 1943
Object number: 1998-1-1689
Digital Equipment Corporation
Date: circa 1980
Object number: 1998-1-1042
Harvard Cyclotron Laboratory
Date: 1947-2002
Object number: 2003-1-0291