8-inch coaxial lines to waveguides, series TNC connectors to waveguides, and series SMA connectors to waveguides, for general application by the armed services \(see 1.2, 1.3, 6.1, and 6.5\).

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MIL-DTL-22641F

3.2.10 Finish. All exterior surfaces of the adapter, except the mating surface, shall be finished in accordance with

finish number P511, type I of MIL-DTL-14072 for aluminum alloy adapters, and finish number P213, type I of MIL-

DTL-14072 for copper alloy adapters, with final film E of MIL-DTL-14072 conforming to type III, class 2, of MIL-DTL-

3.2.11 Pure tin. The use of pure tin, as an underplate or final finish, is prohibited both internally and externally. Tin

content of coaxial to waveguide adapter components and solder shall not exceed 97 percent, by mass. Tin shall be

alloyed with a minimum of 3 percent lead, by mass (see 6.7).

3.3 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally

preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the

operational and maintenance requirements, and promotes economically advantageous life cycle costs. All

components supplied shall be new and unused.

3.4 Voltage standing wave ratio (VSWR). When adapters are tested as specified in 4.6.2 and 4.6.2.1, the voltage

standing wave ratio shall not exceed the values specified in the specification sheet.

3.5 RF insertion loss . When adapters are tested as specified in 4.6.3, the insertion loss shall not exceed that

specified in the specification sheet.

3.6 Pressurization. When adapters are tested as specified in 4.6.4, there shall be no leakage, as detected by the

continuous formation of escaping air bubbles. Air leakage through the RF connector is not acceptable.

3.7 Shock (specified pulse). When adapters are tested as specified in 4.6.5, the VSWR and RF insertion loss shall

be as specified in the specification sheet.

3.8 Vibration. When adapters are tested as specified in 4.6.6, the VSWR and RF insertion loss shall be as

specified in the specification sheet, and the pressurization shall be as specified in 3.6.

3.9 Salt atmosphere (corrosion). When adapters are tested as specified in 4.6.7, there shall be no destructive

corrosion or pitting. Destructive corrosion is any type of corrosion which in any way interferes with mechanical or

electrical performance of the adapter.

3.10 Dielectric withstanding voltage (coaxial end). When adapters are tested as specified in 4.6.8, there shall be

no evidence of breakdown.

3.11 Gauge. Adapters shall withstand the gauge test specified in 4.6.9, as specified for the applicable class.

3.12 Marking. Flanges shall be marked in accordance with MIL-STD-130, with the PIN (see 1.3 and 3.1) and the

manufacturer s code symbol. The end plate shall include the frequency band, RF insertion loss, and VSWR of the

particular adapter (see 3.1). All markings shall withstand normal abuse and be legible for the life of the adapter. The

height of the PIN shall be appropriately sized to correspond with the area to be marked (from .125 inch to .250 inch, if

part marking area permits), with an absolute minimum of .03125 inch high characters in all cases. The PIN shall be

comparable in height to the manufacturer s name or code symbol. Marking shall be applied directly on the adapter in

the location specified (see 3.1).

3.13 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally

preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the

operational and maintenance requirements, and promotes economically advantageous life cycle costs.

3.14 Workmanship. Adapters shall be processed in such a manner as to be uniform in quality, and all surfaces

shall be free from pits, corrosion, cracks, rough edges, chips, burrs, scratches, flaws and other defects that will affect

life, serviceability, or appearance.