MIL-PRF-1/1733A(NAVY)
NOTES:
1. Terminal has 1 inch (25.4 mm) -16 unified thread, class 2A fit, 0.380 inch (9.65 mm) long, and two holes 0.258 inch (6.55 mm) to
0.270 inch (6.86 mm) diameter, spaced 0.438 inch (11.13 mm) on centers.
2.
The holes in the filament, grid(1), and grid(2) coolant terminal connections, will accept the pins of the plug-and-cylinder
combination gage G1, shown on figure 5.
3.
Terminal has 1-3/4 inch (44.45 mm)-16 unified extra fine thread, class 2A fit, 0.380 inch (9.65 mm) long, two holes 0.508 inch
(12.90 mm) to 0.522 inch (13.26 mm) diameter, spaced 0.688 inch (17.48 mm) on centers, and an index hole 0.160 inch (4.06
mm) maximum diameter, spaced 0.344 inch (8.74 mm) from the center of the terminal.
4.
Holes in the anode coolant connections shall accept the pins of the plug-and-cylinder combination gage G2, shown on figure 6.
5.
Pressure from circuit contacts shall be exerted only over maximum length, AH, of designated contact areas of the anode or
grid(1) terminals.
6.
This diameter dimension is held only over a length of AH.
7.
Dimension L applies over length AB and AN, as indicated.
8.
The contact surfaces, BA-BA and BB-BB of the RF cathode terminals, shall be parallel within 0.060 inch (1.52 mm).
9.
Contact of the input end, RF cathode terminal, shall not be made at a diameter smaller than 4.060 inch (103.12 mm), nor greater
than 4.950 inch (125.73 mm).
10. To prevent excessive stress on the ceramic seal, a 15/16 inch (23.81 mm) open-end wrench shall be used to permit gripping the
terminal when removing or tightening the coolant connectors.
11. Contact of the output end, RF cathode terminal, shall not be made at a diameter smaller than 6.000 inches (152.40 mm). The
pressure exerted for this RF contact shall be limited to that necessary for good electrical contact. The mechanical force for the
cavity support and pressure seal shall be made at a diameter not less than 6.000 inches (152.40 mm). On the output end, RF
cathode terminal, there are four equally spaced 0.188 inch (4.78 mm) diameter holes on a circle having a diameter of 6.750
inches (171.45 mm). These holes are for tube manufacturing purposes only. Attention is called to the existence of these holes
so that equipment designers can avoid making a pressure seal or electrical contact at points which are coincident with these
holes. Mechanical clamping devices for the output cavity shall be designed so as to exert their clamping force across outer edge
of output-header flange.
12. Serial number is located on this surface between grid(2) and the insulated filament terminal.
13. Corners may be rounded or chamfered, but not to exceed .050 inch (1.27 mm).
14. Keep this 5-inch diameter annular-volume region clear. Do not allow circuit components (conductors or insulators) to protrude
into this region.
15. The output end shall accept the output end of gage G3, shown on figure 7. Proper acceptance is obtained when gage is seated
on the output end, RF cathode terminal, contact surface. The gage is properly seated when a 0.015 inch (0.38 mm) thickness
gage, 1/2 inch (12.70 mm) wide will not enter between the gage and the RF cathode contact surface. The pins on the 1.500 inch
(38.10 mm) movable section of the output end of gage G3, shall enter the anode coolant holes such that the height slot
represented by the 2.098 inch (53.29 mm) dimensions is below the shoulder of the gage, and the 2.219 inch (56.36 mm)
dimension is visible above the shoulder. The input end shall accept the input end of gage G3, shown on figure 7. Proper
acceptance is obtained when the gage is seated on the input end, RF cathode terminal surface, and the projecting guide pins of
the output end engage the mating holes of the input end. The gage is properly seated when a 0.015 inch (0.38 mm) thickness
gage, 1/2 inch (12.70 mm) wide will not enter between the gage and the RF cathode terminal contact surface. The pins on the
0.875 inch (22.23 mm) movable section of the input end shall enter the grid coolant holes such that the height slot represented by
the 2.379 inch (60.43 mm) dimension is below the shoulder of the gage, and the 2.559 inch (65.00 mm) dimension is visible
above the shoulder, when gage G3 is properly seated.
a.
Dimensions B, J, M, W, X. Z, AA, and AD shall vary only within the limits of the gage.
b.
The centerline through the grid(1) coolant connection holes will have a maximum angle of 2 degrees with
respect to the centerline of the anode coolant connection holes.
FIGURE 1. Outline drawing of electron tube type 8932 - Continued.
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