MIL-PRF-1/1605C
TABLE I. Testing and inspection.
3/ The VSW R presented to the tube under test (TUT) by the driver or load shall not exceed 1.5:1 over the frequency
range of 2.7 to 2.9 GHz; 1.3:1 from 2.9 to 3.1 GHz; 1.5:1 from 3.1 to 3.4 GHz; and 2.0:1 from 3.4 to 3.5 GHz.
4/ First article inspection when required shall consist of performing all tests listed on this tube specification sheet and
MIL-PRF-1.
5/ The recommended value for operation shall be stamped on the identification plate of the tube.
6/ The pulse characteristics shall be as follows:
trv:
0.1 (min)
1.5 (max) µs
tfv:
0.1 (min)
5.0 (max) µs
No spike or ripple shall exceed ± 3 percent of the smooth peak value of voltage or current. Inverse voltage shall not
exceed 30 percent of the forward voltage.
7/ The level shall remain constant at all frequencies.
8/ The transverse or radial magnetic field shall not exceed 1 percent of the axial magnetic field.
9/ The tubes tested and acquired with this tube specification sheet shall be capable of shelf-life for a period of 12
months after date of shipment from the manufacturer's plant. Tubes placed in operation during this shelf-life period
shall meet all requirements of this tube specification sheet.
10/ Unless otherwise specified, the acceptance level for all tests listed under conformance inspection, shall be based
upon accept on zero (c = 0) sampling plan in accordance with MIL-PRF-1, table III.
11/ The tube shall be mounted with the cathode axis vertical and vibrated in a nonoperating condition as follows:
Exploratory: W ith a peak-to-peak amplitude and frequency range of:
5 to 15 Hz at .075 ± .012 inches.
16 to 25 Hz at .050 ± .008 inches.
26 to 33 Hz at .025 ± .004 inches.
Variable:
As specified in the exploratory test except that the dwell time at each frequency with observed
resonances shall be approximately 5 minutes.
Endurance: As specified in the variable test except that the dwell time shall be at least 2 hours duration.
The tube shall pass conformance inspection, part 1, upon completion of this test.
12/ The TUT shall be shocked three times in a direction along the cathode axis, the shock pulse shall be a half since
wave with a duration of 11 ms and an intensity of 50G. It shall also be mounted and shocked in the same manner
for three times in the other mutually perpendicular axes, the shock pulse having a duration of 11 ms and an intensity
of 25 G. The tube shall pass conformance inspection, part 1, upon completion of this test.
13/ The Ćθ/Ćepy value is computed from the difference between the phase shifts through the TUT at the two anode
voltage extremes divided by the total voltage change.
14/ Revision letters are not used in this revision to identify changes with respect to the previous issue, due to the
extensiveness of the changes.
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