MIL-PRF-1/846M
TABLE I. Testing and inspection - Continued.
11/ With the tuning dial adjusted for a frequency of 9,000 MHz, an operating frequency of 9,600 MHz shall be
obtained by rotating the tuning shaft 64 ± 12 turns such that the large dial gear moves counterclockwise. A
frequency of 8,500 MHz shall be attained by turning the shaft 47 ± 6 turns in the opposite direction from the
9,000 MHz setting.
12/ With an airflow at standard atmospheric pressure of 25 cfm directed at the cooling fins from an orifice of 1.172
inches (29.77 mm) and 1.359 inches (34.53 mm) the rise above ambient specified shall not be exceeded. The
anode temperature shall be measured at that point indicated on figure 1. The ambient temperature shall be
approximately 50°C. The orifice shall be located .25 inch (6.35 mm) from the cooling fins.
13/ The TUT shall be vibrated at a frequency of 50 to 500 to 50 Hz during a 5-minute interval for each plane. The
sinusoidal displacement shall be adjusted to maintain acceleration at 5G.
14/ At the conclusion of this test, the TUT shall meet the requirements of method 4250, power output (1) and
method 4315, pulse stability (1).
15/ A cycle consists of two complete excursions each in opposite directions through the tuning range of the TUT.
The tuning shaft shall be continuously driven at a speed of approximately 650 rpm. The TUT shall meet end-of-
life requirements at completion of this test.
16/ The change in voltage required to maintain constant current shall be measured as the frequency is changed
from F1, 8,500 MHz to F5, 9,600 MHz.
5
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business