MIL-PRF-1/1037E
2/
1,200 volts is at the crest of the audio wave.
3/
Up to 100 watts dissipation is allowable with forced-air cooling of the anode.
4/
For 100 percent modulation including dissipation resulting from power supplied by the modulator.
5/
The maximum instantaneous peak grid voltage for CW ratings shall be within the range of +30 to -400 volts.
6/
Maximum envelope temperature shall be limited to the specified maximum of 200GC under all operating conditions. Where
emphasis is placed on long life and reliability, lower tube envelope temperatures shall be used.
7/
Sufficient conduction or convection cooling shall be provided for all seals to limit temperatures in accordance with footnote 6/. For
anode cooling, an airflow of 12.5 cfm minimum shall be supplied at sea level, and with airflow at 25GC maximum directed with a
cowl as shown on Drawing 157-JAN. Where long life and consistent performance are factors, cooling in excess of minimum
requirements is normally beneficial. Unless otherwise specified, conduction cooling or an airflow of up to 12.5 cfm may be supplied
for anode cooling in all electrical tests involving application of heater voltage.
GENERAL:
Qualification - Required.
2
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