(F)Element 8-46 Equipment Failures-3 Flashcards
1
Q
Silicon crystals are used in RADAR mixer and detector stages. Using an ohmmeter, how might a crystal be checked to determine if it is functional?
A
Its resistance should be low in one direction and high in the opposite direction.
2
Q
In a RADAR unit, if the crystal mixer becomes defective, replace the:
A
The crystal and the TR tube.
3
Q
An increase in magnetron current that coincides with a decrease in power output is an indication of what?
A
The external magnet weakening.
4
Q
It is reported that the RADAR is not receiving small targets. The most likely causes are:
A
Magnetron, IF amplifier, or receiver tuning.
5
Q
A high magnetron current indicates a/an:
A
Defective external magnetic field
6
Q
Low or no mixer current could be caused by
A
All of the above.
