Q. A TR tube is used

A
To protect the high power transmitter
B
To protect receiver
C
To avoid arcing in waveguides
D
For None of these of the above
Solution:

T.R. tube (transmit/receive tube) is a blocking tube that
1) during the reception period, allows passage of the low-power signals from the antenna to the receiver; and

2) during the transmission period, protects the receiver from the high-power signals of the transmitter .

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