TB 9-6625-1932-35
(17) Disconnect fixed short from equipment setup (fig. 3). Record receiver system
readout indication (to include the + or - sign).
Figure 3. VSWR (coaxial TIs from 10 MHz to 18 GHz) - equipment setup.
(18) Zero power meter No. 1 and connect TI to VSWR bridge No. 1 (No. 2). Record
receiver system indication.
(19) Perform (20) below if value recorded in (17) above is -(negative), or (21) below if
value recorded in (17) above is +(positive).
(20) Divide value recorded in (17) above by 2. Invert sign and add to value recorded
in (18) above. Record sum as return loss.
EXAMPLE A: If value of (17) above is -1.425.
(a) Divide -1.425 by 2 = -0.712.
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