Figure 10-3 shows the harmonic power densities in relation to the allowable no-interference condition for commercial installations and radio astronomy obtained from Reference 10-1, pages RR-722, 23, 24 for commercial service and REP 224-2, page 437 for radio astronomy. The results can be summarized as follows: a. The second harmonic emission of the two klystrons will interfere with commercial installations unless an additional -22 dB harmonic filter is added. b. The second harmonic of the amplitron will interfere with radio astronomy (Class A) but not with commercial. c. The third harmonic of all three tubes will interfere with radio astronomy (Class A) but not with commercial. d. The fourth harmonic of all three tubes is below the level of radio astronomy (Class A).
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