NBWT

Dish diameter = 6 X Feed diameter = 0.31 X

illuminai ii Spillover

Feed Bio kage

4 dB

Icieney t least 15e} ' lower

S dB

6 dB

7 dB

8 dB

NRAO 85 foot Radiotelescope - dual-band feed at S-band Figure 30

Parabolic Dish f/D

210 ft. Parkes

0 0

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