Table Sband Performance Summary Of

Item

Specified performance

Axial ratio (boresight) VSWR (at back of dish) Beam alignment 3-dB beamwidth 6-dB beamwidth 10-dB beamwidth

>28.5 dB <1.5 dB <1.2:1 <0°6'0" 5.7° ± 0.5° 7.6° ± 0.5° 9.5° ± 0.5°

Axial ratio (boresight) VSWR (at back of dish) 3-dB beamwidth 6-dB beamwidth 10-dB beamwidth

>27.5 dB <2.0 dB <1.4:1 6° ± 0.5° 8.2° ± 0.5° 10.2° ±0.5°

TABLE 42.- X-BAND PERFORMANCE SUMMARY OF HGA AT 8415 MHz

Item

Spec i fied performance

Gain

Axial ratio

VSWR (at back of dish)

Beam alignment

3-dB beamwidth

6-dB beamwidth

10-dB beamwidth

>39.C dB <1.5 dB <1.2:1 <0°6'0" 1.6° * 0.5° 2.4° i 0.5° 2.6° 1 0.5°

DFRJ.- DFRJ's were provided to transfer the S-band and X-band rf signals across the AZ and EL axes of the HGA as shown in figures 156 and 31. The DFRJ were connected to the S-band semirigid coaxial cable and the X-band waveguide to form part of the transmission lines from the RFS to the HGA and from the XTXS to the HGA. Table 43 gives the performance characteristics of the DFRJ's

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