Exhibit B
1.0
USABLE BANDWIDTH
Each transmission channel shall have
a minimum usable bandwidth of
36 MHz. Unless otherwise stated, all specifications herein shall be met over this frequency bandwidth.
2.0 FREQUENCY TRANSLATION & STABILITY
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The subsystem shall translate receive frequencies in the 6 GHz band to transmit frequencies in the 4 GHz band by a net frequency subtraction of 2225 MHz. Net frequency inversion from input to output shall not place. The net translation error including initial tolerance shall not exceed
10 parts in 106 over the operating lifetime.
The net short term frequency stability shall be such that noise and spurious frequency modulation (including TWTA contributions) do not exceed 12 KHz band. The net short term frequency 105 Hz rms in the 100 Hz to stability shall be such that noise and spurious frequency modulation excluding TWTA contributions do not exceed 30 Hz rms in the 100 Hz to 12 KHz band.
3.0
FREQUENCY RESPONSE
3.1 Front end Bandpass Filter
A bandpass filter shall be provided at the input to each preamplifier or redundant pair to prevent the reception of out-of-band frequencies, which the band of 5925 to 6425 MHz. are defined as the frequencies outside of
Beyond this band, the response shall decrease at least 20 dB at 160 MHz from the edges of the band and 30 dB at and beyond all frequencies 200 MHz from the edges of the band. In addition, at least 55 dB of suppression shall be provided at the input of the receiver to input frequencies in the band of 3700 to 4200 MHz.
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3.2 Input Multiplexer
The frequency response of each input multiplexer channel from the RF input to the RF output shall be within the limits shown in Figure B-8.
3.3 Output Multiplexer
The frequency response of each input multiplexer channel from the RF input to the RF output shall be within the limits shown in Figure B-9.
3.4 Gain Slope
The maximum gain slope at any point of the usable bandwidth of any of the transmission channels shall not exceed the values stated in Table B-7.
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.B-32
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