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1. (401) When using space diversity, the AN/TRC–170 receive antenna spacing should be a minimum
of
a. 10 wavelengths apart.
b. 25 wavelengths apart.
c. 50 wavelengths apart.
d. 100 wavelengths apart. |
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2. (401) Which type of diversity requires two antennas, two receivers, and two transmitters?
a. Polarization.
b. Crossband.
c. Frequency.
d. Space. |
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3. (401) In an AN/TRC–170 terminal, the quantity of digital group multiplexer units supplied and
their application are
a. different in the V2 and V3 systems.
b. identical in the V2 and V3 systems.
c. dependent on the mission and number of channels.
d. dependent on the deployment of the technical control. |
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4. (401) The MD–1026 digital data modem can interface up to four groups of
a. balanced non-return-to-zero (NRZ) signals.
b. conditioned diphase signals.
c. unbalanced NRZ signals.
d. isochronous signals. |
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5. (401) Which type of encryption device does full-duplex encryption of AN/TRC–170’s group or
supergroup mission traffic?
a. KY–68 digital secure voice terminal/phone.
b. KY–58 VINSON.
c. KG–84 dedicated loop encryption device.
d. KG–81 trunk encryption device. |
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6. (401) Digital voice orderwire traffic that originates at the AN/TRC–170’s voice orderwire control
unit is encrypted by the
a. KY–68 digital secure voice terminal/phone.
b. KY–58 VINSON encryption device.
c. KG–84 dedicated loop encryption device.
d. KG–81 trunk encryption device. |
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7. (401) Which jack field in the AN/TRC–170’s baseband patch panel provides timing and data
connections?
a. middle.
b. center.
c. upper.
d. lower. |
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8. (401) The tropospheric scatter modem processes mission traffic at data rates of 128 through 4,096
Kbps in the
a. 512 Kbps data rate family.
b. 576 Kbps data rate family.
c. 1,024 Kbps data rate family.
d. 1,152 Kbps data rate family. |
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9. (401) Which unit in the AN/TRC–170 terminal contains the rubidium standard?
a. Electrical frequency synthesizer.
b. Frequency subsystem unit.
c. Tropospheric scatter modem.
d. Transmitter-amplifier converter. |
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10. (401) The quick reaction antenna for the V3 AN/TRC–170 terminal uses
a. two 6-foot-diameter, linearly dual-polarized antennas.
b. four 6-foot-diameter, linearly dual-polarized antennas.
c. two 9.5-foot-diameter, linearly dual-polarized antennas.
d. four 9.5-foot-diameter, linearly dual-polarized antennas. |
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11. (402) The Tropo/Satellite Support Radio frequency coverage extends from
a. 4.4 to 5.25 GHz.
b. 7.25 to 8.4 GHz.
c. 14.4 to 15.25 GHz.
d. 17.25 to 18.4 GHz. |
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12. (402) The maximum distance a Tropo/Satellite Support Radio can operate with the 2-foot antenna
is
a. 10 miles.
b. 25 miles.
c. 100 miles.
d. 250 miles. |
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13. (402) In the Tropo/Satellite Support Radio’s baseband assembly, a 1-volt peak-to-peak input
signal results in how much frequency deviation in the transmitter?
a. ±4 MHz.
b. Less than ±4 MHz.
c. More than ±4 MHz.
d. No signal deviation. |
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14. (402) In the Tropo/Satellite Support Radio frequency assembly, what permits the transmitter and
receiver to be connected to the same antenna?
a. Circulator.
b. Combiner.
c. Coupler.
d. Hybrid. |
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15. (402) What is the intermediate frequency of the Tropo/Satellite Support Radio?
a. 70 MHz with a 10 MHz bandpass.
b. 70 MHz with a 20 MHz bandpass.
c. 700 MHz with a 10 MHz bandpass.
d. 700 MHz with a 20 MHz bandpass. |
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