COMMUNICATION SYSTEMS
What is the true designation for Link-4A?
TADIL-C
What RADAR unit converts the weak RF echo to a discernable video signal?
The Receiver
What is the typical gain of a parametric amplifier?
Approx. 20 dB
What is the periodicity of a Monthly (M) Check?
3 to 6 weeks
What is used to remove debris and sea life from the SW side of an electronic cooling water system?
Strainers
What is the nomenclature for JTIDS?
AN/URC-107(V)7
How many degrees out of phase with each other are the H and E fields?
90 degrees
How far is a Radar Mile?
12.36 picaseconds
What does SERT stand for?
Ships Electronic Readiness Team
What are the 2 types of strainers used in electronic cooling water systems?
Simplex and Duplex
What is the maximum number of possible tracks in Link-11?
4092
What maximum VSWR are broadband HF transmitting antennas designed to tolerate?
3:1 at 50 ohms
What are the 4 types of basic filters?
1. Low-pass
2. High-pass
3. Bandpass
4. Band Rejection
What are the 4 types of Casualty Reports
1. Initial
2. Update
3. Correct
4. Cancel
What is the normal output temperature range for most electronic equipment secondary cooling loops?
From 80 to 85 F
What number is reserved to designate a stacked net?
127
What is the term for the number of strikes per antenna rotation?
"Hits per scan"
What is the formula for the RMS value of a sine wave?
Enns=Ep x 0.707
Who funds and authorizes Title F ship alterations?
TYCOM
What are 3 different types of air compressors used for LP air systems?
1. Reciprocating (Piston)
2. Rotary (Screw)
3. Centrifugal
How many channels of covered message traffic are provided by the Fleet Satellite Broadcast subsystem?
15
What is the formula for a duty cycle of a RADAR?
Duty Cycle= PW x PRF
Speed of light= ____________ nautical miles per second
162,000
What is contained in Volume 5 of the shipboard Antenna System Manuals?
Antenna Data Sheets
What portable Nitrogen pressurizing kit is commonly used for pressurizing shipboard HF couplers and SSR-1 downconverters?
MK-260/U