Appendix F

Final Comprehensive Assessment

Forty questions covering the full book. Work them cold, then score against the key at the end. The scoring guide tells you where you stand.

  1. The fundamental architectural difference between a swept analyzer and an RTSA is that the RTSA: A. Uses smaller knobs   B. Digitizes the entire RTBW continuously and processes overlapping FFTs   C. Has a brighter display   D. Costs less
  2. POI of 10 nanoseconds is achieved through: A. Software only   B. Hardware peak detection plus deep parallel FFT processing   C. Faster knob rotation   D. Cheaper ADCs
  3. The flagship SPECTRAN V6 PLUS 2000XA-6 maximum optional RTBW is: A. 80 MHz   B. 245 MHz   C. 490 MHz   D. 2 GHz
  4. Friis's formula for cascade noise figure says: A. Noise figure of every stage is equally important   B. The first stage with sufficient gain dominates the system noise figure   C. The last stage matters most   D. Gain cancels noise
  5. Quadrature (I/Q) sampling at the bandwidth requires what fraction of the sample rate of real sampling at twice the carrier? A. The same   B. Roughly 1/(carrier/bandwidth) lower   C. Twice as much   D. Independent of carrier
  6. Image rejection ratio (IRR) for I/Q imbalance combines amplitude and phase errors as: A. Their sum   B. Approximately 4 / (epsilon^2 + phi^2)   C. Their product   D. Independent quantities
  7. SigMF is: A. A proprietary file format   B. An open metadata standard pairing JSON sidecar with raw I/Q data   C. A modulation type   D. A cellular standard
  8. Welch's method reduces variance in PSD estimates by: A. Faster sampling   B. Averaging multiple windowed periodograms   C. Using narrower windows   D. Skipping FFTs
  9. Flat-top window is the right choice for: A. Burst detection   B. Accurate amplitude measurement (minimal scalloping)   C. Maximum frequency resolution   D. Lowest noise floor
  10. Blackman-Harris window provides: A. Wide main lobe with very low sidelobes (high dynamic range)   B. Narrow main lobe with high sidelobes   C. Same as rectangular   D. Best amplitude accuracy
  11. EVM for 5G NR 256-QAM at the transmitter is typically required to be better than: A. 30 percent   B. 10 percent   C. 3.5 percent   D. 0.01 percent
  12. A constellation rotated as a whole indicates: A. PA compression   B. Residual carrier frequency offset   C. Thermal noise only   D. Scalloping
  13. LFM chirps appear on a waterfall display as: A. Vertical stripes   B. Diagonal stripes whose slope encodes chirp rate   C. Horizontal stripes   D. Random scatter
  14. DRFM jammers retransmit modified versions of: A. Their own internal noise   B. The victim's own incoming signal   C. Pre-recorded waveforms   D. Random data
  15. The IsoLOG 3D DF antenna covers: A. Audio band only   B. 400 MHz to 40 GHz   C. 1 GHz to 6 GHz   D. 30-300 MHz
  16. The flagship IsoLOG 3D DF has 16 sectors and how many antennas? A. 16   B. 24   C. 32   D. 48
  17. TDOA geolocation requires clock synchronization across sensors of approximately: A. 1 second   B. 1 millisecond   C. 10-30 nanoseconds (GPSDO) or picoseconds (PTP)   D. 1 femtosecond
  18. Absolute amplitude accuracy for typical RTSAs across full frequency range is approximately: A. plus/minus 0.001 dB   B. plus/minus 0.5 to 2 dB   C. plus/minus 10 dB   D. None
  19. A measurement uncertainty budget combines individual error contributions by: A. Linear sum   B. Sum in quadrature with coverage factor   C. Maximum   D. Average
  20. Phase noise close to the carrier degrades dynamic range via: A. Scalloping   B. Reciprocal mixing   C. Clipping   D. Aliasing
  21. SFDR (spurious-free dynamic range) is the difference between: A. The noise floor and zero   B. The strongest signal and the strongest analyzer-generated spur   C. The maximum and minimum signals   D. Two carriers
  22. The SPECTRAN V6 ECO 100XA-6 is best suited for: A. Defense EW   B. Education and hobbyist use   C. mmWave 5G research   D. Counter-UAS at airports
  23. Cascading four SPECTRAN V6 PLUS units produces aggregate RTBW of: A. 245 MHz   B. 490 MHz   C. 1 GHz   D. 10 GHz
  24. RTSA Suite PRO supports custom processing blocks written in: A. Python and C++   B. JavaScript only   C. Assembly only   D. None
  25. Wi-Fi 7 maximum channel bandwidth is: A. 80 MHz   B. 160 MHz   C. 320 MHz   D. 1 GHz
  26. WMTS protected bands for medical telemetry include: A. 600 MHz cellular   B. 608-614 MHz, 1395-1400 MHz, 1429-1432 MHz   C. 2.4 GHz ISM   D. 5G n78
  27. GPS spoofing of ground vehicles at airports is best detected by: A. Visual inspection   B. Continuous GPS-band monitoring with DF capability   C. Cellular signal analysis   D. Acoustic sensors
  28. The fastest-growing RF career specialty in 2026 is: A. Spectrum compliance officer   B. RF cybersecurity specialist   C. Tower technician   D. Field engineer
  29. Counter-UAS deployments span all the following except: A. Airports   B. Prisons   C. Submarines underwater   D. Stadiums
  30. The smart-city sensor grid pattern uses RTSAs for: A. Air quality only   B. Continuous RF monitoring across the urban spectrum   C. Traffic light control   D. Pure data storage
  31. The "Wrapped Spectrum" view in RTSA Suite PRO is: A. A standard display from all RTSA vendors   B. An Aaronia patented feature wrapping wide spans across stacked lines   C. Only available on benchtop instruments   D. A modulation type
  32. The probability of intercept formula for a swept analyzer relates: A. ADC bits to bandwidth   B. Burst duration plus dwell time, divided by sweep time   C. Power to frequency   D. Window length to overlap
  33. ENBW (equivalent noise bandwidth) for a Hann window relative to the bin spacing is approximately: A. 0.5   B. 1.0   C. 1.5   D. 4.0
  34. The DRFM characterization in Case Study 8 measured a processing latency of: A. 12 nanoseconds   B. 1.2 microseconds   C. 12 microseconds   D. 1.2 milliseconds
  35. The classic mobile DF truck workflow is used by: A. Hospitals only   B. Spectrum regulators tracking pirate radios and unauthorized transmitters   C. Cellular operators only   D. Stadiums
  36. The 5G NR FR2 mmWave maximum channel bandwidth is: A. 100 MHz   B. 200 MHz   C. 400 MHz   D. 1 GHz
  37. Spectrum-as-a-Service business models include all the following except: A. Per-site monitoring contracts   B. Compliance-as-a-Service   C. Surgical procedures   D. Counter-UAS-as-a-Service
  38. The IsoLOG 3D DF tracking accuracy paired with SPECTRAN V6 PLUS is approximately: A. 30 degrees   B. 10 degrees   C. 1 degree   D. 0.001 degree
  39. RTSA-based monitoring is best characterized in 2026 as: A. A specialized niche tool   B. Becoming infrastructure across multiple sectors   C. Replaced by AI alone   D. Obsolete
  40. The common thread across all 12 RF employer sectors is: A. They all are ground-based   B. RF and spectrum used to be niche but is becoming central to most infrastructure-relevant industries   C. They are all defense   D. They are all university research

Final Assessment Answer Key

1.B 2.B 3.C 4.B 5.B 6.B 7.B 8.B 9.B 10.A
11.C 12.B 13.B 14.B 15.B 16.C 17.C 18.B 19.B 20.B
21.B 22.B 23.C 24.A 25.C 26.B 27.B 28.B 29.C 30.B
31.B 32.B 33.C 34.B 35.B 36.C 37.C 38.C 39.B 40.B

Scoring:

The book ends here in technical content. The remaining four appendices (G through J) provide reference material on education, employers, standards, and tools that turn this from a one-time read into a working desk reference.