H. Mark Bowers Archives | Page 2 of 2 |

Signal Leakage Patrolling at 700 MHz (Part Two)

By H. Mark Bowers — I believe this exercise raises the issue of how one is to perform accurate field strength measurements at higher LTE frequencies, where there is a low-level leak from the HFC plant (especially QAM).

Signal Leakage Patrolling at 700 MHz (PART ONE)

By H. Mark Bowers – Newer leakage detection systems are now available that measure at dual frequencies. While {the} present FCC required leakage detection frequency range remains in the 108 MHz to 137 MHz aeronautical band, measurements at higher frequencies can be revealing and may eventually be required

Scalar Testing (Part Two)

By H. Mark Bowers – In my last column we examined the importance of scalar testing, definitions of various terms, equipment required, and examined waveforms of actual insertion loss and isolation measurements using a spectrum analyzer and tracking generator.