• Mark Uncapher, on behalf of the TIA commented on 2015-11-19 11:54:55.076:
  The Telecommunications Industry Association supports the new test procedure for Bin 5 radars and appreciates the clarification on testing required to sufficiently assess the controls necessary for radar protection. TIA member companies will be ready to begin using the new procedure as soon as TCBs are able to support the new test.

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• David Case commented on 2015-11-04 16:32:23.23:
  Cisco has evaluated the latest version of the DFS test procedure and has determined that the test procedure will work with the current version of the chipsets. As NTIA has reviewed and accepted this updated procedure , this means they have determined by their acceptance that it would detect the radar in question, Cisco sees no need for further modifications unless we have issues in the field and NTIA determines that additional modifications are needed.

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• David Bare commented on 2015-10-28 16:44:13.183:
  For the proposed bin 5 procedures, is it necessary that all of the first subset of trails (10) be performed exactly at the center of the channel? Can these not be done randomly over a range such that they remain within the BW ensuring it not excced the 90% overlap portion of the radar frequency modulation. Perhaphs also take this further, cannot all 30 trials be done randomly so long as the radar frequency meets the requirement that 90% of the frequency modulation remain in the 99% BW.

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• William Chen commented on 2015-10-28 13:42:10.36:
  Dear FCC, For radar type 5, the pulse width is not a fixed value in one single trial. It may vary between 5 to 20 MHz from burst to burst as Table 6 and Table 11 of this KDB. Hence, Sporton recommend the formula for subset 2 and subset 3 at KDB page 41/42 - the center frequency of the signal generator for each trial is calculated by: FL + (0.4 * Chirp Width [in MHz]) and FH – (0.4 * Chirp Width [in MHz]) shall be revised as following: FL + (0.4 * maximum Chirp Width [in MHz]) and FH – (0.4 * maximum Chirp Width [in MHz])

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• Michael Green commented on 2015-10-27 13:57:31.706:
  Qualcomm strongly supports the revised test procedure since it provides the necessary clarification for testing Bin 5 radar detection, and we believe it sufficiently protects these radar systems. We recommend that the FCC make the following modifications to the text to improve clarity: a) Figures 18-20 on pages 40-41: Ensure that the terms in the legend for each of these Figures match the labels on the x-axis of the graph to prevent confusion. For example, use either “FL” or “FOBL” (and “FH” or “FOBH”) in both places for clarity. b) Page 41 & 42: For the formula for calculating the center frequency of the chirp, please add a note stating the result should be rounded to an integer value (in MHz) in a manner that maximizes the amount of overlap of the chirp signal into the occupied bandwidth. -End of comment.

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Note: It is important to understand that the staff guidance provided in the KDB is intended to assist the public in following Commission requirements and does not constitute rules. Accordingly, the guidance is not binding on the Commission and will not prevent the Commission from making a different decision in any matter that comes to its attention for resolution.