Test Report DFS Part 2

FCC ID: XKB-AXICLWBT

Test Report

Download: PDF
FCCID_4223768

FCC RF Test Report Report No. : FZ741007 DYNAMIC FREQUENCY SELECTION DFS Test Report APPLICANT : Quectel Wireless Solutions Co., Ltd. EQUIPMENT : LTE Module BRAND NAME : Quectel MODEL NAME : SC20-A FCC ID : XMR201706SC20A STANDARD : FCC Part 15 Subpart E CLASSIFICATION : (NII) Unlicensed National Information Infrastructure The product was received on Apr. 10, 2017 and completely tested on Jun. 07, 2017. We, Sporton International (KunShan) INC., would like to declare that the tested sample has been evaluated in accordance with the procedures and shown to be compliant with the applicable technical standards. The test results in this report apply exclusively to the tested model / sample. Without written approval of Sporton International (KunShan) INC., the test report shall not be reproduced except in full. Prepared by: James Huang / Manager Approved by: Jones Tsai / Manager Sporton International (KunShan) INC. No.3-2, Pingxiang Road, Kunshan Development Zone, Jiangsu, China Sporton International (KunShan) INC. Page Number : 1 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 TABLE OF CONTENTS 1 GENERAL DESCRIPTION .......................................................................................................................... 5 1.1 Applicant ........................................................................................................................................... 5 1.2 Manufacturer ..................................................................................................................................... 5 1.3 Feature of Equipment Under Test .................................................................................................... 5 1.4 Product Specification of Equipment Under Test ............................................................................... 5 1.5 Testing Site ....................................................................................................................................... 6 1.6 Applied Standards ............................................................................................................................ 6 1.7 Support Unit used in test configuration and system ......................................................................... 6 1.8 Test tool software version ................................................................................................................. 6 2 REQUIREMENTS AND PARAMETERS FOR DFS TEST .......................................................................... 7 2.1 Applicability of DFS Requirements ................................................................................................... 7 2.2 Interference Threshold values, Master or Client incorporating In-Service Monitoring ..................... 9 2.3 DFS Response requirement values ................................................................................................ 10 2.4 Short Pulse Radar Test Waveforms ............................................................................................... 11 3 CALIBRATION SETUP AND DFS TEST RESULTS ................................................................................ 12 3.1 Calibration of Radar Waveform ...................................................................................................... 12 3.2 In-Service Monitoring: Channel Move Time, Channel Closing Transmission Time and Non-Occupancy Period ................................................................................................................... 14 4 LIST OF MEASURING EQUIPMENT ........................................................................................................ 20 APPENDIX A. SETUP PHOTOGRAPHS Sporton International (KunShan) INC. Page Number : 2 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 REVISION HISTORY REPORT NO. VERSION DESCRIPTION ISSUED DATE FZ741007 Rev. 01 Initial issue of report Aug. 11, 2017 Sporton International (KunShan) INC. Page Number : 3 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 SUMMARY OF DYNAMIC FREQUENCY SELECTION TEST Bandwidth UNII and Description Measured Limit Result Channel Channel Move Time 575.219 ms 10 sec Pass UNII Band 2-A 5250-5350MHz 40MHz <200ms + 200 ms + Channel Closing & (CH102) 4.0 ms aggregate of 60 ms over Pass Transmission time UNII Band 2-C 5510MHz (aggregate) remaining 10 s period 5470-5725MHz Non-Occupancy No transmission Period and Client or Beacons 30 minutes Pass Beacon Test occurred Note: Since the product is client without radar detection function, only Channel Move Time, Channel Closing Transmission Time and Non-Occupancy Period Test are required to be performed. Sporton International (KunShan) INC. Page Number : 4 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 1 General Description 1.1 Applicant Quectel Wireless Solutions Co., Ltd. 7th Floor, Hongye Building, No.1801 Hongmei Road, Xuhui District, Shanghai 200233, China 1.2 Manufacturer Quectel Wireless Solutions Co., Ltd. 7th Floor, Hongye Building, No.1801 Hongmei Road, Xuhui District, Shanghai 200233, China 1.3 Feature of Equipment Under Test Product Feature Equipment LTE Module Brand Name Quectel Model Name SC20-A FCC ID XMR201706SC20A GSM/GPRS/EGPRS/WCDMA/HSPA/DC-HSDPA/ HSPA+(16QAM uplink is not supported)/LTE/ EUT supports Radios application WLAN 2.4GHz 802.11b/g/n HT20/HT40 WLAN 5GHz 802.11a/n HT20/HT40/ Bluetooth v3.0 + EDR/Bluetooth v4.1 LE HW Version R1.0 SW Version SC20ASAR04A03H8G EUT Stage Identical Prototype Remark: The above EUT's information was declared by manufacturer. Please refer to the specifications or user's manual for more detailed description. 1.4 Product Specification of Equipment Under Test Product Specification subjective to this standard DFS Function Client without radar detection function 5260 MHz ~ 5320 MHz Tx/Rx Channel Frequency Range 5500 MHz ~ 5700 MHz <5260 MHz ~ 5320 MHz> 802.11a 802.11n HT20 802.11n HT40 EUT support WLAN function <5500 MHz ~ 5700 MHz > 802.11a 802.11n HT20 802.11n HT40 Type of Modulation OFDM (BPSK / QPSK / 16QAM / 64QAM) Sporton International (KunShan) INC. Page Number : 5 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 1.5 Testing Site Test Site Sporton International (KunShan) INC. No.3-2, Pingxiang Road, Kunshan Development Zone, Jiangsu, China Test Site Location TEL: +86-0512-5790-0158 FAX: +86-0512-5790-0958 Sporton Site No. Test Site No. DFS01-KS 1.6 Applied Standards According to the specifications of the manufacturer, the EUT must comply with the requirements of the following standards:  FCC Part 15 Subpart E  FCC KDB 905462 D02 UNII DFS Compliance Procedures New Rules v02  FCC KDB 905462 D03 UNII Clients Without Radar Detection New Rules v01r02 Remark: All test items were verified and recorded according to the standards and without any deviation during the test. 1.7 Support Unit used in test configuration and system Item Equipment Trade Name Model Name FCC ID HW / FW Version Power Cord HW: v02 1. WLAN AP Cisco Air-AP1262N-A-K9 LDK102073 Shielded, 1.8 m FW: 12.4(25d)JA1 AC I/P: Unshielded, 1.2 m 2. Notebook Lenovo Edge E335 PPD-AR5B95 N/A DC O/P: Shielded, 1.8 m 1.8 Test tool software version Item Trade Name Model Name FW Version 1. KEY-SIGHT N7607B Signal Studio 3.0.0.0 Sporton International (KunShan) INC. Page Number : 6 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 2 Requirements and Parameters for DFS Test 2.1 Applicability of DFS Requirements EUT is client and operates as client without radar detection function. Table 1: Applicability of DFS Requirements Prior to Use of a Channel Operational Mode Client Client With Requirement Master Without Radar Radar Detection Detection Non-Occupancy Period Yes Not required Yes DFS Detection Threshold Yes Not required Yes Channel Availability Check Time Yes Not required Not required U-NII Detection Bandwidth Yes Not required Yes Table 2: Applicability of DFS requirements during normal operation Operational Mode Client Client Requirement Master Without Radar With Radar Detection Detection DFS Detection Threshold Yes Not required Yes Channel Closing Transmission Time Yes Yes Yes Channel Move Time Yes Yes Yes U-NII Detection Bandwidth Yes Not required Yes Client Beacon Test N/A Yes Yes Sporton International (KunShan) INC. Page Number : 7 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 Operational Mode Additional requirements for devices Master or Client with multiple bandwidth modes Client With Without Radar Detection Radar Detection U-NII Detection Bandwidth and All BW modes Not required Statistical Performance Check must be tested Test using the widest Channel Move Time and Channel Test using widest BW BW mode available Closing Transmission Time mode available for the link All other tests Any single BW mode Not required Note Frequencies selected for statistical performance check (Section 7.8.4) should include several frequencies within the radar detection bandwidth and frequencies near the edge of the radar detection bandwidth. For 802.11 devices it is suggested to select frequencies in each of the bonded 20 MHz channels and the channel center frequency. Sporton International (KunShan) INC. Page Number : 8 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 2.2 Interference Threshold values, Master or Client incorporating In-Service Monitoring Maximum Transmit Power Value (see notes 1 and 2) ≥ 200 milliwatt -64 dBm < 200 milliwatt -62 dBm Note 1: This is the level at the input of the receiver assuming a 0 dBi receive antenna. Note 2: Throughout these test procedures an additional 1 dB has been added to the amplitude of the test transmission waveforms to account for variations in measurement equipment. This will ensure that the test signal is at or above the detection threshold level to trigger a DFS response. The radar Detection Threshold, lowest antenna gain is the parameter of Interference radar DFS detection threshold, The Interference Detection Threshold is the ( -62dBm) + (0) [dBi]+ 1 dB= -61 dBm. Sporton International (KunShan) INC. Page Number : 9 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 2.3 DFS Response requirement values Parameter Value Non-occupancy period Minimum 30 minutes Channel Availability Check Time 60 seconds Channel Move Time 10 seconds See Note 1. Channel Closing Transmission Time 200 milliseconds + an aggregate of 60 milliseconds over remaining 10 second period. See Notes 1 and 2. U-NII Detection Bandwidth Minimum 100% of the 99% power bandwidth See Note 3. Note 1: The instant that the Channel Move Time and the Channel Closing Transmission Time begins is as follows: • For the Short pulse radar Test Signals this instant is the end of the Burst. • For the Frequency Hopping radar Test Signal, this instant is the end of the last radar Burst generated. • For the Long Pulse radar Test Signal this instant is the end of the 12 second period defining the radar transmission. Note 2: The Channel Closing Transmission Time is comprised of 200 milliseconds starting at the beginning of the Channel Move Time plus any additional intermittent control signals required to facilitate Channel changes (an aggregate of 60 milliseconds) during the remainder of the 10 second period. The aggregate duration of control signals will not count quiet periods in between transmissions. Note 3: During the U-NII Detection Bandwidth detection test, radar type 0 is used and for each frequency step the minimum percentage of detection is 90%. Measurements are performed with no data traffic. Sporton International (KunShan) INC. Page Number : 10 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 2.4 Short Pulse Radar Test Waveforms As the EUT is a Client Device with no Radar Detection, only one type radar pulse is required for the testing. Radar Pulse type 0 was used in the evaluation of the Client device for the purpose of measuring the Channel Move Time and the Channel Closing Transmission Time. Minimum Pulse Radar Percentage of Minimum Width PRI (µsec) Number of Pulses Type Successful Trials (µsec) Detection 0 1 1428 18 60% 30 Test A 1 1 60% 30 Test B 2 1-5 150-230 23-29 60% 30 3 6-10 200-500 16-18 60% 30 4 11-20 200-500 12-16 60% 30 Aggregate (Radar Types 1-4) 80% 120 Test A: 15 unique PRI values randomly selected from the list of 23 PRI values in Table 5a Test B: 15 unique PRI values randomly selected within the range of 518-3066 μsec, with a minimum increment of 1 μsec, excluding PRI values selected in Test A A minimum of 30 unique waveforms are required for each of the short pulse radar types 2 through 4. For short pulse radar type 1, the same waveform is used a minimum of 30 times. If more than 30 waveforms are used for short pulse radar types 2 through 4, then each additional waveform must also be unique and not repeated from the previous waveforms. If more than 30 waveforms are used for Short Pulse Radar Type 1, then each additional waveform is generated with Test B and must also be unique and not repeated from the previous waveforms in Tests A or B. The aggregate is the average of the percentage of successful detections of short pulse radar types 1-4. Sporton International (KunShan) INC. Page Number : 11 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 3 Calibration Setup and DFS Test Results 3.1 Calibration of Radar Waveform 3.1.1 Radar Waveform Calibration Procedure The Interference Radar Detection Threshold Level is (-62dBm) + (0) [dBi]+ 1 dB= -61dBm that had been taken into account the output power range and antenna gain. The following equipment setup was used to calibrate the radiated Radar Waveform. A vector signal generator was utilized to establish the test signal level for radar type 0. During this process there were no transmissions by either the Master or Client Device. The spectrum analyzer was switched to the zero span (Time Domain) at the frequency of the Radar Waveform generator. Peak detection was used. The spectrum analyzer resolution bandwidth (RBW) and video bandwidth (VBW) were set to 3 MHz to measure the type 0 radar waveform. The spectrum analyzer had offset -5.82dB to compensate receiving horn antenna gain 10.32dBi and RF cable loss 4.5dB. The vector signal generator amplitude was set so that the power level measured at the spectrum analyzer was (-62dBm) + (0) [dBi]+ 1 dB= -61 dBm. Capture the spectrum analyzer plots on short pulse radar waveform. 3.1.2 Radiated Calibration Setup 3.1.3 Calibration Deviation There is no deviation with the original standard. Sporton International (KunShan) INC. Page Number : 12 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 3.1.4 Radar Waveform Calibration Result <40MHz / 5510 MHz> Radar Type 0 Radar / DFS detection threshold level and the burst of pulses on the Channel frequency Sporton International (KunShan) INC. Page Number : 13 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 3.2 In-Service Monitoring: Channel Move Time, Channel Closing Transmission Time and Non-Occupancy Period 3.2.1 Limit of In-Service Monitoring The EUT has In-Service Monitoring function to continuously monitor the radar signals, If radar is detected, it must leave the channel (Shutdown). The Channel Move Time to cease all transmissions on the current Channel upon detection of a Radar Waveform above the DFS Detection Threshold within 10 sec. The total duration of Channel Closing Transmission Time is comprised of 200 milliseconds starting at the beginning of the Channel Move Time plus any additional intermittent control signals required to facilitate Channel changes (an aggregate of 60 milliseconds) during the remainder of the 10 second period. The aggregate duration of control signals will not count quiet periods in between transmissions. Non-Occupancy Period time is 30 minute during which a Channel will not be utilized after a Radar Waveform is detected on that Channel. The non-associated Client Beacon Test is during the 30 minutes observation time. The EUT should not make any transmissions in the DFS band after EUT power up. Sporton International (KunShan) INC. Page Number : 14 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 3.2.2 Test Procedures 1. The radar pulse generator is setup to provide a pulse at frequency that the Master and Client are operating. A type 0 radar pulse with a 1us pulse width and a 1428 us PRI is used for the testing. 2. The vector signal generator is adjusted to provide the radar burst (18 pulses) at a level of approximately -62dBm at the antenna of the Master device. 3. A trigger is provided from the pulse generator to the DFS monitoring system in order to capture the traffic and the occurrence of the radar pulse. 4. A U-NII device operating as a Client Device will associate with the Master at Channel. The MPEG file “TestFile.mpg” specified by the FCC is streamed from the “file computer” through the Master to the Client Device and played in full motion video using Media Player Classic Ver. 6.4.8.6 in order to properly load the network for the entire period of the test. 5. When a radar Burst with a level equal to the DFS Detection Threshold + 1dB is generated on the Operating Channel of the U-NII device. At time T0 the Radar Waveform generator sends a Burst of pulse of the radar waveform at Detection Threshold + 1dB. 6. Observe the transmissions of the EUT at the end of the radar Burst on the Operating Channel. Measure and record the transmissions from the EUT during the observation time (Channel Move Time). One 12 seconds plot is reported for the Short Pulse Radar Types 1. The plot for the Short Pulse Radar Types start at the end of the radar burst. The Channel Move Time will be calculated based on the zoom in 600ms plot of the Short Pulse Radar Type. 7. Measurement of the aggregate duration of the Channel Closing Transmission Time method. With the spectrum analyzer set to zero span tuned to the center frequency of the EUT operating channel at the radar simulated frequency, peak detection, and max hold, the dwell time per bin is given by: Dwell (0.4ms)= S (12000ms) / B (30000); where Dwell is the dwell time per spectrum analyzer sampling bin, S is the sweep time and B is the number of spectrum analyzer sampling bins. An upper bound of the aggregate duration of the intermittent control signals of Channel Closing Transmission Time is calculated by: C (ms)= N X Dwell (0.4 ms); where C is the Closing Time, N is the number of spectrum analyzer sampling bins (intermittent control signals) showing a U-NII transmission and Dwell is the dwell time per bin. 8. Measure the EUT for more than 30 minutes following the channel move time to verify that no transmissions or beacons occur on this Channel. Sporton International (KunShan) INC. Page Number : 15 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 3.2.3 Test Setup Radiated Test Setup Photo 3.2.4 Test Deviation There is no deviation with the original standard. Sporton International (KunShan) INC. Page Number : 16 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 3.2.5 Result of Channel Move Time, Channel Closing Transmission Time and Non-Occupancy Period for Client Beacon Test Test Mode : Client without radar detection Temperature : 23.6℃ Test Engineer : George Peng Relative Humidity : 44% BW / Channel Test Item Test Result Limit Pass/Fail Channel Move Time 575.219ms ＜ 10s Pass 200ms + 40MHz / 5510MHz Channel Closing Transmission Time ＜ 260ms Pass 3.2 ms Non-Occupancy Period ≥ 30 ≥ 30 min Pass Note: The Channel Closing Transmission Time is comprised of 200 milliseconds starting at the beginning of the Channel Move Time plus any additional intermittent control signals required to facilitate a Channel move (an aggregate of 60 milliseconds) during the remainder of the 10 seconds period. The aggregate duration of control signals will not count quiet periods in between transmissions. Sporton International (KunShan) INC. Page Number : 17 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 3.2.6 Channel Move Time, Channel Closing Transmission Time and Non-Occupancy Period for Client Beacon Test Plots <40MHz / 5510> In-Service Monitoring Channel Move Time & Channel Closing Transmission Time Non-associated test Non-Occupancy Period Master was off. (beacon test) Note: Dwell (0.4 ms)= Sweep Time (12000 ms) / Sweep Point Bins (30000) Channel Closing Transmission Time (200 + 3.2 ms) = 200 + Number (8 X Dwell (0.4 ms) < 260ms Sporton International (KunShan) INC. Page Number : 18 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 3.2.7 Data Traffic and Noise Floor Plots EUT data traffic (Client) Access Point data traffic (Master) Noise Floor (No transmission) Sporton International (KunShan) INC. Page Number : 19 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 4 List of Measuring Equipment Calibration Instrument Manufacturer Model No. Serial No. Characteristics Test Date Due Date Remark Date Spectrum DFS R&S FSV7 101472 10Hz~7GHz Jan. 19, 2017 Jun. 07, 2017 Jan. 18, 2018 Analyzer (DFS01-KS) Signal DFS Key-Sight N5182B MY56200417 100KHz ~ 6GHz Mar. 16, 2017 Jun. 07, 2017 Mar. 15, 2018 Generator (DFS01-KS) Signal DFS R&S SMJ100A 101908 100KHz ~ 6GHz Jan. 19, 2017 Jun. 07, 2017 Jan. 18, 2018 Generator (DFS01-KS) BEIJING XB-WDB-A- DFS Horn Antenna 040505 1GHz ~ 18GHz Jan. 22, 2017 Jun. 07, 2017 Jan. 21, 2018 XIBAO 18 (DFS01-KS) DFS Horn Antenna Com-Power AHA-118 701030 1GHz ~ 18GHz Oct. 24, 2016 Jun. 07, 2017 Oct. 23, 2017 (DFS01-KS) 52119/6 DFS RF cable SUCOFLEX 104;106 1GHz ~ 18GHz Oct. 10, 2016 Jun. 07, 2017 Oct. 09, 2017 MY9623/4 (DFS01-KS) Sporton International (KunShan) INC. Page Number : 20 of 20 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

FCC RF Test Report Report No. : FZ741007 Appendix A. Setup Photographs Sporton International (KunShan) INC. Page Number : A1 of A2 TEL : 86-0512-5790-0158 Report Issued Date : Aug. 11, 2017 FAX : 86-0512-5790-0958 Report Version : Rev. 01 FCC ID : XMR201706SC20A

Lo ‘av1 nomoas


Document Created: 2017-08-11 15:35:11
Document Modified: 2017-08-11 15:35:11
© 2024 FCC.report
This site is not affiliated with or endorsed by the FCC