Incoming generated [Sep 5 2018]

1508-EX-ST-2018 Correspondence

Georgia Institute of Technology

2018-09-05ELS_215315

From: Breneman Whitfield

To: Doug Young
Date: September 05, 2018

Subject: Request for Info - File # 1508-EX-ST-2018
----------------------------------------------------------------------------------------------------------------
Message:

Comments below in response to reference number 43689. Resubmitting to ensure reference number is
included in the response.

Yes. There is one ground site and two airborne. All sites use the same radios, the differences are in the
antenna configurations. The ground site uses a 22dBi dish, and the airborne use a 3dB omni. So, the
higher power emitter is the directional system on the ground. The ground site is located on Santa Rosa
Island at A15.

30deg23'13.63N
86deg48'30.20W

Normal altitudes are in the 6000 to 9000 feet MSL range. With the exception of launch and recovery (we
normally only conduct one flight per day), the UAS stay to the south over the water. So, the directional
antenna points south at almost all times. I can provide DD1494s for the radios if that would help. They're
tunable from 2200-2500MHz and are configurable for 5, 10, and 20MHz channels. I configure the channel
width based on the range and bandwidth needs for the test. We were instructed to request the
2200-2290MHz band by the spectrum manager at Eglin. The radios are CSMA, so they all operate with
the same center frequency and bandwidth. Please let me know what additional information is needed.

Thanks!

Document Created: 2018-09-05 14:33:08
Document Modified: 2018-09-05 14:33:08

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