IB requests more information b

0351-EX-ST-2017 Text Documents

FCL Tech, Inc.

2017-05-22ELS_192306

Leann Nguyen

From: Carlos Flores
Sent: Thursday, May 18, 2017 9:53 AM
To: Bjornson, Christopher
Cc: Leann Nguyen; Jeanette Spriggs; Kathyrn Medley; Paul Blais; Jose Trevino; Chip Fleming
Subject: RE: Coordination for 351-EX-ST-2017

Hi Chris,

There is concern with the ground to rooftop transmissions since this is the Ka satellite uplinks of license operators and
since FCL provide ranges for the azimuth and elevation of their antennas, this test could potentially point towards the
GSO arc or equatorially to O3b NGSO satellite and potentially cause harmful interference.

From my original email below, it indicated that we have concerns of potential interference to our satellite uplink from
the experimental antennas transmitting in the 27.5‐29.7 GHz and 29.7‐30 GHz band in a ground‐to rooftop direction
with ERP values of 767 W and 48,434 Watts.

We will need more detail antenna information for these operations since they are pointing up in the same direction as
our satellite uplinks.

Frequency Direction Az (deg) Elevation (deg)
29.7-32 GHz Ground to rooftop +/-180 -20/70
27.5-29.7 GHz Ground to rooftop +/-180 -20/70

I will discuss this internally with other satellite folks and will get back to you. We may need a teleconference with FCL to
get additional information and clarification.

Thanks,
Carlos

From: Bjornson, Christopher [mailto:Cbjornso@steptoe.com]
Sent: Wednesday, May 17, 2017 6:12 PM
To: Carlos Flores <Carlos.Flores@fcc.gov>
Cc: Leann Nguyen <Leann.Nguyen@fcc.gov>; Jeanette Spriggs <Jeanette.Spriggs@fcc.gov>
Subject: RE: Coordination for 351‐EX‐ST‐2017

Carlos:
Below are the ranges. Please note that the 24.0-27.5 GHz band is used from rooftop-to-ground.

Frequency Direction Az (deg) Elevation (deg)
29.7-32 GHz Ground to rooftop +/-180 -20/70
27.5-29.7 GHz Ground to rooftop +/-180 -20/70
24.0-27.5 GHz Rooftop to ground +/-180 -90/-20
18-20 GHz Rooftop to ground +/-180 -90/-20

Please let us know if you have any questions or need anything else.
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Sincerely,
Chris

Christopher R. Bjornson
Steptoe & Johnson LLP
1330 Connecticut Avenue, N.W.
Washington, D.C. 20036
Phone: 202.429.3059
e-mail: cbjornson@steptoe.com

From: Carlos Flores [mailto:Carlos.Flores@fcc.gov]
Sent: Friday, May 05, 2017 2:06 PM
To: Bjornson, Christopher
Cc: Leann Nguyen; Jeanette Spriggs
Subject: RE: Coordination for 351-EX-ST-2017

Hi Chris,

Sorry, but I’m a bit confuse of the directionality of frequency range.
Could please have FCL fill in the ??? below so we have a better understanding of each frequency range the antennas will
be pointing in their AZ and Elev.

Frequency Direction Az (deg) Elevation (deg)

29.7‐32 GHz Ground to rooftop ??? ???
27.5‐29.7 GHz Ground to rooftop ??? ???
24.0‐27.5 GHz Ground to rooftop ??? ???

18‐20 GHz Rooftop to ground ??? ???

Thank you,
Carlos

From: Bjornson, Christopher [mailto:Cbjornso@steptoe.com]
Sent: Friday, May 05, 2017 11:25 AM
To: Carlos Flores <Carlos.Flores@fcc.gov>
Cc: Leann Nguyen <Leann.Nguyen@fcc.gov>; Jeanette Spriggs <Jeanette.Spriggs@fcc.gov>
Subject: RE: Coordination for 351‐EX‐ST‐2017

Carlos:
The range of CPE pointing angles is:

Azimuth +/-180
Elevation -20/70

Please let us know if you have any questions.
Sincerely,
2

Chris

Christopher R. Bjornson
Steptoe & Johnson LLP
1330 Connecticut Avenue, N.W.
Washington, D.C. 20036
Phone: 202.429.3059
e-mail: cbjornson@steptoe.com

From: Carlos Flores [mailto:Carlos.Flores@fcc.gov]
Sent: Friday, April 07, 2017 8:28 AM
To: Bjornson, Christopher
Cc: Leann Nguyen; Jeanette Spriggs
Subject: RE: Coordination for 351-EX-ST-2017

Chris,

Thank you for this information.

We will still need the exact pointing direction (azimuth and elevation) of the transmit antennas in the 27.5‐29.7 GHz and
29.7‐30 GHz bands.

Carlos

From: Bjornson, Christopher [mailto:Cbjornso@steptoe.com]
Sent: Thursday, April 06, 2017 3:10 PM
To: Carlos Flores <Carlos.Flores@fcc.gov>
Cc: Leann Nguyen <Leann.Nguyen@fcc.gov>; Jeanette Spriggs <Jeanette.Spriggs@fcc.gov>
Subject: RE: Coordination for 351‐EX‐ST‐2017

Contains Highly Confidential Attachment

Carlos:
Thanks for getting in touch. Attached is additional information on the antennas. The antenna for the 24-27.5 GHz
operations will be pointing from the roof to the ground. Please let me know if you need anything else.
Sincerely,
Chris

Christopher R. Bjornson
Steptoe & Johnson LLP
1330 Connecticut Avenue, N.W.
Washington, D.C. 20036
Phone: 202.429.3059
e-mail: cbjornson@steptoe.com

3

From: Carlos Flores [mailto:Carlos.Flores@fcc.gov]
Sent: Thursday, April 06, 2017 1:26 PM
To: Bjornson, Christopher
Cc: Leann Nguyen; Jeanette Spriggs
Subject: RE: Coordination for 351-EX-ST-2017

Hello Chris,

IB/SD has reviewed the response to our questions and we have concerns of potential interference to our satellite uplink
from the experimental antennas transmitting in the 27.5‐29.7 GHz and 29.7‐30 GHz band in a ground‐to rooftop
direction with ERP values of 767 and 48,434 Watts.

We will need more detail antenna information for these operations since they are pointing up in the same direction as
our satellite uplinks. A presentative antenna pattern would be very useful and the exact pointing direction of the
transmit antenna 27.5‐29.7 GHz and 29.7‐30 GHz band.

Also, we would need to know the antenna pointing direction for the 24‐27.5 GHz band operations.

Thanks,
Carlos Flores
FCC/IB/SatDiv

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Document Created: 2017-05-22 11:23:50
Document Modified: 2017-05-22 11:23:50

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