Testing of Globalstar & Iridium satellite networks. Camas, Washington. Nov. & Dec. 2015

Purpose of Voice Calls:

1.) Observe maximum possible duration of voice calls on Iridium & Globalstar satellite phones under optimal conditions.

Purpose of Data Call: 1.) Measure actual data speed of Globalstar 1700 handheld satellite phone in portable docking kit

under optimal conditions.

Satellite Phone Test Location. Camas, Washington. View to all sides of horizon. Nov. & Dec. 2015.

4 Globalstar Phones Used

3 1700 Handheld Phones & Portable Docking Kit w/ helix antenna (white antenna on right). #’s 254-219-6929, 254-219-7038, 907-928-1365.

1 2900 fixed “tactical” phone w/ RJ11 jack. Phone # 254-240-9077.

Sample of Globalstar voice calls (G* phones do not broadcast caller ID.)

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Globalstar Voice Calls. Test Results.

4 ½ hours of Globalstar satellite constellation sampled for voice calls. Average length of maximum attainable Globalstar voice call was 41 min.

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Iridium Voice Calls. Test Results.

2 hours of Iridium satellite constellation sampled for voice calls. Average length of maximum attainable Iridium voice call was 20 minutes.

• Portland area works in favor of Globalstar customer from QoS perspective

• ~ 45° North Lat. is nearly ideal location for optimal satellite visibility• Relatively close proximity to gateway in High River, Alberta

• Average length of all Globalstar voice calls was 40 minutes.

• Overall, performance of Globalstar Generation 2 satellite system was “very good / excellent” for voice & data applications. 1st voice call lasted 1 ½ hours.

• The times & days of all Globalstar calls were made at random.

• In 1 case after G* call drop, took ~ 5 min. to reacquire satellite & register

• Results of the Globalstar calls were within the range of expectations.

Observations from Globalstar Voice Calls

Artists rendition of Globalstar Gen. 2 satellite

Observations from Iridium Voice Calls.• Portland area expected to produce high Quality of Service perspective.

• Longitude of `149W. Likely on same N/S orbital plane of the 1 available gateway in Tempe, AZ.

• Average length of all Iridium voice calls was 20 minutes.

• Overall, performance of Iridium system was “good/fair” for voice applications. 1st call lasted 52 minutes, w/ stable signal.

• However, 3 of the 6 calls dropped under 10 minutes (under ideal conditions.)

• Quick re-acquisition of satellite after dropped calls suggest:

• Satellites were likely overhead at time of call drop (as opposed to a gap in satellite coverage).

• If an Iridium satellite was present when the calls dropped, suggests its possible not all 48 beams in footprint performing to full potential.

Globalstar Data Test.

• Used Globalstar satellite phone 907-928-1365 in portable docking kit to laptop.

• Sent 500KB file without compression software to preserve integrity of results.

• #777 packet data connection was used. Call routed directly into Internet at gateway.Data flow generally begins with 5 seconds upon establishment of call.

• File was PDF format. 25 pg. in length. Mostly text. Some pictures & illustrations.

Globalstar Data Test

Actual file transmitted & Globalstar phone w/ docking kit used for test

Illustration of Globalstar packet data routing sequence.

• 25 pg. document transmitted in 8 min. 30 seconds.

• Same file would take 35 minutes on Iridium single-channel device

• Globalstar’s actual throughput demonstrated was ~ 8.5 kbp/s, slightly less than advertised 9.6 kbp/s.

• Actual throughput consistent w/ expectations due to “overhead” inherent in data calls. Overhead could have included TCP/IP headers, PPP/MLPP headers, & encoding.

Globalstar Data Test Results. Transmitting 500KB file.

Actual file transmitted w/ GSP 1700 phone.

Customers’ 10x benefit using Globalstar Data Services.

Financially, Globalstar customers benefit by a factor of 10-fold, due to 4x faster speed & 3x lower airtime cost than other handheld satellite phones.

Iridium & Globalstar Network Testing carried out by Donnie Hatch of Globalstar.

For additional questions, pls. contact at:

donnie.hatch@globalstar.comTel 503-307-5489Camas, Washington