1. Wireless Intercom
Overview
North America
V 4.2
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© 2013 CoachCmm LLC. Tempest Wireless Intercom Overview

2. The Most Evolved
Wireless Intercom Available
• Unprecedented features
• Unprecedented ease-of-use
• Unprecedented performance
• Unprecedented scalability
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© 2013 CoachCmm LLC.

3. The Most Frequency Friendly
Wireless Intercom Available
• Available as a 2.4GHz or 900MHz system
• 2.4GHz legal for use worldwide
• 900MHz legal for use in North America only
• Identical operation and features in both systems
• No frequency coordination required for either system
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© 2013 CoachCmm LLC.

4. Understanding Tempest 2.4GHz
Wireless Intercom
• Tempest 2.4GHz is available as a 2-channel or 4-
channel wireless intercom system
• Tempest broadcasts Digital Data Packets in the
unlicensed worldwide 2.4GHz range
• Tempest 2.4GHz is not a Wi-Fi system
• Tempest 2.4GHz can co-exist with Wi-Fi, and
other systems broadcasting in the same frequency
band
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© 2013 CoachCmm LLC.

5. Wi-Fi Systems and Tempest
How Wi-Fi Operates:
Wi-Fi uses 3 non-overlapping channels: 1, 6 and 11
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© 2013 CoachCmm LLC.

6. Wi-Fi Systems & Tempest - continued
• The RF for Wi-Fi is broadcast over a signal that is
22MHz wide
• Tempest data is broadcast over a signal that is 1.5MHz
wide, giving the Tempest signal a higher effective power
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© 2013 CoachCmm LLC.

7. Wi-Fi Systems & Tempest - continued
• Tempest uses a system called FHSS (Frequency
Hopping Spread Spectrum) to change the
transmission frequency every 5ms
• FHSS makes Tempest almost invisible to Wi-Fi as we
constantly change frequencies
• This also makes Wi-Fi almost invisible to Tempest as
our signal appears much stronger, and the Wi-Fi
signal’s power is closer to our noise floor
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© 2013 CoachCmm LLC.

8. Wi-Fi Systems & Tempest - continued
• Tempest is an all digital system that transmits Data
Packets containing the audio and other metadata
information for all BeltStations and the BaseStation
• Using a system called TDMA (Time Domain Multiple
Access) each BeltStation and the BaseStation get
their required data
• The entire system is on the same frequency at the
same time
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© 2013 CoachCmm LLC.

9. Wi-Fi Systems & Tempest - continued
• Tempest then changes frequency and broadcasts the
same data a second time for full Data Redundancy,
not traditional diversity
• Dual antenna Tempest systems also change antenna
every transmission
• Then we change frequency again and send the next
data packet, and the process repeats
• This all happens 200 times per second
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© 2013 CoachCmm LLC.

10. Illustrating how this works:
• We have two data packets “A” and “B”
*not a real data example
• Packet “A” contains the sound “Hello”
• Packet “B” contains the sound “Good Bye”
• How the redundant transmission works:
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© 2013 CoachCmm LLC.

11. BeltStations and BaseStation
* Dual Antennas On 4-CH Base Only
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© 2013 CoachCmm LLC.

12. Packet-1
“HELLO” from Antenna A
* Dual Antennas On 4-CH Base Only
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© 2013 CoachCmm LLC.

13. Packet-1 re-transmits 5 ms later
“HELLO” from Antenna B
* Dual Antennas On 4-CH Base Only
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© 2013 CoachCmm LLC.

14. Audio Packet-2
* Dual Antennas On 4-CH Base Only
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© 2013 CoachCmm LLC.

15. Packet-2 re-transmits 5 ms later
“Good Bye” from Antenna A
* Dual Antennas On 4-CH Base Only
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© 2013 CoachCmm LLC.

16. Packet-2 re-transmits 5 ms later
“Good Bye” from Antenna B
* Dual Antennas On 4-CH Base Only
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© 2013 CoachCmm LLC.

17. The Tempest radio has
only 3 user settings
• The Radio Band
• Hopping Pattern (Network Number)
• Lockout Key (Security Key)
– These are all set in the BaseStation
– They can be changed at any time
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© 2013 CoachCmm LLC.

18. The Radio Bands
• There are seven frequency ranges that cover approved
2.4GHz bands worldwide
• They can also be used to avoid a specific Wi-Fi channel if
desired
Radio Max # of MHz Avoid
Band Channels Bases Start End Wide 802.11b/g
1 43 11 2400 2480 80 None
2 27 8 2400 2450 50 11
3 27 8 2423 2473 50 1
4 27 8 2431 2480 49 1,2
5 15 6 2400 2428 28 7,8,9,10,11
6 15 6 2423 2450 27 1,11
7 15 6 2453 2480 27 1,2,3,4,5,6,7
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© 2013 CoachCmm LLC.

19. The Hopping Pattern: also known as the network number
• 43 available Hopping Patterns (0-42)
• All patterns use the same 43 frequencies, but at different times
• To maintain maximum performance when using multiple bases:
– Simply set each base to a different network number
– Connect 9-pin Accu-Sync ports from BaseStation to
BaseStation
– Connect Z-Sync Dongle or PSG
• Tempest automatically handles the rest
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© 2013 CoachCmm LLC.

20. Tempest 900MHz Differences
Similar RF Operation to 2.4GHz
• Tempest FHSS Technology
• Tempest TDMA Technology
• Single antenna operation
• No dual-transmission of data
• 37 available Hopping Patterns (0-36)
• All hopping patterns use the same 37
frequencies, but at different times
• No radio band adjustments available
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© 2013 CoachCmm LLC.

21. Tempest 2.4GHz vs. 900MHz
*Outside of North America use 2.4GHz only
• Propagation of 2.4GHz vs. 900MHz is very different
• 2.4GHz can have greater density of users
• 900MHz may penetrate certain surfaces better
• 2.4GHz can adjust for frequency spectrum
• 900MHz can have longer extended antenna cable length
• Both systems have specific RF attributes. It all depends on
the application and environment
• Remember, when possible, it’s always best to test any RF
system for performance on-site
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© 2013 CoachCmm LLC.

22. All Tempest Systems
Lockout Key - Also called the Security Key
• 256 available Lockout Keys (0-255)
• Select any number
• This tells the BeltStation it has permission to
communicate
• Should a BeltStation ever get lost, simply change
the Lockout Key # and re-pair the BeltStations. The
missing unit will no longer communicate with the
system.
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© 2013 CoachCmm LLC.

23. All Tempest Systems
Communication between the BaseStation
and the BeltStations:
• After setting the BaseStation parameters simply
“Pair” the BeltStation
• Connect the 3.5mm cable between the
BaseStation and the BeltStation
• Turn on the BeltStation and in 2 seconds
“Pairing Complete” appears on the display
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© 2013 CoachCmm LLC.

24. All Tempest Systems
Communication between the BaseStation
and the BeltStations:
• Tempest BeltStations can “Pair” with up to 64
BaseStations
• No more unusable inventory issues due to
frequency compatibility, simply pair all
BeltStations to all BaseStations and start
using all your entire inventory
• The Tempest patented radio system makes
RF easier than ever before
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© 2013 CoachCmm LLC.

25. Because Tempest BaseStations only use one
frequency at a time for all users, we can have:
• Up to ELEVEN 2.4GHz and FIVE 900MHz systems
working in one location with no RF conflicts
• Three software configured modes of operation
allowing from 80 BeltStations - to hundreds of
users with no RF issues, in a single area
• Both 2-channel and 4-channel systems work
together to suit your application needs
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© 2013 CoachCmm LLC.

26. Tempest’s Standard Features include:
• Remote feature control and status
monitoring from BaseStations or T-Desk
software (Normal mode only)
• Stage announce
• GPO relays
• Wired-Call functionality
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© 2013 CoachCmm LLC.

27. Tempest’s Advanced Features Include:
• Wireless ISO (Wireless ISO-late)
• Aux-in with individual User level control
• Remote microphone kill
• TDesk PC system management software
• Fast, easy and simple firmware upgrades
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© 2013 CoachCmm LLC.

28. Unique Tempest Features
Exclusive Tempest Multi-Mode Operation
• Normal Mode
• Shared Mode
• Split Mode
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© 2013 CoachCmm LLC.

29. Normal Mode
• Five “Normal Mode” users
• 2 or 4 intercom channels
• All Belts are dual listen/talk
• A or B + C or D
• Any Belt may talk at any
time
• All Belts may talk at once
• Talk buttons may be
momentary or latching
• Full belt telemetry at
BaseStation and TDesk
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© 2013 CoachCmm LLC.

30. Split Mode
• Four “Normal-Mode” users
• 2 or 4 intercom channels
• A or B + C or D
• “5th user slot” unlimited single-
channel shared users
• Choice of one A, B, C or D
• Shared channel is selected at
BaseStation
• Momentary talk buttons only
• Call, SA, ISO, relays are
available - they share the same
talk path
• Common Channel BeltStation
settings cannot be remotely
adjusted or monitored
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© 2013 CoachCmm LLC.

31. Shared Mode
• Unlimited users
• Belts are dual listen/talk
channel A or B + C or D
• BeltStations control channels
• Only 5 total “talk paths”
• Momentary talk buttons only
• Call, SA, ISO, relays
available but they use a talk
path (5)
• Shared BeltStation
settings cannot be
remotely adjusted or
monitored
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© 2013 CoachCmm LLC.

32. High-Intelligibility and
Wide Dynamic Range
• Tempest has over 90db of Dynamic Range - far more than any
other wireless intercom system
• Dynamic Range defines the softest vs. loudest sound you can hear
• This allows Tempest to perform very well in extreme noise
environments
• Others listeners can hear you easily over the background noise
• You can hear others speaking without ear-damaging volume levels
• This is accomplished without noise-cancelling mics or headsets
• Everyone’s communications are heard clearly
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© 2013 CoachCmm LLC.

33. Antenna Systems and Applications
• Tempest is a single point of transmission system
• Antennas are mounted on the back of the
BaseStation
• Optional Remote Transceiver
– Up to 1500’ (450m) on standard CAT-5 cable
• Either one can be used, but not both at the same
time
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© 2013 CoachCmm LLC.

34. Remote Transceiver Options
• Remote Transceiver: Allows the base
antennas to be located up to 1500 feet (450 meters) from
the BaseStation without any loss of RF signal
• Remote Transceiver Line Extender:
Increases maximum allowable distance between a
BaseStation and Remote Transceiver
• Dedicated RT: Variation of the Remote
Transceiver with a dedicated RF transmit connection and
a dedicated RF receive connection. (Designed for
systems integrators)
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© 2013 CoachCmm LLC.

35. 2-Channel
Front Panel layout
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© 2013 CoachCmm LLC.

36. 4-Channel
Front Panel layout
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© 2013 CoachCmm LLC.

37. 2-Channel
Rear Panel layout
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© 2013 CoachCmm LLC.

38. 4-Channel
Rear Panel layout
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© 2013 CoachCmm LLC.

39. Tempest 2.4GHz MasterBelt
• Simple and easy-to-use LCD
Interface
• 2-Channel Dual-Talk, Dual-Listen
Operation
• Up to 8 hours of Battery Time
• Perfect for mobile productions
– Remote Film Production
– Show Set-up Crews and Rigging
– Small Events and Shows
– Rentals
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© 2013 CoachCmm LLC.

40. Tempest MasterBelt - continued
• Use in place of a Tempest
BaseStation
• Compatible with all Tempest 2.4GHz
BeltStations
• Pair up to five BeltStations in Normal
Mode
 Up to 6 users in Normal Mode
• Can be worn and used like a
BeltStation
• Split Mode and Shared Mode
Options
• Does not function as a Tempest
BeltStation
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© 2013 CoachCmm LLC.

41. For More Information Visit
www.tempestwireless.com
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© 2013 CoachCmm LLC.