OTS Underwater Communications Equipment | Scuba Center has been selling quality recreational, commercial, and public safety diving equipment since 1973. You will find a wide selection of equipment at our Eagan, Minnesota location.

Scuba Center Public Safety Diving and Water Rescue Equipment | Scuba Center in Eagan, Minnesota is your leading source for water rescue equipment in the Midwest. Contact us for questions or details.

Authorized OTS Gold Dealer = Public Safety/Government/Commercial/Recreational
Scuba Center is a SAM ( formerly CCR ) registered supplier for the United States Government. Our customers include: U.S. Coast Guard, U.S. Navy, U.S. Federal Government Agencies, Law Enforcement Agencies, Search and Rescue (SAR) Teams, Fire Departments, State and Local Government agencies, Commercial Diving Companies, School Districts, Television and Movie production companies, and many others.
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OTS Underwater Communications

Sport - Military - Commercial - Search & Rescue
OTS | Ocean Technology Systems is the Leader in State-of-the-Art Underwater Communication Systems servicing the Sport, Commercial, Movie Industry, Search & Rescue and Military communities around the world! Looking for the finest underwater communications systems available? You have come to the right place. OTS offers hard-wire, through-water, sonic, wireless, diver recall systems, Buddy Phone, Aquacom, Hot Mic, and Buddy Line products. They also offer support items such as earphones, microphones, full face masks, and ComRope. | OTS Underwater Communications Equipment at Scuba Center in Eagan, Minnesota Ocean Technology Systems is the Leader in State-of-the-Art Underwater Communication Systems servicing the Sport, Commercial, Movie Industry, Search & Rescue and Military communities around the world! Looking for the finest underwater communications systems available? You have come to the right place. OTS offers hard-wire, through-water, sonic, wireless, diver recall systems, Buddy Phone, Aquacom, Hot Mic, and Buddy Line products. They also offer support items such as earphones, microphones, full face masks, and ComRope.

Scuba Center is an authorized OTS Dealer.
This is your assurance that your equipment will come with the full manufacturer's warranty.
Authorized Online Dealer

*As many OTS communications items are assembled and tested to order, please allow for additional lead time.*
 

OTS Underwater Communication Systems Traiining Videos. Applications include Sport diving, Commercial diving, Movie and Television production, Search & Rescue and Military diving communities around the world! | OTS Underwater Communications Equipment How To Videos OTS Communications Training Videos

 Ocean Technology Systems is the Leader in State-of-the-Art Underwater Communication Systems servicing the Sport, Commercial, Movie Industry, Search & Rescue and Military communities around the world! | OTS Underwater Communications Equipment OTS Operators Manuals

OTS Buddy Phone D2 Through-Water Transceivers
OTS Buddy Phone underwater communications for AGA full face masks -- Shown with MKII-G (Gold Silicone) -- MKII-BUD uses ultrasonic upper single sideband for transmission. The The MKII-BUD Buddy Phone comes complete with a AGA cover plate with Push-to-talk button, a patented OTS HotMic (studio-quality, water proof microphone), and the main transceiver. The OTS MKII-BUD easily installs to virtually all AGA ffm in minutes. | OTS Underwater Communications EquipmentThe OTS Buddy Phone ® D2 is a digital, micro-miniature, ultrasonic transceiver allowing communication between two or more scuba divers or surface stations. Using "Digital Signal Processing" (DSP) techniques, the Buddy Phone produces uncompromising speech clarity. The Buddy Phone® D2 differs from the older "standard" Buddy Phone in that it is digitally controlled and has some fantastic new features such as: a voice menu to guide you adjust your Volume, change from channel A to Channel B or put the Buddy Phone in a continuous voice transmission mode.
 Nominal Range: 50 to 500 meters depending on sea conditions & noise levels.
Battery Type: (1) 9-volt Alkaline Battery or Ultralife® lithium 9-volt cell
Voice Menu: When you submerge with a D2 Buddy Phone, you will hear the voice system say "Buddy Phone ON, frequency A (B), channel one (four), volume High (Medium, Low)," depending on the prior dive's settings. Changing a setting is easy and can be done while underwater. Depress the Push-to-talk switch (PTT) three times quickly and hold the third depression until you hear "main menu - volume, channel, continuous transmit." When you hear the main menu selections, simply depress the PTT to select one of the choices. The unit will make the selection and go back to the receive mode. If you don't make a selection after the menu repeats twice, the D2 Buddy Phone goes out of the main selection menu and back to the receive mode (see operators manual for a more detail explanation) (note: continuous transmit mode allows the user to talk, hands free. This was requested by many movie makers and scientist who talk on camera often).

Freq. A (Channel 1): 32.768 kHz USB, Freq. B (Channel 4): 31.250 kHz LSB

Price: $999.00-1199.00

2 Channels w/ Squelch, PTT Control, Adj. Volume
(Sold Separately, Does Not Include FFM)

OTS Buddy Phone RX-100 receive only units
OTS RX100 Buddy Phone | The RX-100 Buddy Phone ® Receive Only unit is designed as an acoustic underwater listening device to be used with all OTS Buddy Phone ® or Aquacom ® transceivers within range and on the same frequency. The diver simply attaches the OTS RX-100 to his own face mask and is ready to go. When the diver enters the water, the OTS RX-100 powers up and cycles to the receive mode - ready to receive a message. | OTS Underwater Communications EquipmentOTS RX-100 Buddy Phone ®
Receive Only unit designed as an acoustic underwater listening device to be used with all Buddy Phone ® or Aquacom ® transceivers within range and on the same frequency. The diver simply attaches the RX-100 to his own face mask (mask not included) and is ready to go.  When the diver enters the water, the RX-100 powers up and cycles to the receive mode - ready to receive a message.

Battery Type: (1) 9-volt Alkaline Battery or Ultralife® lithium 9-volt cell

OTS Buddy Phone RX-100 D2 A (Channel A = 33K Upper)
OTS Buddy Phone RX-100 D2 B (Channel B = 31.25K Lower)

Price: $649.00
 
The all new OTS PowerCom 3000D delivers 25 watts of power and was designed with professional Search & Rescue teams! With new features like an included lithium-ion battery and charger, scrambler mode, extra loud volume, and improved cable strain reliefs, to name a few, the PowerCom 3000D builds upon our legendary communications. | Prepare your team with OTS Underwater Communications Equipment from Scuba Center in Eagan, MinnesotaPowerCom 3000D (single sideband transceiver)
 The POWERCOM 3000D Wireless Diver Communication Unit takes Wireless Communication performance to the next level for all your professional diving needs. It’s specifically designed rechargeable Lithium-ion battery boasts more power for improved range, up to 14 hour battery charge and significantly improved overall battery lifespan ensuring that the PowerCom 3000D will keep you connected when you need it. Looking for added communication security? Look no further. With the POWERCOM 3000D’s all-new Scrambler Mode, Wireless Communications can now be discreetly and more securely transmitted for the first time in wireless communication history. Tack on additional features such as “Extra Loud” Voice Menu Volume Control, improved mounting and strain reliefs, and more replaceable components for serviceability, the POWERCOM 3000D is truly the next generation of Wireless Diver Communications.
Nominal Range: Calm Sea: up to 3000m. Sea State 6: up to 200m.
Standard features: Voice Operated Transmitter (VOX), Push-to-talk control (PTT), Squelch, 4 channels, Earphone volumes, Voice menu.
Battery Type: Lithium-Ion Rechargeable Battery

POWERCOM 3000D Channels (Single Sideband)

  
1=32.768 kHz upper 2=32.768 kHz lower 3=31.250 kHz upper 4=31.250 kHz lower

Price: $1999.00   add OTS PowerCom 3000D to cart

OTS EMA-2 | This earphone/mic. assembly is design for all Interspiro AGA Divator ffm. It is configured with an OTS HiUse connector, push-to-talk (PTT) button, Hot-Mic ®, dual earphones (150 ohms), earphone holders and the Interspiro cover plate. The PTT button is not used in Hard-wire underwater communication applications. | OTS Underwater Communications EquipmentEarphone/Microphone Assemblies
OTS E/M Assemblies are designed to allow the user to connect either Hard-wire or Through-water communications to a helmet or full face mask (ffm). All standard E/M Assemblies include a Hi-Use connector, Push-to-Talk (PTT) button (used only for through-water communications), dual 150-ohm earphones, and earphone covers. Due to the many styles of ffm on the market... configurations can be endless depending on the application. In addition to supporting different installation methods for each FFM, E/M Assemblies can be configured with either one of these two microphones elements:

  • ME-150 Microphone is the newest version of the Hot Mic. Noise canceling, salt-water resistant, pressure-resistant studio quality microphone (most common).

  • Super Mic is a water proof, pressure tolerant ceramic microphone with a compact, lightweight design and noise cancelling properties reducing background noises for clearer communications

The following configurations are the most commonly used:

  
EM-OTS2: (Standard for OTS FFMs) ME-150 Studio Quality Noise Cancelling Microphone, OTS-4P Hiuse Connector
EM-OTS2-AQUA: AQUA (Mainly used by Aquariums) No PTT Button (Hardwire Only), Improved Strain Relief, OTS-4P Hiuse Connector
EMA-2: (Standard for Interspiro AGA) ME-150 Studio Quality Noise Cancelling Microphone, OTS-4P Hiuse Connector

 

 Price: $679.00 - 999.00
 
OTS Surface Communications Stations
OTS CDK-6 Surface Conversion Kit for SSB-2010 / PowerCom 3000D | Surface Conversion Kit. Converts a 2010, 2001B-2, or 1001B into a portable surface station. | Once installation has been completed, you may control the dive unit via the PTT control and may modify your settings for VOX/PTT mode, squelch, earphone volume, and channel. | OTS Underwater Communications Equipment  CDK-6 Surface Conversion Kit*
The OTS CDK-6 Surface Accessory Kit is designed to convert a PowerCom 3000D, PowerCom 5000D, MilCom 6000D, SSB-2010, SSB-2001B-2, or SSB-1001B into a portable surface station. After a quick and easy installation, you can talk to other divers and/or surface stations within range and on the same channel.

The Kit consists of a deluxe headset with boom microphone (THB-13) with a built in Push-to-talk (PTT) control, and a 55′ transducer cable (TC-35S) including connectors. Once installation has been completed, you may control the dive unit via the PTT control and may modify your settings for VOX/PTT mode, squelch, earphone volume, and channel.

The CDK-6 is perfect for fast response and when space is an issue. Many Team Leaders utilize the CDK-6 in small craft.
* Does not include PowerCom 3000D, PowerCom 5000D, MilCom 6000D, SSB-2010, 2001B-2 or 1001B.		 Price: $899.00   add OTS CDK-6 Surface Conversion Kit for SSB-2010 \ PowerCom 3000D to cart
     

OTS SP-100D2 Buddy Phone surface comm unit | The OTS SP-100D Surface Buddy Phone ® is newly designed. State-of-the-art Digital Signal Processing circuitry (DSP - known as "Software Defined Radio") has been incorporated ensuring great performance and clarity. The new DSP Squelch circuitry is second to none. The OTS SP-100D will operate with all Single Sideband acoustic underwater devices within range and on the same frequency. The user simply places the OTS SP-100D Buddy Phone ® in a secure area, lowers the 35' transducer cable in the water, turns the power On and talks via a hand held microphone. All divers and/or other surface stations within range and the same frequency will receive the message. When any other persons within range and on the same frequency talks, the voice will be heard from the front panel speaker of the OTS SP-100D. | OTS Underwater Communications Equipment

 OTS SP-100D2 Buddy Phone (2 Channels)
 The SP-100D Surface Buddy Phone ® transceiver was designed to operate with all single sideband acoustic underwater devices within range and on the same frequency. State-of-the-art Digital Signal Processing circuitry (DSP - known as "Software Defined Radio") has been incorporated ensuring great performance and clarity. The new DSP Squelch circuitry is second to none. Includes 35' transducer cable and a hand held microphone.
 Battery Type: 8 AA alklaline; or 16 AA alkaline; or optional RB-11 NiMH 12-volt Battery Pack
Dimensions (W x H x D): 9.0" x 7.85" x 3.70"
Weight: 2.5 lbs

Freq. A (Channel 1): 32.768 kHz USB
Freq. B (Channel 4): 31.250 kHz LSB
Price: $1799.00   add OTS SP-100D2 Buddy Phone Surface Communications Station to cart
     

OTS PowerCom 3000S 

 PowerCom 3000S, 4 Channel (25 Watts Output Power) (includes hand held mic.)
The all new POWERCOM Surface Station line takes wireless communication performance to the next level for all your professional diving needs. With the POWERCOM’s all-new Scrambler Mode, wireless communications can now be discreetly and more securely transmitted for the first time in wireless communication history. Surface Stations are housed in a completely new smaller, lighter and more rugged case with removable lid. The POWERCOM 3000S offer many new features such as a transducer cage to help protect from bumps and drops, a new IP66 water rated hand held microphone and an included custom backpack to haul all of your team’s communication gear in one convenient location. The POWERCOM Surface Stations are truly the next generation of subsurface Wireless Communications.		 Price: $3699.00   add OTS PowerCom 3000S, 4 Channel (25 Watts Output Power) Surface Communications Station to cart
 

  • Increased Power & Range (25 watts & up to 3000 meter range)

  • Included Rechargeable Lithium-Ion Battery & Charger

  • Greatly Improved Battery Life

  • New Smaller, Lighter and Tougher Housing

  • New Multi-Color LED Battery Indicator

  • New Transducer Cage

  • New Push On/Off Squelch Button

  • IP66 Water Rated Handheld Microphone

  • Removable Lid with Removable Whiteboard

  • Included Custom OTS Backpack to Store Complete Unit and up to 4 Diver Units

  

OTS Hard Wire Surface Communications Stations

OTS Aquacom Combox hard wire surface communications box | The Aquacom ComBox is a compact, self-contained one diver air intercom. It allows clear communications using a powerful 20-watt amplifier and a powerful front panel speaker, "Silver Bullet". OTS ComBox is rugged and offers many features others dream about. The Push-to-Talk (PTT) control is an industrial vending machine switch. It is designed to be pushed all day long. The front panel speaker is small but packs a lot of sound. In all, the OTS ComBox is the finest one diver box on the market. | OTS Underwater Communications Equipment | Shop online and at Scuba Center in Eagan, Minnesota  

 OTS Aquacom ComBox (1 diver / 2 wire)
The Aquacom ® ComBox is a compact, self-contained one diver air intercom. It allows clear communications using a powerful 20-watt amplifier and a front panel speaker.
 Battery Type: (16) AA Alkaline batteries or 12-volt front panel option.
Dimensions (W x H x D): 9"x7.85"x 3.4"
Weight: 5 lbs.		 Price: $1099.00   add OTS Aquacom ComBox Surface Communications Station to cart
     

OTS MK7 BuddyLine hard wire communication | The MK7 BuddyLine is a compact, self-contained one- or two-diver air intercom. It will allow clear communications in the 4-wire mode (round robin). The OTS MK7 BuddyLine was specifically designed for Search & Rescue Teams to have an underwater communication device that had little set-up time. | OTS Underwater Communications Equipment 

 OTS MK7 BuddyLine (w/THB-7A headset/boom mic.)
Compact, self-contained one- or two-diver air intercom. Allows clear communications in 4-wire mode (round robin). The MK7 BuddyLine was specifically designed for Search & Rescue Teams to have an underwater communication device that had little set-up time.
(Mannequin not included)
 Battery Type: 8-AA Alkaline batt. or optional RB-11
Dimensions (W x H x D): 4 ¼ x 6 ¾"x 2 ¾"
Weight: 1 lbs.		 Price: $1799.00   add OTS MK7 BuddyLine Surface Communications Station to cart
OTS Adaptor, Y-Splitter for MK-7 (Allows 2 Comropes to plug into 1 Diver Port) YAD-S Y-Splitter for MK-7 (Allows 2 Divers to plug into 1 port) Price: $399.00   add OTS THB-2A Headset for MK2-DCI to cart
     

OTS Aquacom Mk2-DCI | 2 diver / 2 or 4 wire communications -- The Aquacom MK2-DCI is a compact, self-contained two- or one-diver air intercom. It will allow one or two divers clear underwater communications either in the 2- or 4-wire mode. However, up to 6 divers can be stacked and all be on line together (4-wire mode). | OTS Underwater Communications Equipment | Available at Scuba Center in Eagan, Minnesota  

 OTS MK2-DCI (2 diver / 2 or 4 wire)
The Aquacom ® MK2-DCI is a compact, self-contained two- or one-diver air intercom.  One or two divers in either 2- or 4-wire mode. However, up to 6 divers can be stacked and all be on line together (4-wire mode).
 Battery Type: (2) 6 volt lantern batteries (heavy duty) or Optional RB-6 rechargeable batteries.
Dimensions (W x H x D): 14" x 10.60"x 6.85"
Weight: 12½ lbs.		 Price: $2499.00   add OTS MK2-DCI Surface Communications Station to cart
THB-2A Headset for MK2-DCI (optional headset, deluxe, with boom mic. Price: $589.00   add OTS THB-2A Headset for MK2-DCI to cart

OTS Communications Equipment Accessories
RB-11 NiMH 12-volt Battery Pack

Price: $159.00   add OTS NiMH battery pack (12 volts). Used w/SSB-2010, 2001B-2, 1001B, ComBox & MK-7 to cart
RCS-15US Battery Charger

Price: $209.00   add OTS RCS-15US Battery Charger for ComBox (Replaces RC-15) to cart
RB-6V Rechargable Battery Pack

Price: $54.00   add OTS RB-6V Rechargeable Battery (MK2-DCI, STX-101/M) (two required) to cart
RCS-13US/EU/UK/AU Smart Charger

Price: $209.00   add OTS RCS-13US Battery Charger for MK2-DCI, STX-101/M to cart
   
OTS Communications Gear Bag | Ocean Technology Systems | User configurable compartments capable of storing three OTS diver communications units; a FFM and diver communication unit; or a headset, portable surface unit with room to spare.OTS Communications Gear Bag
 The OTS designed gear bag prolongs the life of your FFM, OTS communications gear, or other sensitive equipment by combining a rugged nylon outside shell with a closed cell padded inside. It features user configurable compartments capable of storing three diver units; a FFM and diver unit; or a headset, portable surface unit with room to spare.

CR-4 ComRope 4 Wire Communications Rope | OTS CR-4 ComRope ® is 100% Polyester, 7/16″ static kernmantle rope designed with four specially configured wires down the center. | Shop online or at Scuba Center in Eagan, Minnesota OTS Hard Wire Communications Ropes
CR-4 ComRope is 100% Nylon, 7/16" static kernmantle rope designed with four specially configured wires down the center. CR-4 is sold by the foot with the connectors that suit your needs on either end.

Select the color, the connector configurations, and the length.

Price: $52.00   add OTS Communications Gear Bag # 134153-000 to cart

Order OTS ComRope
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While these are excellent reference materials, in no way should this information be considered a replacement for proper training for the specific type of diving in which you plan to participate.