Features of the Guardian FFM include:
- Removable 2nd stage for easy cleaning and storage (can't be used w/o mask)
- Made of a one-piece, non-rigid silicone skirt combined with injection-molded, high-impact, glass-filled ABS plastic frame and regulator housing
- A double face seal and slightly smaller oral nasal cavity to fit most faces
- Equalization occurs through a nose block.
- Air flow is directed up over the visor to eliminate fogging and through one-way valves in the oral nasal pocket to reduce CO2 retention.
- 2nd stage comes off the right shoulder and uses a standard LP hose
- Includes a communications port for easy installation of a Buddy Phone® or ear/microphone assembly to connect an OTS Diver Communications Unit such as the Aquacom® SSB-2010
- Includes OTS' Ambient Breathing Valve®, Mask Bag, and LP hose
The 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® D2differs from our 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.
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 detailed explanation -- note: continuous transmit mode allows the user to talk, hands free. This was requested by many movie makers and scientists who talk on camera often).
In all, this D2 Buddy Phone is State-of-the-Art and OTS technology at its best.
| Nominal Range | 50 to 500 meters depending on sea conditions & noise levels. |
|---|---|
| Transmission Type | Ultrasound using upper single sideband (USB) |
| Transmit Output Power | 0.5 watts PEP |
| Standard Frequency (PEP) | Recall & tone: Freq. A (Channel 1): 32.768 kHz USB Freq. B (Channel 4): 31.250 kHz |
| Audio Bandwidth | 300 to 3,000 Hz |
| Automatic Gain Control | Greater than 80 dB |
| Earphone | Ceramic |
| Microphone | ME-16R Hot-Mic (Dynamic) or Super Mic (Standard)(Ceramic) |
| Transducer | Ceramic cylinder |
| Battery Type: | Alkaline 9V. Batteries not included. |
| Maximum Operating Depth | 130 feet in sea water (fsw) |
| Weight in Air | 8.1 oz |
