The SP-100D2 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 the industry leader.
The SP-100D2 will operate with all single sideband acoustic underwater devices within range and on the same frequency. The user simply places the SP-100D2 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 SP-100D2.
The SP-100D2 Buddy Phone is compact and operates on (8) AA Alkaline batteries, ensuring hours of fun. For those who require extreme long life, two battery packs (16 AA) batteries can be utilized. You can monitor and talk to divers while the action is happening. A must for all dive boats and/or dive operations.

Options and Accessories: 

• THB-14 Deluxe Headset w/ Boom Mic
• TC-35S 55′ Transducer Extension Cable
• TC-100 100′ Transducer Extension Cable
• TA-32M Hull Mounted Transducer w/ Fairing (33 kHz)

Features	SP-100D2	STX-101	2010 & CDK-6
Nominal Range	50-500m*	200-3000m*	200-1000m*
Channels	1 & 4	1-4	1-4
Output Power (watts)	0.5	5	5
External Power Source	12 VDC @ min. 1 amp	12 VDC @ min. 5 amps	n/a
Microphone/Speakers	Hand held, PTT, dynamic, 500 ohm impedance	Hand held; dynamic, 200 ohm / heavy-duty front panel speaker with on/off control	THB-13 Deluxe Headset with boom Mic and PTT
Battery Type	8 AA alklaline; or 16 AA alkaline	(2) 6-volt lantern battery (heavy duty w/springs)	8-AA alkaline or RB-11 NiMH battery pack
Battery Life (10% duty cycle)	8 cells: 10 hrs; 16 cells: 20 hrs	20 hrs	Alkaline: 7 hrs NiMH: 12 hrs
Dimensions (W x H x D)	9″ x 7.85″ x 3.70″ 2.5 lbs	14″ x 6.5″ x 10.60″ 12 lbs	n/a 8 oz

Specification Comparison of Through-water Surface Units