Aquacom STX-101SBR Rack Mount Surface Unit for BELL-200 (25kHz Only)

Description
The STX-101SBR is a high-power (70 W), dual-channel military surface station designed for long-range underwater communication (200–6000 m). Available in both low- and high-frequency versions (8.0875/11 kHz or 25/32.768 kHz), it features a 19″ rack-mountable design, supports 24 VDC power input, and includes a rugged dynamic microphone with a heavy-duty front panel speaker. Ideal for fixed installations, it does not operate on batteries and is built for reliable performance in demanding field conditions.
STX-101SBR vs. STX-101SB – Feature Comparison
Nominal Range
Both Models: 200 m – 6000 m*
Channels
STX-101SBR: 2 channels
STX-101SB: 1 channel
Frequencies
STX-101SBR:
Low-Frequency Version:
Channel A: 8.0875 kHz USB
Channel B: 11 kHz LSB
High-Frequency Version:
Channel A: 25 kHz USB
Channel B: 32.768 kHz USB
STX-101SB:
8.0875 kHz USB or 25 kHz USB
Output Power
Both Models: 70 W
External Power Source
STX-101SBR: 24 VDC @ minimum 10 amps
STX-101SB: 12 VDC @ minimum 4 amps
Microphone / Speaker
STX-101SBR:
Handheld dynamic microphone (100–1000 ohm)
Heavy-duty front panel speaker with on/off control
STX-101SB:
Handheld dynamic microphone (200 ohm)
Heavy-duty front panel speaker with on/off control
Battery Type
STX-101SBR: Not applicable
STX-101SB:
Supplied with (2) RB-6V rechargeable batteries
Note: Do not use alkaline batteries
Battery Life
STX-101SBR: Not applicable
STX-101SB: Approximately 6 hours (10% duty cycle)
Dimensions (W x H x D)
STX-101SBR:
Height: 3.50″
Width: 18.4″ (mounting hole centers)
Case Width: 17″
Depth: 8.00″ (with mounting brackets)
STX-101SB:
14″ x 6.5″ x 10.60″
Weight
STX-101SBR: Not specified
STX-101SB: 12 lb