SEA 235 150W HF/SSB Digital Radiotelephone Owner’s Manual

SEA 235 150W HF/SSB Digital Radiotelephone

Instructions

• The SEA 235 is one of the first MF/HF SSB radiotelephones with Digital Signal Processing (DSP) as its fundamental architecture.
  • DSP end-user benefits include:
  • More talk power than radiotelephones with equal power ratings
  • Virtually error free transition for voice and data
  • Clear audio with enhanced clarity and reception
  • Receives future enhancements and improvements through software upgrades
  • Flexible application filters configured through software
  • Increased reliability over analog filters
  •  Email and Data capability
  • Amateur bands with HAM/MARS operations
  • Frequently used channels are pre-programmed from factory using alpha-numeric names for easy recall
  • True AM receiver for clear undistorted reception
  • Large easy to read LCD & backlit silicone keypad
  • Optional 2350 Remote Control Heads (up to 3)
  • Interfaces with SEA 1612C automatic antenna tuner
  • Interfaces to PACTOR II and ALE Controllers
• The SEA 235 is an MF/HF SSB radiotelephone designed and built on a fully digital platform. This revolutionary radio is unequaled in performance, price, reliability, and flexibility for use in numerous special applications.
• Digital architecture makes the SEA 235 more reliable. It is also smaller and lighter than most MF/HF Single Side Band radios in the Marine marketplace.
• The SEA 235 design has proven to be extremely reliable and capable of sustaining high performance communications in harsh environments and under extreme signal conditions.
• Flexible SEABUSS interconnection supports multiple devices, balanced/unbalanced audio lines, and simplifies PACTOR and ALE controller interfaces.
• SEA has consistently provided competitively priced HF/MF SSB radiotelephones for more than 30 years.
• SEA MF/HF SSB radiotelephones have won numerous awards for excellence.
• SEA COM CORP has a worldwide service network to support all of its products, ensuring backup support almost anywhere in the world your ship is operating.
• To learn more about this model or other SEA products, contact your local Marine Electronics Dealer or call SEA COM CORP at 425-771-2182, or email sales@seacomcorp.com.

Specifications

• GENERAL

  • Compliance: FCC Parts 80, 87, 90

  • FCC ID: BZ6SEA235

  • Frequency Range:

  • Tx: 1.6 to 30 MHz

  • Rx: .49 to 30 MHz

  • Frequency Resolution:

  • Tx: 100 Hz

  • Rx: 10 Hz

  • Frequency Stability: 10 Hz (-30 +60C)

  • Operating Modes: J3E (USB) LSB, H3E, J2B (AFSK) R3E

  • Supply Voltages: 13.6 VDC 15% (11.6 – 15.6 V)

  • Current Drain:

  • Tx 17 Amps (two-tone)

  • Tx 11 Amps (voice)

  • Rx 1 Amp (stand-by)

  • Rx 1.5 Amps (full-audio)

  • Operating Temperature

  • Range: -30C to 60C

  • Antenna Impedance: 50 ohms

  • Channels:

  • 1176 Total

  • 200 Programmable

  • 242 ITU SSB Duplex

  • 72 ITU SSB Simplex

  • 662 ITU FSK Duplex

  • Direct Entry

  • Scan Channels: 200

  • Display:
    LCD
    3.2” x 1.85” (W x H) (81.2mm x 46.9mm)

  • Metering : S-Meter

  • Computer I/O: RS-232 Serial

• RECEIVER

  • Frequency Range: 490 KHz to 30 MHz
  • Frequency Resolution: 10 Hz
  • Intermediate Frequencies: 45 MHz, 455 KHz
  • Sensitivity:   1.0 uV for 12 dB SINAD
  • Adjacent Channel Selectivity: >60db at –1 KHz
  • Blocking: At max. Sensitivity: Better than 70 dB at +60dB/uV: Better than 100 dB
  • Cross Modulation: Better than 80 dB
  • Spurious Response: Better than 70 dB
  • Spurious Emissions: Less than 1 nW
  • Intermodulation: -80 dB
  • AGC: J3E, fast attack, slow release, ≤ 10 dB audio level change from 10 uV to 100 mV input
  • Clarifier: +/-200 Hz in 10 Hz steps
  • Squelch: Voice controlled, opens at SINAD >5dB
  • Audio Output: 4 Watt @ 4 ohms, less than 10% distortion

• TRANSMITTER

  • Output Power: 150 Watt into 50 ohms
  • Power Reduction: -3dB/-6dB from PEP
  • Intermodulation: Better than -34 dB below PEP
  • Spurious Emissions: Better than -65 dB below PEP
  • Carrier Suppression: Better than 50 dB below PEP Undesired Sideband
  • Suppression : Better than 50 dB below PEP
  • AF Bandwidth: 400 – 2500 Hz at -6 dB

Dimensions

in. (mm)

ABOUT COMPANY

• SEA COM CORPORATION
• 7030 – 220th S.W., Mountlake Terrace, Washington 98043,
• 425.771.2182
• Fax: 425.771.2650
• www.seacomcorp.com

References

• SEA Marine Communications International - American Technology that talks to the World

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