AEA DSP-2232

The AEA DSP-2232 is a multi-mode data controller for amateur radio communications that combines dual simultaneous radio ports with software-defined DSP modems. It supports cross-mode gateway operations, satellite communications with automatic Doppler correction, and concurrent HF/VHF monitoring. New modes can be added through firmware updates, enabling long-term adaptability across evolving amateur radio standards.

– Technical Specifications

Processing Architecture
• DSP: Motorola 56001 at 24 MHz
• Main Processor: Hitachi HD64180 or Zilog Z180
• System ROM: 128 KB expandable to 384 KB
• System RAM: 64 KB with lithium battery backup

Modem Capabilities
The unit supports PACTOR, VHF/HF Packet (FSK/BPSK/DPSK), AMTOR/SITOR, RTTY, ASCII, CW, Baudot, NAVTEX, and TDM modes. Integrated satellite modems include automatic Doppler correction with up/down Doppler shift capability for PSK modems. An onboard 9600 bps high-speed packet modem provides K9NG and G3RUH compatibility. User-uploaded DSP modems support custom FSK tone pairs, QAM, or QPSK configurations.

DSP Architecture
Digital signal processing enables virtual filter implementation with superior sharpness and skirt characteristics compared to analog designs. Filters adapt dynamically to changing propagation conditions through software reconfiguration without hardware modification.

– Key Features

• Dual simultaneous radio ports for cross-mode gateway operations (Packet-to-AMTOR, Packet-to-PACTOR, Packet-to-Packet)
• True simultaneous HF and VHF band monitoring
• Dual VHF packet operation capability
• LCD display showing mode, diagnostics, connect status, call signs (packet), and received text (RTTY/AMTOR/PACTOR)
• Full LED status indicators with bar graph tuning indicators for each port
• MailDrop facility with 18 KB mailbox accessible from both ports
• Selective third-party traffic control with BBS compatibility

– Typical Applications

Satellite communications, amateur radio data networking, cross-mode gateway operations, and concurrent band monitoring for time-critical communications.

– Compatibility & Integration

The DSP-2232 inherits modem sets from legacy platforms including the PK-232MBX and PACSAT/OSCAR satellite modems, ensuring compatibility with established amateur radio infrastructure.