Home » MFJ RTTY/CW Computer Interface Model MFJ-1224 (Pre-Owned)
MFJ RTTY/CW Computer Interface Model MFJ-1224 (Pre-Owned)
MFJ RTTY/CW Computer Interface Model MFJ-1224 (Pre-Owned)
MFJ RTTY/CW Computer Interface Model MFJ-1224 (Pre-Owned)
MFJ RTTY/CW Computer Interface Model MFJ-1224 (Pre-Owned)

MFJ RTTY/CW Computer Interface Model MFJ-1224 (Pre-Owned)

In stock
UPC: modelmfj-1224
(0)
$39.95

MFJ RTTY/CW Computer Interface Model MFJ-1224 (Pre-Owned)

The MFJ-1224 RTTY/CW Computer Interface is a classic digital-mode interface designed for amateur radio operators who want to connect their transceiver to a computer for RTTY, ASCII, and CW communications. This versatile interface converts received CW or AFSK tones into computer-compatible TTL signals and also converts computer-generated signals into transmit audio or CW keying for on-air operation.

Popular among vintage digital-mode enthusiasts and experimenters, the MFJ-1224 supports a wide variety of older computer systems and ham radio software packages, making it an excellent accessory for retro amateur radio stations, collectors, or digital-mode hobbyists.

Features

  • Supports RTTY, ASCII, and CW digital modes
  • Interfaces radios with compatible computers and software
  • Converts CW/AFSK audio into TTL-level computer signals
  • Provides CW keying and AFSK transmit capability
  • Adjustable RTTY shift settings (170Hz / 425Hz / 850Hz)
  • Built-in tuning and phase-lock indicators
  • Direct and grid-block keying outputs
  • Compatible with many vintage ham radio software packages and computer systems

Typical Applications

  • Amateur radio digital-mode operation
  • RTTY and CW communications
  • Vintage computer and radio interfacing
  • HF and VHF digital experimentation
  • Retro ham radio station setups

Specifications

  • Modes Supported: RTTY / ASCII / CW
  • Input Voltage: 12 VDC
  • TTL-level computer interface outputs
  • Audio input/output connections for transceiver interfacing
  • Adjustable PLL and filter controls
  • Metal enclosure construction

Condition

  • Pre-Owned / Previously used
  • May show cosmetic wear from normal use
  • Untested accessories or cables may not be included unless stated
  • Ideal for restoration, vintage operation, or collector use

The MFJ-1224 remains a respected interface among amateur radio digital-mode operators for its flexibility, classic design, and compatibility with a wide range of legacy computer-radio systems.