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Universal M-8000
Multi-Mode Decoder


Replaced by
M-8000v5 and


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our Used List

Recently sold used

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Previous Models:
M  600
M  200F
M  200E
M  200
M  100E

Discontinued Radioteletype & Facsimile Equipment 



Modes & Specifications | Features | Options | Indicators | Larger Photo

Universal M-8000

The Universal M-8000 features capabilities not available in other demodulators and is a favorite with commercial users and dedicated hobbyists. The M-8000 offers the power to let you listen to the exciting world of radioteletype and FAX on shortwave, VHF and satellite! The VGA color output permits the presentation of more information than ever before. The incoming text is displayed in a 26 line, 80 character format. A detailed double status line indicates all current demodulator and decoder settings. The lower left corner displays five bar-graph type tuning bars. A horizontal window at the bottom of the screen shows a continuously updated, spectral display. A square window in the lower right corner features a simulated X-Y tuning scope.

The M-8000 handles all the "standard modes" plus ARQ-M2/4, FEC-A, FEC-S, ARQ-E, ARQ-E3, ARQ-S, SWED-ARQ, POL-ARQ, Packet, and Piccolo. The M-8000 has calibrated variable Baudot speeds with calibrated variable shifts. The M-8000 has five user programmable sel-cals. Program in one, two or three words (or codes) which will automatically activate your printer when they are received.

The M-8000 is semi-automated, utilizing a microprocessor to control shift tune and selection. Press a key and the M-8000 tunes the mark, finds the space, and displays the approximate shift. The M-8000 offers a user selectable initialization format and ten multi-function memories to store your most frequently used operating parameters. Manual tuning is facilitated by on-screen bargraph tuning indicators for level, mark and space plus a simulated tuning scope. Other features include: printer & video squelch, High-Low Tone select, 60, 85 and 1200 Hz shifts, six ASCII shifts, parity select and three position AGC. Instructive LEDs for:  Mark, Space, Buffer, CW Lock, Squelch, Idle, Sync., Sel-Cal, Data, Tuning Error and Data Error (helpful in determining correct speed, protocol and sync.). Other refinements you have come to expect include:  ATC, UOS, built-in diagnostics. Baudot, speed readout, external scope output plus serial and parallel printer ports. The M-8000 requires a VGA or SVGA analog color video monitor. A parallel printer, such as the Epson LX-300 may be connected if desired.

The M-8000 comes with a detailed Owner's Manual with schematic. Size:  16.4W x 3.5H x 12.5D inches (418x90x319 mm). Gray metal cabinet. 9 lbs. (4.1 kg) or 15 lbs. ship (6.8 kg). 115/230 VAC, 50/60 Hz. Manufactured in the U.S.A. by Digital Electronic Systems. Click here for specifications.

  The Universal M-8000v5 production version added:   ARQ6-90, Pactor and ACARS.

  The Universal M-8000v2 was an M-8000v1 that had a ROM upgrade adding:   ARQ6-90, Pactor and ACARS.

  The M-8000v7/7.5 replaced the M-8000v5.

  • Standard Baudot Shifts - 170/425/850
  • Extended Baudot Shifts - 60/85/1200
  • ASCII Shifts - 85/170/425/850/1200
  • Diversity Reception
  • ARQ Channel Watch - Multi-channel.
  • Speed Readout: Indicates the incoming RTTY transmission rate.
  • Auto Baud: Automatic Baud rate selection
  • Auto Shift: Automatic Shift Selection
  • Auto Tune: Automatic Baud, Shift, Sense
  • Beep At: 1-Keypress 2-SelCal 3-Bel char.
  • OPI Over Print Inhibit feature.
  • Direct Entry of Baud and Shift
  • Sel-Cals: 5 programmable sel-cals for automatic printer start-stop
  • External Scope Output
  • On-Screen Simulated Tuning Scope
  • Screen Print and Screen Saver
  • Spectral Display
  • User adjustable filtering control
  • VGA Color display (user selectable colors)
  • Support for laser printer (HPII compatible)
  • High Res. FAX with false color feature.
  • MSI Multiple Scroll Inhibit: Eliminates blank space on screen and/or printer.
  • ATC Automatic Threshold Control for improved copy during fading.
  • AGC Automatic Gain Control
  • UOS Unshift On Space auto shift to letters case after blank received.
  • Self Test: Built-in diagnostics
  • Squelch selectable for screen and/or printer.
  • Input Gain Control
  • Status Line with five on-screen tuning bars.
  • Four Alphabets: ITA2, MIL, TELEX, Cyrillic
  • Remote Terminal Operation
  • Real Time Clock/Calendar
  • Metal Case

Order # Mfg. Model Description Price Order
  Info-Tech Rack Ears Mounting brackets for a 19 inch rack. Discontinued
#0871 Universal OM M8000v1 M-8000v1 Owner's Manual.  Spiral-bound 105 pages VIEW $14.95 Order
#3521 Universal OM M8000v5 M-8000v5 Owner's Manual.  Spiral-bound 105 pages VIEW $19.95 Order
  Universal SM M8000 M-8000 Series service manual in 3-ring binder. Discontinued
  Info-Tech ROM M8000v2 Upgrade ROM for M8000v1 adds ARQ6-90, Pactor and ACARS. INFO Discontinued
  Epson LX-300+ Quiet dot matrix printer (220 CPS draft or 44-53 CPS NLQ). Discontinued
  HOD CA314BD Parallel printer cable. DB25 to Centronics. Six foot RFI shielded. Discontinued

Copyright 2005-2023, Universal Radio, Inc.

R1 V1 13200-13704
R2 V5 82001-82500
R3 V7 83001-83504