[GreenKeys] TTY distortion analyzers

[w7ksg at juno.com]

FOR SALE:

STELMA TDA-2S telegraphic distortion analyzer. Measures the bias and
distortion of
start-stop telegraph signals at speeds of 60, 75, and 100 words per
minute on 20 or 
60ma metered polar circuits.

CIRCUIT DATA CORP.  Model CDA770 telegraphic distortion analyzer. With
comprehensive manual.  Excellent condition.        

DIGITECH DT603-2 TTY distortion analyzer.  Excellent condition.  Measures
marking and spacing bias, marking and spacing end, total, early, and late
peak.  Internal synch speeds of 45.5,
50, 74.2 and 110 baud.  External oscillator sync speeds up to 1200 baud. 
Accuracy of measured distortion of + or - 2%.  Measurement code is
standard five bit start-stop Baudot with any length stop interval.

DATA PRODUCTS Model DMS303 TTY distortion analyzer.  Modes: Error count -
Rev and Rand., Parity count; Distortion - Peak, Bias and End.  Bit rate:
37.5. 50, 75, 150, 300, 600, 1200. 2400, 4800, 9600, and ext.

DATA PRODUCTS Model PG303 Pattern Generator.  Outputs the following
patterns:
Fox message (5-level or 8-level code); reversals, selected charactors (5,
6, 7, or 8 level
Code); random pattern, steady Mark or Space. Ten fixed rates (bits per
section): 37.5,
50, 75, 150,300, 600,1200, 2400, 4800, 9600.

UNIVERSAL M7000 communications terminal.  Has printer and video options.
Excellent condition.

More information available if interested.

J
W7KSG