Note
Ham Radio, Dec 1977, p. 82.
QST, Jul 1978, p. 97.
QST, Jan 1980, p. 156.
QST, Feb 1981, p. 135.
QST, Feb 1982, p. 171.
he MVD-1000 connects between your station receiver and video monitor, or slightly modified television receiver to provide a complete 6-60 WPM Morse code receiving system. The Morse code audio signal from the speaker terminals or phone jack is converted to a standard composite video signal which can be used to drive a video monitor or the video amplifier of a television receiver.
The unit displays 16 lines of 32 characters per page with two pages of displays. When the screen is full, automatic scrolling shifts all lines up one line causing the top line to be stored on the second page, allowing new characters to be written on the bottom line. The recall feature allows you to look at the second page while still copying incoming code on the first page.
The unit will copy letters, numbers, punctuation, and five special characters for a total of 51 decoded Morse characters.
Automatic and manual speed tracking are provided to accommodate wide variations in the Morse code signal. A 4-pole active filter provides a 200-Hz bandwidth for excellent QRM rejection.
A practice input is also provided, for a straight key or keyer output, to allow the user to practice sending while displaying what is sent on the display.