CHAPTER 1
‘SWL’ PRELIMINARY CHECKOUT
After unpacking your unit, make sure that power to the computer
is turned off, then plug the ‘SHORTWAVE LISTENER’ cartridge into
the “expansion port” (The same one used for game and memory expan
sion modules), so that the label is on top, facing up. Turn on the com
puter and video monitor. The word “MICROLOG” will appear on the
screen for several seconds then the following “TOPLINE” display
should appear on the video screen.
R B 0 6 0 W P M N O R U
0 0 : 0 0
U T C
This indicates that the system is set to receive (R) Radio teletype,
using Baudot (B) code at 60 WPM, and that the built-in dual tone
demodulator is selected in the Normal (NOR) mode, with the “UN
SHIFT on SPACE” feature enabled (U). A four digit HH:MM clock
which should start advancing is displayed with flashing colon. UTC is
the time zone displayed until you change it.
The “Split Screen” cursor will be displayed in the left center of the
screen in white. The receive text cursor will be at the bottom left screen
in yellow. If using a monochrome (black and white) TV/monitor, colors
will appear as shades of gray.
In the event that the above does not appear on your video
monitor’s screen, check the cable between the computer and the TV
monitor to make sure that it is not shorted or open. You may also have
to adjust the TV monitor’s various controls such as brightness, contrast,
etc. Some monitors provide a switch which selects a low or high im-
pedence input. You should select the low impedence (75 OHM) input.
Also, if your monitor has a “PICTURE-DATA” switch it should be in
the “DATA” position. Connections to a standard television are exactly
the same as when using the computer.
DEMO TAPE NOTES
A standard audio cassette is included with your “SWL” cartridge.
It is not a program — do not try to “load” this tape. It is a demo of the
SWL’s receiving capability and should be played on a normal audio
cassette player. Connect the earphone or external speaker output of the
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