Hal Communications CWR6850, Instruction Manual

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CHAPTER 4 PAGE 20
4.2 Transmit Features
In addition to the features discussed above with regard to the keyboard, the CWR6850 with key-
board offers many transmit features, giving a great deal of operational flexibility. These features
will be discussed in detail throughout this chapter, but here is a summary of the most important
ones.
Text typed on the keyboard can be entered into the CWR6850 in a form of "split-screen" mode.
Three lines of transmit text are shown on page 1 and all fifteen lines are shown on display page 2.
Any or all of these lines of transmit "buffer" may be typed while receiving.
An automatic transmit-receive control circuit is provided so that the CWR6850 can control the
transmit-receive operation of the station, turning the transmitter on when text is to be transmitted
and off when transmission is complete. The KOS feature (for Keyboard Operated Switch) is dis-
cussed in Section 4.13.
The CWR6850 can Transmit (and receive) from various I/O (Input/Output) devices using several
different I/O interfaces. For example, data can be interfaced from audio sources (receiver, trans-
mitter, tape recorder) or with TTL data connections (computer, some machine and modems). Use
these I/O connections is discussed in Chapter 5.
To demonstrate use of the transmit features, we will use the CW (Morse code) mode, listening to
the CWR6850 sidetone monitor. For the present, a transmitter connection will not be required.
Please set-up the CWR6850 front panel switches as shown on the following page.
You may notice that a switch setting is given for all switches, even though many have no effect in
CW mode; these switch settings will be used for the RTTY explanations that follow this section.
Press and release the RESET button on the CWR6850 to clear-out any text that may remain on the
screen. Now, type a line of text on the keyboard – such as "Now is the time for all good men" (do
not use the RETURN or LF keys at this time). Notice how the text you've typed is displayed on the
top lines of dots at the bottom of the screen. Also note that all the letters typed are capitalized –
this is because there is no upper/lower case in Morse code; Baudot is the same. ASCII code, how-
ever, does have valid codes for both upper and lower case letters and either may be typed (LOCK
button out). You may find it useful to refer to APPENDIX A and APPENDIX B at the end of this
manual for a discussion of control commands and screen formats.