Hal Communications CWR6850, Instruction Manual

Page: 9 / 64

CHAPTER 2 PAGE 9
A/MODE B button in (selecting MODE B) and try cycling the PAGE button several times.
Now you can see all for pages of the display in sequence. The meaning of the different
formats will be explained as we progress through receive and transmit applications of
the CWR6850. After experimenting with the PAGE and MODE buttons, reset to MODE A
(button out) and PAGE "1" on the screen. The screen and page format are explained in
APPENDIX B.
4. A letter "P" appears on the same line as the reverse video page number. This letter is a
status indicator, showing that the printer output has been turned on. You may turn the
printer on and off by typing "CTRL-P" on the keyboard (press and hold CTRL key while
pressing and releasing the P key – just like a SHIFT key on a typewriter). After experi-
menting with CTRL-P, set the printer back to the "ON" condition (letter "P" on screen).
Special control features of the CWR6850 are indicated by appropriate letters placed on
this line. These features will be explained in detail later in this manual; the commands
are listed in APPENDIX A.
2.3 Presetting the Transceiver Controls
Preset your transceiver controls as follows:
FREQUENCY: 14.075 to 14.100 MHz
ANTENNA: Antenna for above frequency range
MODE: LSB (lower sideband) *
PASSBAND TUNING: LSB
RECEIVER AGC: ON – SLOW
RCVR SELECTIVITY: 2 kHz – voice bandwidth
RCVR RF GAIN: Maximum
XMTR MIC. GAIN: Minimum
XMTR VOX: Off
POWER SWITCH: On
RCVR AUDIO VOL: Comfortable Level
* Use RTTY on Drake TR7; LSB on all other transceivers
You should now be able to tune signals on the receiver and hear them either on the receiver
speaker or through the internal speaker of the CWR6850. If you are using the internal CWR6850
speaker, use the INPUT control on the CWR6850 to control the volume.
2.4 RTTY Operation
Tune the receiver for a RTTY signal ("deedle-deedle" noise). RTTY tuning is shown by the MARK
and SPACE LEDs flash alternately as the RTTY signal tone changes back and forth between mark
and space signal conditions. As you tune past the RTTY signal, you will notice that first one light
and then the other flashes to the signal; optimum tuning is the setting that causes both to flash.
With some practice, this is very easy to do. When the receiver tuning is correctly set, you should
start seeing understandable text on the screen. If not, check that all CWR6850 and transceiver set-
tings are correct; then try the NOR/REV switch and various speeds and shifts.