Hal Communications CWR6850, Instruction Manual

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CHAPTER 3 PAGE 12
CHAPTER 3
RECEIVING WITH THE CWR6850
3.1 Connecting the CWR6850 to your receiver
Connecting the CWR6850 to your receiver can be extremely simple – just hook a cable between
the receiver audio output (external speaker or phone patch output jacks) and the "AF IN - RX"
connector on the CWR6850 rear panel. Most receivers can be connected with a standard "high-fi-
delity" phono-to-phono cable, available at all "HI-FI" shops (some receiver external speaker jacks
may require an adapter, so check out your receiver before you buy the cable). Or, if you like to
make cables, use the phono plugs supplied in the CWR6850 accessories. By all means, use
shielded cables – this will reduce the chances of RFI from the linear when you start transmitting!
The CWR6850 has been designed to work well directly from the low-impedance speaker output.
Refer to Figure 2 in the previous chapter for these simple CWR6850 connections; full connections
are found in Figure 5 in Chapter 5.
The CWR6850 includes its own monitor speaker so that you may continue to listen to the receiver
output even if the receiver's internal speaker is disconnected when you connect the CWR6850. The
left-hand vertical slide control (INPUT) on the front panel controls this monitor volume level. If you
wish, an external speaker may also be connected to the "EXT SP" jack on the CWR685 rear panel.
Even though we are just thinking about receiving at the present, this is a good time to put in a
good ground between the receiver and CWR6850. Use a short, low-inductance wire, preferably a
¼" or wider piece of shield braid. Make the ground lead as short as convenient, direct from the
CWR6850 cabinet to the receiver (or transceiver) ground terminal. Again, this is most important for
transmitter RFI protection, but it may also prevent receive RFI problems. By all means, if you are
using an AC power supply, USE GROUNDING TYPE AC OUTLETS – or add a ground wire between
the power supply cabinet and good water-pipe ground – this is a safety measure that does not re-
place the need for a good RF ground.
Finally, connect power to the receiver and CWR6850 and turn-on the power switches to each.
Proper settings for the CWR6880 front panel switches will discussed in the next section. You may
also wish to refer to APPENDIX B at the rear of this manual for explanation of the display page ar-
rangement of the CWR6850.