3: Operation
3-6 PRC1099A-MSOP
• Change the channel frequency. The PRC1099A can change to new
frequencies as quickly as you can turn the Channel knob. Unless the
jammer is using very advanced jamming equipment, it takes time to find
the operating frequency and to start jamming. Many different procedures
can minimize jamming. Two typical procedures follow:
1. Use specified channel frequencies in specific time slots. For
example, use channel 1 from 00 minutes to 15 minutes past the hour,
and so on, in a similar sequence.
2. Set up a schedule of frequency changes. When jamming commences,
change to the next frequency listed in the schedule. This procedure is
particularly effective when only two stations are communicating.
CW Operation
The PRC1099A operates in CW mode (telegraphy) when the key is installed
in one of the audio connectors. The transceiver automatically switches to CW
mode for semi break-in keying. This means the transmitter is held on when the
key is depressed and automatically returns to receive when there is a short
break in transmission. A receiver sidetone monitors the keying.
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