Kenwood TS-990S Operation Manual - Page 139

SELECTING PSK31 OR PSK63 The transceiver can operate in PSK31 and BPSK modes as well as in PSK63, which offers double the transfer rate. Follow the procedure below to select one of them. 1 Press [FSK/ PSK/ REV] to enter PSK mode. 2 Press [DECODE] (F3) to open the PSK Encode/ Decode screen. 3 Press [31/63] (F3). • Toggles between BPSK31 and BPSK63 or QPSK31 and BPSK63. Toggles the display between "31" and "63" on the right of the status bar. • If [31/63] (F3) is unavailable in the function key guide, press [MORE] (F1). An alternate key guide will appear. Note: ◆◆PSK63 offers you the high speed transmission ratio; however, there is less tolerance of incorrect phase in the carrier wave. Hence, you need to accurately tune. 1 Connect a USB keyboard to the (USB-A) connector. 2 Press [FSK/ PSK/ REV] to enter PSK mode. 3 Press [DECODE] (F3) to open the PSK Encode/ Decode screen. 4 Press [F12] of a USB keyboard to transmit. The "BUSY/TX" LED lights red and "ENCODE" appears on the status bar. 5 Enter the text strings using the USB keyboard. • The entered text string is placed and displayed in the text string buffer and transmitted as entered. • Each letter in the text string buffer changes its color in sequence when the letter is transmitted. • Each letter transmitted appears sequentially in the TX and RX Transcript. 6 Press [F12] of a USB keyboard to receive. Note: ◆◆If letters not transmitted yet remain in the text string buffer when [F12] is pressed at step 6, "WAIT" appears on the status bar. When the entire text string is transmitted, the transceiver enters the receive mode and the "BUSY/TX" LED and "WAIT" are unlit. Contents Index 5-59