Icom IC-7200 Instruction Manual - Page 45

4 RECEIVE AND TRANSMIT D RTTY reverse mode Received characters are occasionally garbled when the receive signal is reversed between MARK and SPACE. This reversal can be caused by incorrect TNC connections, settings, commands, etc. To receive a reversed RTTY signal correctly, select RTTY-R (RTTY reverse) mode. q P ush MODE to select RTTY mode. w A fter RTTY mode is selected, push and hold MODE for 1 sec. to toggle between RTTY and RTTY-R modes. D Twin peak filter The twin peak filter changes the receive frequency response by boosting two particular frequencies (2125 and 2295 Hz) for better copying of desired RTTY signals. q P ush MODE to select RTTY mode. • After RTTY mode is selected, push and hold MODE for 1 sec. to toggle between RTTY and RTTY-R modes. w Push and hold M-CH/RIT SET for 1 sec. to enter the quick set mode. e Rotate [M-CH] to select "TPF", then rotate [DIAL] to select the twin peak filter function ON or OFF. • The received audio volume may become greater when the twin peak filter is turned ON. r P ush M-CH/RIT SET to exit the quick set mode and re- turn to normal operation. MODE TS TUNER FILTER SPCH NB NR ANF METER V/M 1 1.8 A=/B 2 3.5 SPLIT 3 7 MW 4 10 M-CL 5 14 AGC 6 18 COMP271 RIT . GENE SCAN 8 24 MNF 0 50 VOX 9 28 F-INP ENT BAND P.AMP ATT M-CH/RIT SET Normal Space Mark 170 2125 Hz Hz BFO Displayed freq. Reverse Space Mark 2125 170 Hz Hz BFO Displayed freq. MODE TS TUNER FILTER SPCH [DIAL] NB NR ANF METER V/M 1 1.8 A=/B 2 3.5 SPLIT 3 7 MW 4 10 M-CL 5 14 AGC 6 18 COMP271 RIT . GENE SCAN 8 24 MNF 0 50 VOX 9 28 F-INP ENT BAND P.AMP ATT M-CH/RIT SET [M-CH] OFF (default) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 40