Icom IC-7200 Instruction Manual - Page 44

4 RECEIVE AND TRANSMIT ■ Operating RTTY (FSK) When using your RTTY terminal or TNC, consult the manual that comes with the RTTY terminal or TNC. q P ush and hold F-INP ENT BAND for 1 sec., then push a band key to select the desired band. w 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. e Rotate [DIAL] to tune in a desired signal. • The S-meter indicates received signal strength when signal is received. • If the received signal cannot be demodulated, try se- lecting RTTY-R mode (or RTTY mode). r Transmit a SEND signal from your TNC. • " " appears. • The PO meter indicates the transmitted RTTY signal strength. t Use the connected PC or TNC (TU) to transmit RTTY (FSK) signals. Band keys 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 [DIAL] F-INP ENT BAND Appears while transmitting. "RTTY" or "RTTY-R" appears. D Convenient functions for receive • Preamp and attenuator (p. 45) ➥ Push P.AMP ATT to turn the preamp ON or OFF. • " " appears when the preamp is set to ON. ➥ Push and hold P.AMP ATT for 1 sec. to turn the attenu- ator ON. • Push P.AMP ATT to turn the attenuator OFF. • " " appears when the attenuator is set to ON. • Twin PBT (passband tuning) (p. 46) ➥ Rotate [TWIN PBT] (controls-inner/outer). • AGC (auto gain control) (p. 45) ➥ Push AGC once or twice to select the time constant for the AGC circuit fast and slow. • "F.AGC" appears when the fast time constant is selected, and no indicator appears when the slow time constant is selected, respectively. ➥ Push and hold AGC for 1 sec. to turn the AGC function OFF. • "AGC-OFF" appears on the display. • Noise blanker (p. 49) ➥ Push NB to turn the noise blanker ON or OFF. • " " appears when the noise blanker is set to ON. ➥ Push and hold NB for 1 sec. to enter the noise blanker set mode, then rotate [DIAL] to adjust the threshold level, or the blank time. • Rotate [M-CH] to select an item. • Noise reduction (p. 50) ➥ Push NR to turn the noise reduction ON or OFF. • " " appears when the noise reduction is ON. ➥ Push and hold NR for 1 sec. to enter the noise reduction level set mode, then rotate [DIAL] to adjust the noise reduction level. • Manual notch filter (pgs. 51, 52) ➥ Push MNF to turn the manual notch filter ON or OFF. • " " appears when the manual notch filter is set to ON. ➥ Push and hold MNF for 1 sec. to enter the man- ual notch filter set mode, then rotate [DIAL] to select the filter width from narrow, middle and wide. • ¼ function (p. 79) q P ush and hold M-CH/RIT SET for 1 sec. twice to enter the set mode. w R otate [M-CH] to select "DIAL ¼". e R otate [DIAL] to turn the 1⁄4 function ON or OFF. r P ush M-CH/RIT SET to exit the set mode and return to normal operation. 39