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FM TRANSMISSION ............................................. 38
FM REPEATER OPERATION ............................ 38
Selecting Subtone Frequency ....................... 39
Continuous or Burst Subtones? .................... 39
AM TRANSMISSION ............................................. 40
DIGITAL OPERATION ........................................... 40
RTTY (FREQUENCY SHIFT KEYING) .............. 40
ERROR-CHECKING MODES (AMTOR/ PACKET/
PACTOR/ G-TOR/ CLOVER .............................. 41
SPLIT-FREQUENCY OPERATION........................ 42
TF-SET (TRANSMIT FREQUENCY SET).......... 43
SATELLITE OPERATION .................................. 43
CHAPTER 7 OPERATING AIDS 44
RECEIVING ........................................................... 44
RIT (RECEIVE INCREMENTAL TUNING) ......... 44
AGC (AUTOMATIC GAIN CONTROL) ............... 44
Changing AGC ............................................. 44
Changing AF AGC ........................................ 44
TRANSMITTING .................................................... 45
VOX (VOICE-OPERATED TRANSMIT) ............. 45
Microphone Input Level Adjustment .............. 45
Delay Time Adjustment ................................. 45
TRANSMIT INHIBIT........................................... 45
XIT (TRANSMIT INCREMENTAL TUNING) ....... 45
SPEECH PROCESSOR (SSB/AM).................... 46
CHANGING FREQUENCY WHILE
TRANSMITTING................................................ 46
TRANSMIT MONITOR ...................................... 46
CUSTOMIZING TRANSMIT SIGNAL
CHARACTERISTICS (SSB/AM) ........................ 47
Changing Transmit Bandwidth ...................... 47
Transmit Bandshift ........................................ 47
Equalizing Transmit Audio ............................. 47
Microphone AGC .......................................... 47
AUTOMATIC MODE .............................................. 48
AUTOMATIC MODE BOUNDARIES .................. 48
USING AUTOMATIC MODE .............................. 48
AUTOMATIC ANTENNA TUNER ........................... 49
PRESETTING (INTERNAL TUNER ONLY)........ 49
INTERNAL TUNER............................................ 49
AT-300 EXTERNAL TUNER (OPTIONAL) ......... 50
COMPUTER [\ TRANSCEIVER INTERFACE ... 50
COMMUNICATION PARAMETERS ................... 50
CHAPTER 8 REJECTING INTERFERENCE 51
DSP TOOLS .......................................................... 51
SLOPE TUNING (SSB/AM) ............................... 51
IF SHIFT (CW)................................................... 51
CHANGING RECEIVE BANDWIDTH
(CW/FSK/FM) .................................................... 52
ADAPTIVE FILTERS ......................................... 52
AUTO NOTCH (SSB) ........................................ 52
BEAT CANCEL (SSB/AM) ................................. 52
NOISE REDUCTION (SSB/CW/FSK/AM) .......... 53
SETTING SPAC TIME ....................................... 53
NOISE BLANKER .................................................. 53
AIP (ADVANCED INTERCEPT POINT) ................. 53
ATTENUATOR ....................................................... 53
CHAPTER 9 MEMORY FEATURES 54
MICROPROCESSOR MEMORY BACKUP............ 54
CONVENTIONAL OR QUICK MEMORY? ............. 54
CONVENTIONAL MEMORY.................................. 54
MEMORY CHANNEL DATA............................... 54
MEMORY CHANNEL STORAGE ...................... 54
Simplex Channels ......................................... 54
Split-Frequency Channels ............................. 55
MEMORY CHANNEL RECALL .......................... 55
Quick Channel Search .................................. 55
Temporary Frequency Changes .................... 56
MEMORY CHANNEL SCROLL ......................... 56
MEMORY TRANSFER ...................................... 56
Memory \ VFO Transfers ........................... 56
Channel to Channel Transfers....................... 57
ERASING MEMORY CHANNELS ..................... 57
Full Reset ..................................................... 57
STORING SCAN LIMITS IN CH 99.................... 58
Confirming Start/End Frequencies ................ 58
Programmable VFO Function ....................... 58
QUICK MEMORY .................................................. 59
STORING INTO QUICK MEMORY .................... 59
RECALLING FROM QUICK MEMORY .............. 59
TEMPORARY FREQUENCY CHANGES .......... 59
QUICK MEMORY \ VFO................................. 59
CHAPTER 10 SCAN 60
PROGRAM SCAN ................................................. 60
SCAN HOLD ..................................................... 60
CONFIRMING START/END LIMITS................... 60
MEMORY SCAN ................................................... 61
BUSY FREQUENCY STOP ............................... 61
Scan Resume Methods ................................ 61
ALL-CHANNEL SCAN ....................................... 61
GROUP SCAN .................................................. 62
MEMORY CHANNEL LOCKOUT ...................... 62
SETTING SCAN SPEED ....................................... 62