Yaesu FT-847 Operating Manual

Also see for FT-847: Technical supplement Technical supplement Technical supplement Modification

Contents

80 FT-847 OPERATING MANUALThe Programmable Memory Scan utilizes the “U ” and “L” memories to provide sub-bands within scanning cantake place. For example, on the 2-meter band, you may wish to limit FM scanning to 144.5 ~ 148 MHz, to avoidencroachment on the SSB/CW sub-band between 144.0 and 144.5 MHz.Programmable Memory ScanÅ Program the lower frequency limit of the sub-bandto be scanned into the “ L” memory location, andthe upper sub-band limit into the “U” memory lo-cation.For example, load 439.000 MHz into “ L ” and449.900 MHz into “ U” per the procedures describedon page 70 for “Main Memory System” program-ming.Ç Adjust the SQL (Squelch) control so that the back-ground noise is just silenced.É Press the [6(PMS)] key to enter the ProgrammableMemory Scan mode.Ñ Now press the [4(SCAN)] key to initiate PMS scan-ning. The scanner will begin scanning in an up-ward direction, as though you were performingVFO scanning; however, scanning will be restrictedto the frequency range established by the “L” and“ U” memories. The transceiver will “beep” when asub-band limit is reached.Ö If the scanner encounters a signal strong enough toopen the squelch, the scanner will slow down (SSB/CW modes) or halt and pause on that channel inaccordance with the “hold” time set via Menu #26(FM/AM modes, see page 86).Ü To reverse the direction of the scan, turn either theMAIN VFO Tuning Dial or the MEM/VFO CHknob to the left (while scanning upward) or to theright (while scanning downward).á To exit the PMS mode, press the [6(PMS)] keyonce more.Notes: The PMS system rounds off the “L” and “U ”memory frequencies to the the next-lowest 100kHz multiple for the purposes of establishing aband edge. Therefore, if Memory “ U” is set to439.820 MHz, the Upper PMS band limit willbe 449.800 MHz. If the “L” memory is set to439.080, the Lower PMS band limit will be439.000 MHz.For the purposes of PMS scanning, the oper-ating mode and synthesizer steps programmedinto the frequency associated with the “L ”memory slot will be utilized.