Programmable Memory Scan - Yaesu FT-847 Operating Manual

Hf + v-uhf all mode transceiver
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Programmable Memory Scan

The Programmable Memory Scan utilizes the "U " and "L" memories to provide sub-bands within scanning can
take place. For example, on the 2-meter band, you may wish to limit FM scanning to 144.5 ~ 148 MHz, to avoid
encroachment on the SSB/CW sub-band between 144.0 and 144.5 MHz.
Program the lower frequency limit of the sub-band
to be scanned into the "L" memory location, and
the upper sub-band limit into the "U" memory lo-
cation.
For example, load 439.000 MHz into "L " and
449.900 MHz into "U" per the procedures described
on page 70 for "Main Memory System" program-
ming.
Adjust the SQL (Squelch) control so that the back-
ground noise is just silenced.
ƒ
Press the [6(PMS)] key to enter the Programmable
Memory Scan mode.
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 performing
VFO scanning; however, scanning will be restricted
to the frequency range established by the "L" and
"U" memories. The transceiver will "beep" when a
sub-band limit is reached.
...
If the scanner encounters a signal strong enough to
open the squelch, the scanner will slow down (SSB/
CW modes) or halt and pause on that channel in
accordance with the "hold" time set via Menu #26
(FM/AM modes, see page 86).
80
To reverse the direction of the scan, turn either the
MAIN VFO Tuning Dial or the MEM/VFO CH
knob to the left (while scanning upward) or to the
right (while scanning downward).
To exit the PMS mode, press the [6(PMS)] key
once more.
Notes: The PMS system rounds off the "L" and "U "
memory frequencies to the the next-lowest 100
kHz multiple for the purposes of establishing a
band edge. Therefore, if Memory "U" is set to
439.820 MHz, the Upper PMS band limit will
be 449.800 MHz. If the "L" memory is set to
439.080, the Lower PMS band limit will be
439.000 MHz.
For the purposes of PMS scanning, the oper-
ating mode and synthesizer steps programmed
into the frequency associated with the "L "
memory slot will be utilized.
FT-847 O
M
PERATING
ANUAL

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