Page 66
FT-450 O
PERATION
M
ANUAL
P
ROGRAMMABLE
M
EMORY
S
CANNING
(PMS)
To limit scanning (and manual tuning) within a particular frequency range, you can use the Programmable
Memory Scanning (PMS) feature, which utilizes two special-purpose memory pairs (“MEM-P1L/MEM-P1U” and
“MEM-P2L/MEM-P2U”). The PMS feature is especially useful in helping you to observe any operating sub-band
limits, which apply to your Amateur license class.
1. Store the Lower and Upper tuning/scanning limit
frequencies into the memory pair “MEM-P1L” and
“MEM-P1U”, respectively, or “MEM-P2L” and
“MEM-P2U”. See page 58 for details regarding
memory storage.
2. Press the [
F
] button, followed by the [
PMS/SCAN
]
button.
3. Rotate the [
DSP/SEL
] knob to select “
PMS-1
”
“
PMS2
” or “
PMS1+2
”.
PMS-1
:
The scanner will be limited within the
frequency range programmed in the
memory pair “MEM-P1L/MEM-P1U”.
PMS-2
:
The scanner will be limited within the
frequency range programmed in the
memory pair “MEM-P2L/MEM-P2U”.
PMS-1+2
: The scanner will be limited within the
frequency ranges programmed by both
memory pairs (“MEM-P1L/MEM-P1U”
and “MEM-P2L/MEM-P2U”).
If a memory pair is vacant, the PMS-1+2 selec-
tion is not available.
4. Press the [
PMS/SCAN
] button.
5. Rotate the [
SQL/RF GAIN
] knob just to the point
where the noise is silenced and the “
” indi-
cator on the display turns off.
6. Press the [
PMS/SCAN
] key to initiate upward
scanning (toward higher frequencies or higher
memory channel numbers).
7. If you want to change direction of the scan while it
is underway, rotate the [
MAIN DIAL
] knob one click
in the opposite direction (in this case, one click
counter-clockwise). You will see the scanner re-
verse direction and scan down in frequency.
You may change the direction of the scanner by
pressing and holding the microphone’s [
UP
]/
[
DWN
] key for one second, if you are using the
optional
MH-31
A8J
Hand Microphone or
MD-
100
A8X
Desktop Microphone.
8. In FM/AM mode, when the scanner encounters a
signal strong enough to open the squelch, the
scanner will halt for five seconds, after which scan-
ning will resume.
In the SSB/CW and SSB-based Data modes,
when the scanner encounters a signal strong
enough to open the squelch, the scanner will step
across the signal very slowly, giving you time to
stop the scan, if you like.
A
DVICE
:
You may select the manner in which the scanner re-
sumes while it has paused on a signal, using Menu
Item “
SCN RES
” The default “
5Sec
” setting will cause
the scanner to resume scanning after five seconds;
you may change it, however, to resume only after the
carrier has dropped out, if you like See page 83.
[
DSP/SEL
] Knob
[
PMS/SCAN
] button
[
SQL/RF GAIN
] Knob
[
MAIN DIAL
] Knob
[
F
] button
