Automatic Antenna Tuner; Channel Memories; Memory Content; Table 7 - Memory Channel Number - Yaesu FT-450 User Manual

YAESU HF/50 mHz Transceiver FT-450 User's Manual
4.3

Automatic Antenna Tuner

The built in automatic antenna tuner will match the output through a 50 ohm line if
the SWR of the antenna without the tuner is 3:1 or less. The antenna tuner is
toggled on or off by pressing the "TUNE○" button located just below the right
edge of the display. When the tuner is on, the word TUNER is displayed just above
the start of the frequency display.
To operate the automatic antenna tuner, t-press the "TUNE○" button for one
second. The TX will light up during the operation and you might hear the tuner operation
for a couple of second. If the operation fails (usually because of excessive SWR), the
antenna symbol at the start of the diagram on the display will flash until the tuner is
either turned off or run successfully.
5

Channel Memories

The FT-450 contains 508 memory channels as well as M-TUNE, VFO-A, VFO-B, QUICK, and HOME.
The memory channels may be addressed one of two ways per Table 7 according to the setting in
adaptation.
Group Memory "OFF"
MEM-001 ~ MEM-050
MEM-051 ~ MEM-100
MEM-101 ~ MEM-150
MEM-151 ~ MEM-200
MEM-201 ~ MEM-250
MEM-251 ~ MEM-300
MEM-301 ~ MEM-350
MEM-351 ~ MEM-400
MEM-401 ~ MEM-450
MEM-451 ~ MEM-500
MEM-P1L ~ MEM-P2U
MEM-EMG
US5-001 ~ US5-005
5.1

Memory Content

All of the configuration data specific to a single channel is known as the VFO setup data. Absent from
this data are the current functional status such as transmit or the transceiver state such as menu. The
contents are described in Table 8.
The state of the clarifier (CLAR) is also maintained between working and band memories, but not in the
channel meories. A VFO setup does not include the position of any knobs. In addition it does not include
the state of TUNER, BUSY, TX, KEYER, VOX, BK-IN, P.BACK, FAST, LOCK, MENU, SPLIT, and
F.
Group Memory "ON"
M-01-01 ~ M-01-50
M-01-01 ~ M-01-50
M-01-01 ~ M-01-50
M-01-01 ~ M-01-50
M-01-01 ~ M-01-50
M-01-01 ~ M-01-50
M-01-01 ~ M-01-50
M-01-01 ~ M-01-50
M-01-01 ~ M-01-50
M-01-01 ~ M-01-50
M-11-1L ~ M-11-2U
M-12-EM
M-13-01 ~ M-13-05
Table 7 – Memory Channel Number
- 12 -