Page 47FT-
991
(
)
When the desired signal is extremely strong or the noise level is high on a low frequency band, activate the attenuator to
reduce the incoming signal from the antenna.
1. Press the
F
button, then touch
[
]
on
the LCD. The “
” indicator will appear in the
DSP display.
The incoming signal level is reduced by 12dB
(
Signal voltage is reduced to 1/4 compared to OFF
)
.
F
(
M-LIST
)
Button
Displays ATT
2. To restore full signal strength through the Attenuator
circuit, touch
[
]
on the LCD to return the ATT
display to the “
OFF
” position.
If the noise level is high or the received signal is extremely strong, the incoming signal level can be suppressed with the
IPO/ATT settings.
If the S-meter uctuates S-3 or more in the noise level, or the received signal is extremely strong and it causes a high S-
meter indication
(
+20dB or more
)
, activate the attenuator.
Since IPO does not only attenuate the incoming signal, but also improves the cross modulation characteristic, try to ac-
tivate the IPO rst. If the signal is still strong, also use the ATT. In this way, you can attenuate the incoming signal and
noise eectively.
To Next Page
Loading...
Need help?
General
