Page 51FTDX5000 OPERATING MANUAL
IPO
(
INTERCEPT POINT OPTIMIZATION
)
The IPO feature allows the operator to optimize the characteristics of the receiver front end, depending on the current noise
level and the strength of incoming signals.
VFO-A IPO Setup
Press the
[
A
]
button to activate VFO-A receiver (The
[
A
]
button will glow red).
Move the
[
IPO
]
knob up or down to set the desired
characteristic of the VFO-A receiver front end, per the
chart below.
AMP1AMP1
AMP1AMP1
AMP1: Amplifies the incoming signal, using a low
distortion RF preamplifier (normally, the IPO
is set to this position).
AMP2AMP2
AMP2AMP2
AMP2: Increases receiver sensitivity.
IPO1IPO1
IPO1IPO1
IPO1: Improves the IPO.
IPO2IPO2
IPO2IPO2
IPO2: Bypasses the RF preamplifier, yielding di-
rect feed to the first mixer. As a result, the
IPO is improved more.
The selected receiver RF preamplifier will be indicated
in the IPO column of the Block Diagram Display.
CONVENIENCE FEATURES
VFO-B IPO Setup
Press the
[
B
]
button to activate VFO-B receiver (The
[
B
]
button will glow orange).
Move the
[
IPO
]
knob up or down to set the desired
characteristic of the VFO-B receiver front end, per the
chart below.
AMP1AMP1
AMP1AMP1
AMP1: Amplifies the incoming signal, using a low
distortion RF preamplifier (normally, the IPO
is set to this position).
AMP2AMP2
AMP2AMP2
AMP2: Increases receiver sensitivity.
IPO1IPO1
IPO1IPO1
IPO1: Improves the IPO.
The selected receiver RF preamplifier will be indicated
in the IPO column of the Block Diagram Display.
ADVICE:
On the 10 MHz and lower bands, it generally is not necessary to use any preamplifier at all; selecting the “
IPOIPO
IPOIPO
IPO” position as
described above will increase the strong-signal-handling capability of the receiver, and usually result in more pleasant
reception due to reduced noise. If you can hear band noise with the preamplifiers disengaged, then a preamplifier is gener-
ally not needed.
[
A
]
Button
[
IPO
]
Knob
[
B
]
Button
[
IPO
]
Knob
Press the
[
IPO
]
knob briefly, to quickly set the IPO to
“AMP1”.
Press the
[
IPO
]
knob briefly, to quickly set the IPO to
“AMP1”.
AMP1
IPO1
IPO2
AMP
AMP
AMP2
IPO1
IPO2
IPO1
AMP1
AMP
AMP
AMP2