Notch; Mode - Ten-Tec Orion 565 Manual

The DSP noise blanker is adjustable
independently for each receiver, depending
on which is selected for control by the MAIN
RX and SUB RX buttons located between
the two large main tuning knobs. See
description later in this chapter of (55) SUB
RX and (56) MAIN RX for information on
these buttons and their functions.
Separate from the DSP NB, the main
receiver only has a hardware noise blanker
available. See the description of the
hardware noise blanker in chapter 3 under
(RX) RX MENU. This main receiver
hardware noise blanker can be used
together with or separate from the DSP NB.
The hardware NB can be turned on and off
from the front panel by pressing and holding
the NB button for two seconds. It also can
be turned on or off through the menu
system. When the hardware noise blanker
is activated on the main receiver, an
annunicator marked :H will appear next to
the software noise blanker value on the
screen.
(24) NR
ORION is equipped with DSP noise
reduction that is independently adjustable
for each receiver.
There are nine different settings, and each
of the nine are used to determine how
aggressively (quickly) the NR adapts and
identifies what is signal and what is noise.
Once the noise reduction value has been set
for a given signal, no further adjustment of
the noise reduction control is needed.
Turning the NR to a higher value adjusts
only how fast it adapts to a given signal vs.
noise situation.
The DSP noise reduction is adjustable
independently for each receiver, depending
on which is selected for control by the MAIN
RX and SUB RX buttons located between
the two large main tuning knobs. See (55)
MAIN RX and (56) SUB RX for information
on these buttons and their function.
Refer to the section of chapter 4 titled
"Optimal Uses of ORION Receiver for
Weak-Signal DXing and Contesting".for
565 manual
Part #74279
Printed in USA
more information on using DSP NR in weak
signal environments.

(25) NOTCH

ORION is equipped with a manual notch
filter at the IF level. Press the NOTCH
button to activate.
Both the center frequency of the notch and
the width of the notch filter are user-
adjustable.
When pressing the notch button, the center
frequency value with the C: annunciator will
appear. Example C: 500Hz would be a 500
Hz center frequency. The center frequency
is variable from 20 to 4080 Hz in 10, 50, or
100 Hz steps (adjustable in the menu using
the PBT/BW step size control).
While the C: value is shown, press the
NOTCH button again to change the display
to notch filter width. An annunciator marked
W: with the notch width value will be shown.
Example: W: 250Hz is a notch filter width of
250 Hz. Turn the MULTI knob to adjust the
width value.
Pressing the NOTCH button when the W:
value is shown will turn off the notch filter.
(26) AN
ORION is equipped with an automatic notch
filter for notching out carriers in voice
modes. Multiple carriers will be notched by
the automatic filter.
To activate, press the AN button. Higher
values indicate more aggressive action by
the autonotch for suppressing undesired
carriers.

(27) MODE

Pushing the MODE button allows selection
of the various operating modes for the
transceiver. Press the MODE button to
bring up the mode selection menu.
Along the right side of the screen in
descending order will be the available mode
selections. Each mode selection will
correspond to one of the buttons numbered
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