LOCAL OPERATION
WJ-8711A DIGITAL HF RECEIVER
3-10
The +/- ZERO key is also used to enable the Tunable Notch Filter when the selected detection
mode is other than CW (i.e., AM or FM). This key provides three functions to alter the Tunable Notch Filter.
These functions are listed below:
•
When pressed while the Tunable Notch Filter is in the OFF mode, it changes
the mode to allow the tunable notch to be positioned greater than (>) the
tunable carrier frequency.
•
When pressed again, the Tunable Notch Filter can be positioned below (<) the
tuned carrier frequency.
•
When pressed again the Tunable Notch Filter is disabled and OFF is
displayed.
3.2.17
THE BLANKER KEY AND LED
The BLANKER key is located below the upper display of the Auxiliary Parameter section.
This key is used to enable the entry of the noise blanker parameter for the receiver. The noise blanker
parameter can be any value from 1 to 10 or can be set to off. The following are guidelines to remember when
using the BLANKER key.
•
The noise blanker entry mode is enabled when the BLANKER key LED is lit.
The current noise blanker parameter is displayed in the far right area of the
upper display in the Auxiliary Parameter section.
•
When the noise blanker entry mode is enabled and the noise blanker
parameter is a numeric value (not off), the 1's digit is highlighted to indicate
resolution.
•
Pressing the BLANKER key while a numeric noise blanker value is displayed
causes " - -" to be displayed, meaning the noise blanker is off.
•
Pressing the BLANKER key while " - -" is displayed causes the last recent
numeric noise blanker value to be displayed.
•
The BLANKER key is used as the numeric entry terminator when using the
numeric entry keys to enter the noise blanker value.
•
The higher the noise blanker value, the more the noise blanking is applied.
The noise blanker entry mode can be exited by pressing any other Auxiliary Parameter key.
3.2.18
THE SPECIAL FUNCTION KEY AND LED
The SPECIAL FUNCTION key is located below the edit knob in the Auxiliary Parameter
section. This key provides several functions as listed below:
•
Selects the Passband Tuning mode (if in CW detection mode),
•
Selects the BITE Initialization mode,
Courtesy of http://BlackRadios.terryo.org
Summary of Contents for WJ-8711A
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