MFJ-784B Instruction Manual
Advanced Features Error! Main Document Only.-6
Examples: (This is an hypothetical example.)
Suppose you forget what is stored in memory filter 3. To find out what is
stored there, position the controls as follows:
Control Position Meaning
Memory button: in select memory filters
Filters switch: 3 (2BP) memory filter 3
Manual Notch button: out manual notch off
Auto Notch button: in auto notch on
Noise Reduction control: midrange reduction level 5
Noise Reduction button: in noise reduction on
Assume the Auto Notch aggressiveness is jumper-set to level 3
Release the DSP button "out". Momentarily press the Program button. The
MFJ-784B would send the following Morse Code message:
BP CF 1025 BW 350 AN 3 NR 5
This means in memory position 3 you saved a band-pass filter with a bandwidth
of 350 Hz and center frequency of 1025 Hz. The unit also sent the current
settings for notch and noise reduction. Now suppose you try memory filter 6.
Turn the Filters switch to 6 (RTTY).
Press the Program button and the MFJ-784B sends:
RTTY CF 1360 BW 279 NR 5
In this position, you have saved a jumper-programmed RTTY filter with the
center frequency of 1360 Hz and a bandwidth of 279 Hz. These are the
settings for European RTTY. Notice that nothing sent for auto notch because
it is disabled in the RTTY filter.
These are examples of the individual filter settings:
LR/HR
•
Low-Reject/High-Reject (LR < HR):
LRHR 2000=3400
•
Band-stop filter (LR > HR):
LRHR 0=1400 2200=3900
•
All-pass filter (LR = HR):
LRHR 0=3900
BP
•
Normal filter:
BP CF 1500 BW 2100
•
Limited filter:*
BP CF 675 BW 1350
To Next Page
Loading...
