In-Circuit Tuning Adjustments
If you have a miniVNA device for your PC you can adjust the
filter in real-time for the best response curve. If you do not, you
can use the clock method of lead spacing and you should be
pretty close.
Note: You must attach 12V to J2 in order to use a
miniVNA. Observe polarity, pin 1 is +12V. You need power
because only the energized circuit does not have the input and
outputs grounded.
Consolidated Filter Response Where Y-axis = dB; X-axis = F
MHz
The Plot was acquired using a miniVNA sweeping 1 – 100
MHz. Data was captured to an Excel spread sheet and
graphed.
Selector Switch Stop Pins Installation
•
The switch includes a little package that has two stop
pins and a sticker. Your goal is to install the pins in the
correct holes without losing the stop pins.
•
Turn the shaft so the flat is on the right. Check ___
•
Insert the pins at 12 and 6 o’clock. Cover with sticker.
Install
‐60
‐50
‐40
‐30
‐20
‐10
0
10
0
50
100
150
F160 dB
F8075 dB
F6040 dB
F3020 dB
F1715 dB
F1210 dB
Содержание PackerAmp V4
Страница 65: ...APPENDIX A www hfprojects com vstamps comcast net 281 467 9424 ...
Страница 76: ......