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( ,1<
li·(·DR23c. After making sure that the body of 03 is snugly against
the PC board and correctly oriented as shown, solder and
trim all three wires. That's all there is to it!
[ .1·
[""f''~DR24.
Install C20, 2 pf.
L/f [ ~r/bR25.
Install C30, 2 pf.
[ lf
[v(DR26. Install L5, .015 uH, a small 2-turn
pre-wo~nd
wire coil.
[A [ ..,f
DR27. Install C28, 2 pf.
[/J
["jJ'DR28. Install L2, .015 uH, like in step DR25 above.
I•]
l\sJ·'''DR29. Install L6, another 2-turn .015 uH coil.
LI
lvf )~R30. Install C31, 3.9 pf.
(.e]
[vf
DR31. Install C22, 10 pf.
[ /j I
~H32.
Install R14, 47K (yellow-violet-orange).
[ .ii [
'\J/
DR33. Install R10, 270 ohms (red-violet-brown).
[ ,f ["f/~R34.
Select another NE021 NPN RF transistor, the same as in
~P
DR23. Using the same technique as before, install 02.
[·' ] 1\1"
DR35. Install C17, 27 pf.
[ /I
1~,f
DR36. Select another N E021 transistor, install it in the 017
position.
[ '] [ L.] DR37. Install C78, 27 pf.
( J
(\..(9R38.
Install R45, 270 ohms (red-violet-brown).
I ,]
[t('DR39. Install R66, 47K (yellow-violet-orange).
[ .·] (/) DR40. Install C79, 100 pf.
Stage DR Progress and Testing Note:
f
1. Turn both volume and squelch controls fully CCW.
] 2. Connect DC voltage and speaker.
[ ·1
3. As you advance the volume control clockwise, you
should hear typical VHF radio background noise.
I ·]'
1
'4.
As you turn the squelch control clockwise, the noise should cut out
completely at a specific point in the rotation.
FX-440
Assm. 33
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