Ramsey Electronics FX-440 Manual page 86

Install these following resistors:
/
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CR26. R6, 220K (red-red-yellow).
#,,.
[ ] [ \l
CB27. RS and R118, both 1 OK (brown-black-orange).
p"'"
[ ]
[vfJC~R28.
R2, 470 ohms (yellow-violet-brown).
[ ] [ ,j
CR29. R1, 47K (yellow-violet-orange).
/
[ ] [
~/CR30.
R41, 270 ohms, (red-violet-brown).
[ ] [\,,/ CR31. Install 01, NPN type 2N3904. Before soldering, press the
transistor as far into its holes as possible, with the flat side
~iented
as illustrated.
[ ] [ / CR32. Install FL1, the 21.4 MHz IF filter. Its 3 wires may be
inserted either way; make sure its body is snug against the top of
the tmard before soldering.
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[ ] [ kCR33a Prepare two 9" lengths of hookup wire for connecting
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R13, the 1 OOK Squelch Control. Strip back 1/4" of each end except
for one end, which should be stripped back
1
12". Tin all ends.
cw
[ -(--wJ0
- L
SQUELCH
cw w
R13
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Select the wire with the V2" stripped and tinned wire end.
Connect the
1
12" stripped end to the middle lug of the control,
... · "W"; with the extra V2" of bare wire terminated at the "CCW" lug.
[ 1 • ]
Select the other wire with the 1/4 • stripped ends. Connect one
./end to the remaining lug on the control, "CW".
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Notice the two points on the board between C7 and C16
· marked CW (which means ·clockwise") and W (wiper). Connect
the wire that connects to
·cw·
lug, to the "CW" hole and the
remaining wire to the "W" hole.
[ ] [ ] CR34a COMPLETING AND INSTALLING T1.
Your kit includes a small doughnut-shaped "toroid" coil and also a
short length of enameled wire. Notice the PC board location and
drawing for this coil and that the section with 3 connections is
pre-wound.
Assm. 26 FX-440