Ramsey Electronics FX-440 Manual page 55

PART VALUE
or
ID
STEP NOTE:
L11
I l I l
.04 uH TX6
L12
1.S turn
y, •
dia.
DR3 low pass with C71, C72
L13 .ST,
y,"
dia. TX26
L14
! I ! I
1.S turn TX22
L1S printed on PC board TX19
L16.
l l l I
printed on PC board TX16
L17 2.2 uH DR7
L18
.01S uH with ferrite bead
TX20
L19
[ l [ l
.01S uH with ferrite bead
TX1S See stage "TC" for winding
L20
soo
uH choke A4 Ignition hash filter
L21
1111
.04 UH F1S
L22
2.2 UH DR11
L23 .01S uH DRS
L24
[ 1 [ 1
.01S UH DR4
T1
I 1 I I
6T/2T toroid CR34 VCO injection to U 1
Q: TRANSISTORS (All types)
01
I l 11
2N3904 NPN CR31
Receiver 1st IF amp
02 NE021 NPN RF DR34 Receiver RF preamp #2
03
NE021 NPN RF
DR23 Receiver RF preamp #1
04
[ l [ l
2N3904 NPN
E19 VCO DC input filter
OS not used
06
1111
2N3904 NPN 89 Carrier detect switch
07
NE021 NPN RF E8
vco
08 SD1444 or MRF630 TX2 Transmit final amplifier
09
[ 1 [ 1
MRSS9 NPN RF TX1 Transmit driver
010
I 1 I I
2SC2S70 TX14 Transmit buffer
011
!
l
!
I
2N3904
M18 Grounds mic amp during receive
012 PNP 2N3906 (228256) M20
PTI switching
013
PNP 2N3906 (2282S6) M21
+BR PTI output
014
111 l
PNP 2N3906 (228256) M22
+BT PTI output
015
2N3904
H10 Offset matrix switching
016
2SC2S70 F12 VCO buffer
017
I 1 I I NE021
DR36
R: RESISTORS (Fixed, Trimmers and Panel-Mounted
Controls):
R1
I I I I
47K
CR29
R2
11 l l
470 CR28
R3 1K CR7
R4 33K CR4
RS
I 1 I I
10K
CR3
R6
I I I 1
220K CR26 Sets hysterisis for U 1
R7
I l I l
10K pot w/switch A2,B12 Volume
R8
10K CR27
R9 4.3 or 4.7 meg CR6
R10
I 1 I 1
270
DR33
R11
I I I I
10K CR2
R12
1111
100 DR22
· R13
100K pot CR33
Squelch control
R14 47K DR32
R1S
I I I 1
1K E16
R16
I 1 I I 47K
DR20
-R17 I I I 1 270
DR21
FX-440
Ref. 53