HAMTRONICS R100, Assembly, Installation, & Maintenance

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©1995 Hamtronics, Inc.; Hilton NY; USA. All rights reserved. Hamtronics is a registered trademark. Revised: 10/23/02 -Page 11-
PARTS LIST FOR R100
RECEIVER, FOR 46-54 MHZ
Ref # Value (marking)
C1 82 pf np0
C2 150 pf np0 (151)
C3-C4 .001 uf (102, 1nM, or 1nK)
C5 56 pf np0
C6 1 pf
C7 62 pf np0
C8 1 pf
C9 56 pf np0
C10 6 pf np0
C11 .01 uf (103)
C12 5 pf
C13 6 pf
C14 5 pf
C15 Piston trimmer, 2-11.2 pf
C16 39 pf np0
C17-C18 150 pf (151)
C19
.001 uf (102, 1nM, or 1nK)
C20 82 pf np0
C21 2 pf
C22 82 pf np0
C23 not used
C24 .001 uf (102, 1nM, or 1nK)
C25 82 pf np0
C26 2 pf
C27 82 pf np0
C28 0.47 uf electrolytic
C29 0.15 uf polyester (red)
C30-C31 .001 uf (102, 1nM, or 1nK)
C32-C33 .01 uf (103)
C34
0.15 uf polyester (red)
C35 4.7 uf electrolytic
C36 47 uf electrolytic
C37 0.15 uf polyester (red)
C38 470 uf electrolytic
C39 68 pf np0
C40 220 pf (221)
C41-C43 0.1 uf monolithic (104)
C44
2 pf
CR1-CR2 1N4148 ( p/n may not be
marked)
FL1-FL4 10.7 MHz matched xtal
filter set
FL5 455 kHz ceramic filter,
20 kHz bw (blue)
J1 RCA jack
L1-L4 6½ tunrs (blue)
L5 10.7 MHz IF transformer,
p/n 7A-691F
L6-L9 6½ turns (blue)
L10 455kHz IF transformer
p/n 831-5 or YMC-15002
or T1003
Q1-Q2 N.E.C. 3SK122 or Philips
BF-988 dual-gate mos fet
(
M
static handling pre-
cautions required)
Q3 2N3563 or 2N5770
Q4 not used
Q5 2N3563 or 2N5770
R1-R3 100K
R4-R5 15K
R6 680
Ω
R7 not used
R8 47K
R9 68K
R10 100K panel-mount pot.
R11 68K
R12 100K
R13 47K
R14 330K
R15 680
Ω
R16 4.7K
R17 1.2K
R18 22K
R19 100K
R20 100K panel-mount pot.
R21 47K
R22 3.3
Ω
(orn-orn-gold-gold)
R23 15K
U1 MC-3361P IF Ampl/
Det/Squelch
U2 LM380N-8 Audio Amplifier
U3 78L08 Voltage Regulator
Y1 Channel Crystal (see text)
Y2 10.245 MHz, 62 pf,
parallel-resonant IF xtal
Z1-Z4 Ferrite Beads, double long
à
Note the following
changes for this model:
1. R7 and C23 are not used. Q4 is re-
placed with C44, installed where the
base and collector leads of Q4 would
normally go.
(See detail below.)
2. When tuning the oscillator, a change
in procedure is required because this
frequency scheme does not use a mul-
tiplier stage. L6-L9 are all simply
peaked for maximum signal sensitivity.
Skip alignment procedure step (c). In
step (g), alternately peak all four coils,
L6-L9, for maximum as stated for L8-L9.
Q2
Q3
C27
C26
C10
R3
L9
L5
Z2
Z3
C25
C24
R5
C20
C21
C22
L6
L7
C43
L8
C19
THESE 5 HOLES
C44 INSTALLED
NOT USED
IN PLACE OF Q4
BASE-COLLECTOR
DETAIL OF LEFT-REAR CORNER OF RECEIVER
SHOWING COMPONENT CHANGES FOR THIS MODEL