Ramsey Electronics FR146, User Manual

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FR146
•
7
ˆ 3 4.7 or 10 uF electrolytic (C15,30,36)
ˆ 4 100 to 220 uF electrolytic (C14,32,33,35)
Controls and Hardware
ˆ 1 Printed circuit board
ˆ 3 10K ohm potentiometer (R1,R2,R3)
ˆ 1 DPDT push switch (S1)
ˆ 1 PC mount RCA jack (J1)
ˆ 1 PC mount subminiature speaker jack (J2)
ˆ
1 9-volt battery bracket
ˆ 1 9-volt battery snap-on clip
REQUIRED, NOT SUPPLIED
ˆ 1 9-volt alkaline battery
ˆ 1 VHF antenna with cable terminated in RCA-style plug or adapter
ˆ
1 Speaker or headphones
NOTE CONCERNING THE AUDIO OUTPUT JACK
Your receiver kit is supplied with a standard subminiature 2.5 mm (3/32") audio
output jack, which mates with commonly available earphone plugs and
adapters available at Radio Shack, such as 274-290 (plug) or 274-327 (adapter
for 1/8" mono plug). If you prefer to use another size and style jack, we suggest
that you still install the original jack and then wire your own jack in parallel with
it rather to rough up the PC board to accommodate your jack.
SEMICONDUCTOR REPLACEMENT DATA
U1 SA602 (Signetics) Contact Ramsey Factory
U2 MC3359 (Motorola) ECG860 or SK7731
U3 LM386 (National) available at Radio Shack, other suppliers
Q1 2SC2498 ECG10 or SK9139
Q2,3 2N3904 available at Radio Shack, other suppliers
D1 BB505 contact Ramsey Factory
D2 1N4148 available at Radio Shack, other suppliers