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Aviation Scanner

Portable scanner with USB interface

Aviation Scanner
For aircraft enthusiasts and in particular plane spotters, it’s always interesting to listen to communications between aircraft and control towers. This receiver makes it easy to listen to all traffic in the civil aviation band. It is easy to build, has only one hardware adjustment, and can even be controlled from a PC with a USB port.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Components
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The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.
COMPONENT LIST
Resistors
(shape: SMD 0805)
R1 = 150kOhm
R2,R6,R10 = 220Ohm
R3 = 820Ohm
R4,R5,R8 = 47kOhm
R7 = 100kOhm
R9 = 12kOhm
R11 = 120kOhm
R12 = 330Ohm
R14,R15 = 1kOhm
P1 = 100kOhm potentiometer, linear
P2 = 50kOhm potentiometer, logarithmic
Capacitors
(default shape: SMD 0805)
C1,C4–C9,C11,C12,C15,C16,C18,C21,C31,C32,C33,C39,C41,C48 = 100nF
C2,C3,C29 = 10µF 35V radial
C10 = 2.2µF 63V radial
C14,C42,C44,C45,C47 = 22pF
C17 = 4.7nF
C19,C20 = 2.2nF
C22 = 220µF 16V radial
C23,C24,C40 = 10pF
C25,C28,C30 = 100pF
C26,C38 = 1nF
C27 = 220pF
C34 = 10nF
C35 = 47µF 16V radial
C36 = 47nF
C37 = 12pF
C43,C46 = 56pF
C13 = 8.5pF – 40pF trimmer (Murata TZB4P400AB10R00)
Inductors
L1,L5 = 10nH (SMD 0805)
L2 = 56µH
L3 = 4 turns 18 AWG silver plated, length = 8mm, inner diam. 7mm
L4 = 3.3µH (SMD 0805)
Semiconductors
D1 = 1N4001
D2 = BB207 (TO236)
D3,D4 = LED, low-current, 3mm
T1 = BS170F (SOT23)
T2,T3 = BFR92A (SOT23)
IC1,IC5 = 78L05
IC2 = ATMEGA88-20PU, programmed, Elektor # 100969-41
IC3 = LM317 (SOIC-8)
IC4 = MAX5201AEUB+
IC6 = 74AC4040 (SOIC-16)
IC7 = SA615D (SOIC-20)
IC8 = LM386 (DIL-8)
Miscellaneous
X1 = 20MHz quartz crystal
X2–X5 = 27MHz quartz crystal, fundamental resonance, (e.g. Citizen CS1027.000MABJ-UT)
USB-FT232R “BOB” breakout board, Elektor # 110553-91 [1]
S1,S2,S3 = 6mm pushbutton (Multicomp MC32830)
2 pcs 2-pin pinheader
28-pin DIL socket for IC2
8-pin DIL socket for IC8
2 pcs 10-pin SIL socket, 0.1’’ pitch (for USB-FT232R “BOB” breakout board)
Miniature loudspeaker, 4 or 8 Ohm
PCB # 100696-1

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