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Am radio

gjyoung1974·am-radio

Am radio PCB layout, top view — open source board by gjyoung1974
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About the Am radio PCB

Am radio is an open source PCB design by gjyoung1974, published on GitHub. It is a 2-layer board measuring 110 × 83 mm, with 47 components from 31 distinct parts.

By type, the board carries 15 resistors, 13 capacitors, 6 transistors, 5 transformers, 2 inductors and 1 connector.

It belongs with the rf & radio and audio designs in this gallery.

From the project

am-radio

A classic 1960's style 455 kHz superheterodyne AM receiver, 4.5 V (3×AAA), negative ground, six 2N3904 NPN transistors:

- am-radio.kicadsch / am-radio.kicadpcb / am-radio.kicadpro — the project. - audio.kicadsym — custom symbols: Xicon 42IF10x IF transformer, 42IF110 oscillator coil, 42TU013 / 42TU200 audio transformers (6-pin, pin numbers match the footprint pads), 2-gang polyvaricon, ferrite rod coil, VRF power symbol. Your original IFTransformerAM symbol is kept for reference. - audio.pretty/ — footprints: Xicon42IF10x (0.4" can, 3+3 pins on 0.135" pitch, rows 0.27" apart, from Xicon…

Am radio bill of materials (BOM)

47 components, 31 distinct parts — part numbers from the project's BOM.

QtyPartRefs
6
2N3904
Q1, Q2, Q3, Q4, Q5, Q6
1
SPEAKER 8R
J1
1
3xAAA 4.5V
BT1
1
10k log
RV1
1
POWER
SW1
1
42IF101 (yellow)
T1
1
42IF102 (white)
T2
1
42IF103 (black)
T3
1
42TU013
T4
1
42TU200
T5
1
CBM-223P
VC1
1
1N34A
D1
1
AM loopstick
L1
1
42IF110 (red)
L2
3
10N
10n
C1, C7, C10
1
47N
47n
C2
2
10U
10u
C3, C8
3
47n
C4, C5, C6
3
100U
100u
C9, C12, C13
1
22N
22n
C11
Show 11 more
QtyPartRefs
1
100K
100k
R1
1
39K
39k
R2
2
1k
R3, R6
2
47K
47k
R4, R7
1
10K
10k
R5
1
15K
15k
R8
2
680
R9, R15
1
33K
33k
R11
1
12K
12k
R12
2
330
R13, R16
1
4K7
4k7
R14

Am radio design files

The KiCad project lives in the gjyoung1974/am-radio repository on GitHub; these links point at the commit this page was built from.

Am radio: common questions

How big is the Am radio PCB?

The Am radio measures 110 × 83 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Am radio?

47 components, from 31 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Am radio design files?

From the gjyoung1974/am-radio repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Am radio design in my own project?

The repository has no license, so all rights stay with gjyoung1974. Use it as a reference, and ask the author before reusing the design.

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