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Spectrum Analyzer: IF and Log Amp

dmsmccann·Spectrum-Analyzer·if-and-log-amp/if-and-log-amp/if-and-log-amp.kicad_pcb

Spectrum Analyzer: IF and Log Amp PCB layout, top view — open source board by dmsmccann
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About the Spectrum Analyzer: IF and Log Amp PCB

Spectrum Analyzer: IF and Log Amp is an open source PCB design by dmsmccann, published on GitHub. It is a 2-layer board measuring 91.7 × 48.8 mm, with 62 components from 39 distinct parts.

Other key parts include the AD603AQ, AD8307, CA3140, LM317L_TO92 and L78L05_TO92. By type, the board carries 28 resistors, 21 capacitors, 5 ICs, 4 connectors, 1 transistor and 1 transformer.

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

From the project

Based on design by W7ZOI in 1998 QST

This repository contains a complete KiCad implementation of the famous W7ZOI Spectrum Analyzer design, originally published in QST magazine. The W7ZOI spectrum analyzer is a well-regarded amateur radio test instrument design that provides a cost-effective solution for RF spectrum analysis.

The W7ZOI Spectrum Analyzer is a superheterodyne spectrum analyzer designed for amateur radio applications. It provides frequency analysis capabilities across the HF and VHF bands, making it an invaluable tool for antenna analysis, filter characterization, and general RF measurements.

Main components on the Spectrum Analyzer: IF and Log Amp

AD603AQAD8307CA3140LM317L_TO92L78L05_TO92

Spectrum Analyzer: IF and Log Amp bill of materials (BOM)

62 components, 39 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AD603AQ
U301
1
AD8307
U302
1
CA3140
U303
1
LM317L_TO92
U304
1
L78L05_TO92
U305
1
2N3904
Q301
1
Coax
J301
1
Conn_Coaxial
J302
1
+15 In
J303
1
Conn_01x03
J304
1
FT37-43 8:2 t
T301
1
1N4148
D301
1
1.05u
L301
11
.1u
C301, C302, C303, C306, C307, C308, C310, C316 +3
1
.01u
C304
1
100u
C305
1
18p
C309
1
22u
C311
2
5.6p
C312, C322
1
5-65pf
C313
Show 19 more
QtyPartRefs
1
220p
C314
1
.22u
C319
1
.001u
C320
1
47
R301
1
470
R302
1
2k
R303
1
10k
R304
3
100
R305, R306, R307
4
2.2k
R308, R309, R314, R326
2
51
R310, R324
2
680
R311, R325
1
510
R312
3
1k
R313, R317, R327
1
5.6k
R315
1
4.3k
R316
4
10
R318, R322, R323, R328
1
220
R319
1
1.5k
R320
1
82
R321

Spectrum Analyzer: IF and Log Amp design files

The KiCad project lives in the dmsmccann/Spectrum-Analyzer repository on GitHub; these links point at the commit this page was built from.

Spectrum Analyzer: IF and Log Amp: common questions

How big is the Spectrum Analyzer: IF and Log Amp PCB?

The Spectrum Analyzer: IF and Log Amp measures 91.7 × 48.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Spectrum Analyzer: IF and Log Amp?

62 components, from 39 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 Spectrum Analyzer: IF and Log Amp design files?

From the dmsmccann/Spectrum-Analyzer 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 Spectrum Analyzer: IF and Log Amp design in my own project?

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

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