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W7ZOI Spectrum Analyzer

dmsmccann·Spectrum-Analyzer·hierarchical-schematic/W7ZOI Spectrum Analyzer.kicad_pcb

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About the W7ZOI Spectrum Analyzer PCB

W7ZOI Spectrum Analyzer is an open source PCB design by dmsmccann, published on GitHub. It is a 2-layer board, with 431 components from 186 distinct parts.

Other key parts include the POS-200, MAV-11, TUF-1H+, ADE-1HW+ and AD603AQ. By type, the board carries 133 resistors, 132 capacitors, 40 test points, 35 connectors, 22 inductors and 17 ICs.

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 W7ZOI Spectrum Analyzer

POS-200MAV-11TUF-1H+ADE-1HW+AD603AQL78L05_TO92LM317L_TO92${SIM.PARAMS}CA3140LM358PLM358LM7815LM7915MC1458P

W7ZOI Spectrum Analyzer bill of materials (BOM)

431 components, 186 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
POS-200
U101
3
MAV-11
U102, U103, U201
1
TUF-1H+
U104
1
ADE-1HW+
U202
1
AD603AQ
U301
1
L78L05_TO92
U302
1
LM317L_TO92
U303
1
${SIM.PARAMS}
U304
1
CA3140
U305
1
LM358P
LM358
U401
2
LM358
U402, U403
1
LM7815
U901
1
LM7915
U902
1
MC1458P
U1001
2
2N5179
Q201, Q202
1
2N3904
Q301
1
100MHz
Y201
8
10.7MHz
Y501, Y502, Y503, Y504, Y1202, Y1203, Y1204, Y1205
1
VCO Control In
J101
1
1st IF Out
J102
Show 166 more
QtyPartRefs
1
VCO Sample
J103
1
RF In
J104
5
Conn_01x02
J105, J201, J306, J1001, J1003
2
110 MHz In
J202, J203
1
2nd IF Out
J204
1
Coax
J301
3
SMA Panel Mount
J302, J303, J304
1
Conn_01x03
J305
5
Conn_Coaxial
J307, J501, J502, J1204, J1206
1
Out to Scope X
J401
1
691137710002
Timebase Out
J402
2
Terminal Block
J503, J1205
1
In
J601
1
Out
J602
1
In
J701
1
${SIM.PARAMS}
J702
2
Terminal Block
J901, J902
1
Conn_Receptacle_3P_Protected
J999
1
From R2
J1002
1
Out
J1004
1
0.5A
F901
1
Jumper
JP101
1
5025
JP201
4
G5V-1
K501, K502, K1201, K1202
1
Oscilloscope
MES1
1
10k
RV301
1
100
RV302
2
SW_SPST
SW501, SW1201
1
0
SW901
1
${SIM.PARAMS}
SW1001
1
Video
SW1002
1
Bifilar_Transformer
T201
1
FT37-43 8:2 t
T301
4
Transformer_1P_1S
T501, T502, T1202, T1203
1
XFORMER
T901
16
${SIM.PARAMS}
TP101, TP102, TP103, TP104, TP105, TP106, TP301, TP302 +8
1
Q-Base1
TP201
1
+15
TP202
1
Q-Coll1
TP203
1
Q-Emit1
TP204
1
6db Pad In
TP205
1
6db Pad Out
TP206
1
MAV-In
TP207
1
MAV-Out
TP208
1
ADE-Out
TP209
1
Q-Base2
TP210
1
Q-Coll2
TP211
1
Q-Emit2
TP212
12
${SIM.PARAMS}
TP501, TP502, TP503, TP504, TP505, TP506, TP1213, TP1214 +4
1
VSIN
V1
10
1N4148
D301, D402, D404, D405, D407, D501, D502, D1001 +2
1
1N4148
D401
1
1N4735A
1N4735
D403
1
1N4735
D406
4
1n5060
D901, D902, D903, D904
2
.3u
L101, L102
1
40n
L201
1
420n
L202
2
1u
L203, L204
1
1.05u
L301
8
1.15u
L501, L502, L503, L504, L1205, L1206, L1207, L1208
3
300n
L601, L602, L603
2
150n
L701, L704
2
180n
L702, L703
6
.01u
C101, C107, C209, C210, C211, C308
19
.1u
C102, C212, C213, C214, C301, C302, C307, C309 +11
1
100u
C103
6
.001u
C104, C105, C106, C108, C109, C110
2
470p
C201, C202
2
33p
C203, C204
1
15p
C205
1
82p
C206
5
120p
C208, C502, C515, C1216, C1239
3
1n
C298, C325, C326
1
BFC280831659
12p-60p
C299
3
5n
C303, C304, C305
3
100u
C306, C1001, C1002
1
.22u
C312
1
18p
C313
1
22u
C315
6
5.6p
C316, C319, C505, C511, C1223, C1232
1
12-60p
C317
1
180p
C318
1
.001u
C323
1
CK06BX105K
1u
C401
1
226CKH050M
100u
C402
1
22u
C403
1
107CKE025MEM
22u
C404
2
100u
C405, C406
4
56p
C501, C514, C1217, C1238
8
12p-60p
C503, C506, C509, C512, C1219, C1225, C1229, C1234
4
100p
C504, C513, C1222, C1235
4
150p
C507, C510, C1226, C1231
2
3.3p
C508, C1228
12
1.8p-10p
C518, C519, C520, C521, C522, C523, C1221, C1224 +4
2
5n
C524, C1218
2
100p
C601, C607
3
1p-10p
C602, C604, C606
2
.092p
C603, C605
2
47p
C701, C705
3
82p
C702, C703, C704
1
0.22u
C901
4
6800u
C902, C903, C910, C911
2
6.8u
C904, C905
4
0.01u
C906, C907, C908, C909
1
.1u
C1003
1
3.3u
C1004
1
10k
R2
1
R_Potentiometer_US
R2-1
11
150
R101, R102, R104, R106, R110, R206, R208, R502 +3
5
36
R103, R108, R207, R501, R1219
2
1.5k
R105, R321
7
220
R107, R109, R114, R116, R210, R211, R320
1
33
R111
3
22
R112, R432, R433
3
47
R113, R209, R303
3
470
R115, R306, R425
4
2k
R201, R203-1, R213, R301
1
39
R202
1
3.3k
R203
2
510
R204, R311
6
100
R205, R304, R305, R309, R430, R431
4
51
R212, R313, R325, R406
1
390
R214
2
27
R215, R217
1
5.1
R216
5
10k
R302, R419, R423, R426, R1007
8
2.2k
R307, R308, R314, R326, R410, R418, R510, R1223
2
680
R310, R324
4
1k
R312, R319, R327, R1013
1
5.6k
R315
1
4.3k
R316
4
10
R317, R318, R322, R323
1
CFR-25JB-52-56K
10k
R401
1
CFR-25JT-52-680K
10k
R402
1
CFR-25JB-52-100R
5k
R403
1
10k
R404
1
CFR-25JB-52-2K2
56k
R405
1
CFR-25JB-52-4K7
10k
R407
1
CFR-25JB-52-1K
680k
R408
1
240k
R409
1
CFR-25JB-52-12K
10k
R411
1
CFR-25JB-52-15K
2.2k
R412
1
CFR-25JB-52-10K
5k
R413
1
12k
R414
1
4.7k
R415
1
CFR-25JT-52-390R
6.8k
R416
1
CFR-25JB-52-51R
10k
R417
1
3296W-1-502RLF
5k
R420
1
CFR-25JB-52-6K8
1k
R421
1
CFR-25JB-52-240K
15k
R422
1
15k
R424
1
CFR-25JB-52-22R
2.2k
R427
1
CFR-25JB-52-22R
15k
R428
1
CFR-25JB-52-470R
390
R429
4
270
R504, R505, R1221, R1225
4
10M
R506, R508, R1226, R1228
2
0
R507, R1227
4
9.1k
R509, R511, R1222, R1224
2
2.2k
R901, R902
2
43
R1001, R1002
4
20k
R1003, R1004, R1008, R1009
1
40k
R1005
2
10k
R1006, R1012
1
249k
R1010
1
4.99k
R1011

W7ZOI Spectrum Analyzer 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.

W7ZOI Spectrum Analyzer: common questions

How big is the W7ZOI Spectrum Analyzer PCB?

The W7ZOI Spectrum Analyzer has 2 copper layers and is 1.6 mm thick.

How many components are on the W7ZOI Spectrum Analyzer?

431 components, from 186 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 W7ZOI Spectrum Analyzer 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 W7ZOI Spectrum Analyzer 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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