2 layers91.7 × 48.8 mmIf and log ampdmsmccann/Spectrum-AnalyzerBased on design by W7ZOI in 1998 QST75 parts2
2 layers63.5 × 43.2 mm2db divdmsmccann/Spectrum-AnalyzerBased on design by W7ZOI in 1998 QST30 parts2
2 layers72.4 × 49.5 mm2ndmixer-2ndlodmsmccann/Spectrum-AnalyzerBased on design by W7ZOI in 1998 QST61 parts2
2 layers91.7 × 48.8 mm6-22-if and log ampdmsmccann/Spectrum-AnalyzerBased on design by W7ZOI in 1998 QST59 parts2
2 layers75.2 × 90.4 mm15v supplydmsmccann/Spectrum-AnalyzerBased on design by W7ZOI in 1998 QST24 parts2
2 layers78.7 × 38.1 mm70mhz lpfdmsmccann/Spectrum-AnalyzerBased on design by W7ZOI in 1998 QST15 parts2
2 layers91.7 × 48.8 mmResolution filtersdmsmccann/Spectrum-AnalyzerBased on design by W7ZOI in 1998 QST61 parts2
2 layers85.3 × 76.5 mmTimebasedmsmccann/Spectrum-AnalyzerBased on design by W7ZOI in 1998 QST57 parts2
2 layers91.7 × 48.8 mmVco-1stmixerdmsmccann/Spectrum-AnalyzerBased on design by W7ZOI in 1998 QST50 parts2