QEX March/April 2003 issue Article Title:
"A High-Level Accessory Front End for the HF Amateur Bands" (pages 45 to
56)
(by Sergio Cartoceti, IK4AUY, 2003)
Further Info, Photos,
Performances Data, 9 band BCD autoswitch and
QEX Article Errata Corrige (click on the green links below)
Come back again to check for updates
| Photos FROM
HOMEBREW GALLERY by I4FAF about earlier versions. The final version presented in QEX is named SRC-02. |
| SRC Front-End | SRC01 Front-End | SRC02 Front-end |
| (pb filters simplified) | (pb filters Butterworth, preampl) | (Cauer pbf, preampl.,var att.) |
| Where to find parts HELP | 9 band Autobandswitch BCD data | |
| (Butterworth and Cauer vers) | (relays,pin diodes,transistor,caps) | (circuit and board .zip file,3 .pdf files) |
| Preampl. Performances data | QEX March/April 2003 article Errata Corrige | Our project overview by IV3DDM with band by band spectrum analyser - tracking generator pb filter curves |
|
Down load here
performance tests by Eraldo I4SBX an excel file with Cauer filter passband curves and IMD-IP3 data (new) |
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| More circuit board templates about QEX March/April 2003 article project are available, they are many and if really interested inquiry for a CD with cost coverage. |
Last update: March 12, 2008