I4FAF HOMEBREW GALLERY
|HF TRX - ham bands only||HF TRX with gen.cov. RX||SRC Front-End||SRC01 Front-End|
|with 28/144 MHz transvert||synthesized, 1 IF upconv.||pb filters simplified||pb filters Butterworth, pream|
|SRC02 Front-end||RX IF AGC high gain|
|Cauer pbf, preampl.,var att.||Butterworth and Cauer vers.||our try about W7AAZ design|
|HF really Lin.Amplifi|
|with Mosfets vs. Transistors||with Tetrode Tubes|
awarded with this nice
CERTIFICATE CLICK HERE
issued by ARI that states more than 50 years ARI membership
(oltre 50 anni membro Associazione Radioamatori Italiani).
|I4FAF home made
laboratory instruments, useful tools
for many amateur radio home brew projects entertainment.
|Our bench-work (CAUER FILTER on the bench for optimisation)|
Analyser 1 to 600 MHz with tracking RF gen. (1996)
see note 4 under my article for project references in
AMPL-DETECT LOG 80dB DINAMICA
|Home built HF wattmeter, synthesized RF gen 4 to 520 MHz (1989)|
| Two 1 to
50 Vdc, 5 Amp. regulated power supply (1996),
main regulator is from a QST article.