Thank you Mike for your advise ciao iz3boa Francesco
----- Messaggio originale ----- Da: mikecol2 <[EMAIL PROTECTED]> A: [email protected] Inviato: Giovedì 12 giugno 2008, 19:53:36 Oggetto: [softrock40] Re: V8.3 Lite+Xtall kit now sold out > The speed of the FST3253 in the QSD circuit might be a problem above 10m but it would be worth a try. Hi Tony and Francesco, If you are going to swap to the ACT74 part, you should also consider shifting the capacitive coupled pull up/pull down threshold. AC parts are centered at 2.5V (for 5V VCC) whereas most ACT parts are centered at 1.5V for input threshold. I would change the 10K / 10K ( R11 /R12 ) to something like: 10K / 4.7K or so. 73, Mike Collins KF4BQ ___________________________________ Scopri il Blog di Yahoo! Mail: trucchi, novità , consigli... e la tua opinione! http://www.ymailblogit.com/blog/
