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Shortwave with AM/FM IC - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.

Post subject: Shortwave with AM/FM IC Posted: Mon Aug 15, 2005 4:44 pm


Joined: Sat Apr 23, 2005 2:09 pm
Posts: 17
Location: Tampa, FL
Hello all,

I'm curious. Do you think this idea is feasible? I wanted to process SW signals using an AM/FM IC. I only want to demodulate amplitude modulated SW signals. I was thinking that if down-convert the SW frequency to AM levels, then I can just send the down-converted frequency to the IC.

Any tips would be greatly appreciate. Thanks!


Post subject: Use of Single-chip receiver as IFPosted: Tue Aug 16, 2005 5:48 pm
Absolutely you can do this - the amateur radio community has used this approach for years. The NE602 IC is a favorite in that community for the downconverter stage. Its only problem is its low 3rd order intercept - which means that it overloads more easily than one might like.

Good Luck!

Posted  11/12/2012
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