Re: Stupid RF newbie has a question...
From: Charles Schuler (charleschuler_at_comcast.net)
Date: 10/14/04
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Date: Wed, 13 Oct 2004 20:17:38 -0400
"Dave" <db5151@hotmail.com> wrote in message
news:ckk9bu$28c@library2.airnews.net...
>I am wanting to build a simple RF amplifier to boost the signal to my
> television, and then use the knowledge I gained in that project to build a
> second RF amplifier to boost and filter the signals I receive on my
> Shortwave radio (which I connect to a random-wire antenna up on the roof.)
> I have a background in electronics (with the exceptions listed earlier)
> and
> would like to keep on learning in this new direction. I do have a simple
> workshop set up (again, after 20 years) and am basically seeking to pick
> up
> the hobby again.
Wideband RF amplifiers are not a beginner's project. Not trying to
discourage you, but to cover 54 to 800 MHz with decent noise performance and
gain is not easy. If you want to boost one channel (or so) that's more
manageable. Short wave covers 2 to 30 MHz and many preamps are already out
there. By the way, the sensitivity of many modern receivers is such that
little can be gained (pun) with a preamplifier. Ramsey electronics might
have some kits. Nothing wrong with kits for a beginner. Also, you can
Google for some schematics.
Again, the ARRL handbook is a gem if you really want to learn RF.
Electronics can be a fun hobby. It's just not as easy as it once was to
come up with anything significant at home.
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