You would be "better served" by looking at the ARRL* amateur handbooks if
they are available to you (library or). They cover the relevant theory and
many practical aspects. Those circuits MAY work for you but you would be
largely "on your own" when trying to use them together or extend them or.
Even asking many people many endless questions about them would be likely to
be far less valuable than 'tapping in' to a quality source.

* ARRL: American Radio Relay League.
http://www.arrl.org/

Also RSGB
http://www.rsgb.org/

You can probably obtain 'results of a sort' the way you are going but
overall you are so far outside your comfort, knowledge or experience zone
that starting with as solid a technical foundation as possible is strongly
advised. Trying to utilise semi random minimally documented, naively
described circuits from the internet is liable to cause you even more pain
than necessary.


                 Russell


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