HELP AND ADVICE on a Wide Band 1.8-30 mhz Preamps

[Glen Zook]

Unfortunately, a preamplifier on HF is going to
amplify the noise just as much as the signal.  Except
for some of the really "low end" and some of the
pre-1950 receivers when operating higher than 10 MHz
to 15 MHz, a preamplifier is not really going to do
much good because the noise on the band is usually
considerably above the actual minimum sensitivity of
the receiver.

Now if you have one of the 3-terminal type receivers
(two antenna connections and a ground) in which you
tie one of the "A" terminals to "G" for use with coax
you probably will have better luck by just adding a
balun.  A television type balun usually works fine for
this.

Go to

http://k9sth.com/Page_2.html

and then scroll down about half-way in the list of
links to "using television baluns to improve receiver
sensitivity".  This is the article that was in
Electric Radio a while back.

Glen, K9STH


--- Chris <boatanchors at PEOPLEPC.COM> wrote:

My question is about Wide Band Preamps for 1.8-30
MHz...I have tried the Ameco PT-2 and to be honest all
it does is just increase the noise over the signal, I
want to get a good preamp to use but want something
that is not going to just increase the noise which in
the long run just covers up the signal you are wanting
to listen to, Can any one help with tips or advice on
a good preamp that wont break the bank that would be
worth while that has a low noise figure but good
signal gain...









Glen, K9STH

Website:  http://k9sth.com


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