ray:
All my amateur radio studying was done a long, long time ago so I am
unfamiliar with practice materials available these days. Might I
suggest, however, that you formulate your own problems and solve them?
You'll learn a lot that way. A simple example: anytime someone
mentions transmitting on a certain frequency, calculate the wavelength
in meters; do the same if a wavelength is given (though you'll find that
the wavelengths given for ham bands are only *very* approximate). Also,
just drill yourself on the various prefixes, e.g., if I have a resistor
of a thousand ohms, how many megohms is it? Or -- and this is a
real-world example --if my ancient tube-type TransOceanic draws a
filament current of 50 miliamperes thru the series filament string which
is across 9 volts, how much power am I consuming?
Your imagination is the limit.
As to the T antenna on your stereo, it's most probably an antenna for
the FM broadcast band. At this frequency, grounding your stereo won't
make a lot of difference. However, putting your antenna outside with a
longer run of 300-ohm twin-lead (that's the impedance of your antenna
and what your stereo is used to) *will* make an improvement.
73!
Mike Freeman <[log in to unmask]>
Amateur Radio: K 7 U I J
... Pushing 40 is exercise enough!
----- Original Message -----
From: "RiverWind" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, May 11, 2001 8:47 PM
Subject: Antena and practice programs
> Hi All,
>
> I've a couple of questions here if I may. I am getting ready to
> take my novice and tech exams in June, and I am using the Handy-Ham
> publication, Now You're Talking. It is a very involved book, with
> tons of questions, and I am learning a lot. Well, I finished
> chapters five and six today, and I feel that I need a deal of
> practice when it comes to calculating hertz, olmes, Faras,
> Henrys,volts, wats frequencies and such like. Those two chapters
> were all about the different entities that must be measured, and I
> would like to get in a lot of practice, not just for the exams, but
> for my own general use. Might there be any programs for dos, or
> formula books that any of you know of? If so, I'd appreciate some
> direction.
>
> I have a stereo, that came with a large T shaped antenna that
> screws into the back. I wish to run it out the window and ground
> it, so as to get the maximum performance from this antenna. How
> would you go about setting such an antenna up? It is a long T
> shaped wire.
>
> Thanks so much in advance,
> Ray
>
>
>
> <LI><a href="http://www.shellworld.net/~riverwind">Click here to
> enter the pagan/ mystical library.</a>
>
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