On 6 Feb, 20:55, "T" wrote:
i'm working on a science fair project. i'm building an am-radio
transmitter. i can only be a few inches from the receiver. how do i
solve this problem without making my antenna enormous.

If you build an amplifier at the initial recerving antenna which is
preferably
outside the house the signal within the coax leading to and within
the house
will be strong enought to overcome the losses entailed by using a
long
connecting coax. Placing the amplifier at the antenna prevents noise
from
overpowering the incomming signal The amplifier need only to be a
simple
transister driven by a battery. Remember that the signal to noise
ratio will
never be better than the signal recieved by your antenna before
amplification
which should provide the impetus to build the best antenna you can
build
and situated in the most desirable place for receiving..
Good luck
Art