"Bill" wrote in message
. ..
Hello everyone I am looking for detailed plans for an AM loop. I will
be using it only for one frequency 1370AM so I dont want any tuners just a
simple AM Loop antenna for my AM radio. I will have to solder a 1/8 plug
to
a 6-8 ft feedline to connect to my radio. It is a Kaito portable model
1103. I want to built this AM Loop cause I listen to talk radio alot and
the static and other distant stations sometimes make it hard. I have done
alot of looking around on google searches but have found no real detailed
plans I am not sure if I should go with edge wound or Spiral wound. Any
info you guys can give especially a detailed plan would be greatly
appreciated. or maybe there is a website I may not have seen you would
like
to suggest. I am sure I have seen most of them atleast the most popular
ones. Anyways thanks in advance for any input Bill

Bill,
Make your loop tunable. Variable caps aren't that hard to find.
Find a program to calculate the inductance of an inductor.
Try a google search of Reg Edwards, Reg is no longer with us but
his wonderful programs are still available.
(Someone else may want to post some solenoid inductance calculators)
Make an inductor of 240uh. ( Yes, other values will work)
A pure 240uh inductor and a 56pf cap resonate at about 1370khz.
(no inductor is pure, your inductor will have interwinding capacitance,
maybe 15pf, so 56pf minus 15pf is 41pf) So 41pf would make it resonate
at 1370khz. (pf = picofarad)
You could use a 100pf cap that will tune from about 1000khz to almost
1600khz.
Using a 365pf cap, this will tune almost the entire AM band.

Make an inductor of whatever size you are comfortable with 1ft to 8ft.
(Rotation is important but once you find the direction that minimizes noise
for your one station you have it.) So if you have a wall that is oriented
correctly
you could string wire around the corners.
You can go simple, as in wind it on styrofoam or a carboard box or spend
time
on a good frame and base and easy rotation.
If you get this far then there are a few ways to couple the signal into
your radio.
Tell me what you don't understand and I'll do my best to inform you.
Mike