Here
is another project I did while in Iraq. After reading Dan
Petersens "Venerable Loopstick" Xtal Society March, 2002 article, I
decided to give one a go. Following his instructions were quite
simple and it produced a variable loopstick that performed awsome.
My next step was to do something with it. I had this
project box kicking around and decided to mount it on top. I got
really lucky with the size because it *just* barely fit without it
poking out the top too far. The loopstick was coated with a home
made Q Dope. I found some paint thinner and disolved two
styrophone cups in it to make a nice clear pasty mix. What a nice
coat and if you haven't ever tried this I highly recomend you give it a
shot. The loopstick's Inductance varied from 60uH to 330uH.
After toying around with different capacitors I decided to go
with two separate ones so I could tune the whole band. See
schematic below. From the top picture you will see that there are
no *real switches* just shorting tabs I fabricated. One is for
the tuning and the other is for the trimmer. These loopsticks
have been around for a long time and are a fantastic product of amazing
properties of ferrite. If you have any questions about this radio
please email me.
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