69 lines
3.0 KiB
Plaintext
69 lines
3.0 KiB
Plaintext
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- - - - - - - - - - - - - -
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- T h e G R A B B o x -
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- - - - - - - - - - - - - -
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By: Shadowspawn (502)
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This box is dedicated to all the people that can't solder
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two wires together, nevermind a complete circuit... The GRAB
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Box is probably the easiest box that can be made. It's also
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one of the most useful! This box uses inductive coupling to
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join with any radio that uses a coil for an antenna (such as an
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AM, longwave, or shortwave radio) and allows you to lengthen it
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considerably. I've seen these in DAK and other catalogues for
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20+ dollars! Now DAK is a great company, but you can make one
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or two of these yourself for under seven dollars!
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Here's the schematic, get ready to be surprised:
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O <---- Fahnstock clip
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| _____ Variable
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+--------------+------------+ \/ Capacitor
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~ +--)|-+
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~ <--- Coil |
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~ |
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+---------------------------------+
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Things you'll need/specs: It'll look something like this:
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+----antenna-----------o
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- 365pF Variable Capacitor |
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- Hand-wound coil: 1 inch dia. <C>F--/\--|COIL||--\
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11 inches long with holes | \/--|||||||--/-+
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2 inches from each end +-------------------+
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and #22 enameled wire
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wrapped between them.
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- Three corner braces (brass)
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- Four wood screws | Sand the enamel off |
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- 1 x 3 x 13 or so baseboard | the ends of the coil |
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- 30+ foot wire w/ alligator | the nearest end goes |
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clip to attach to | to the F. clip, the |
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Fahnstock Clip | farthest end to the |
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- Fahnstock Clip | plate contact. The |
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| antenna clip goes to |
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| the F. Clip. |
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Put this device next to the coil that's inside your radio.
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(The Grab box doesn't need to be inside it though, just close by)
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The closer you place it to your radio's coil, the stronger it is,
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the farther away, the more selectivity it has. And don't forget
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to peak the capacitor each time you change frequency...
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You can usually pick up a few states around you during the
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day and stations all over the US and elsewhere at night! Have
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fun!!
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Shadowspawn (502)
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@5211
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