41 lines
2.2 KiB
Plaintext
41 lines
2.2 KiB
Plaintext
___________________________
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/ /
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/ CLEAR BOX /
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\__________________________/
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The idea for the Clear box comes from an article in the newsletter 2600.
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The clear box works on 'post pay' coin phones, pay phones that require
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money only after the connection has been made. The way this works is: After
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the connection is made the mouthpiece of the phone is muted but not the ear-
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piece, free calls to dial-it services can be made with these phones.
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In order to talk to the person you called without paying (NOTE: It is
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against the law to do this!!) Take yourself down to your nearby electronics
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store and get a four transistor amplifier and a telephone suction cup induct-
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ive pick-up. Put the pick-up on the earpiece and plug it into the output of
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the amplifier, and plug a microphone into the input. You then talk into your
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microphone and listen normally through the earpiece.
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Radio Shack sells an item that won't need much modification, and that
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should work the same as the above construction. It is their 'Portable snap-on
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handset amplifier' (Part # 43-238) Their description says to put it on the
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earpiece and it will boost the caller's voice to five times the normal level.
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In order to make this function like a clear box one would have to take the
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amplifier apart and remove the internal speaker, in its place, connect the
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suction cup inductive pick-up. Place the pick-up (which is now the speaker)
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to the mouth piece of the payphone, and talk into the microphone of the ampli-
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fier.
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The line will not cut off, and will wait forever for you to put the coins
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in.
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Note also that these types of payphones are not connected to the tsps in
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the same way as normal payphones. The phone does all the charging and not the
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Central Office. It is because of this, that a phone connected to the lines
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BEFORE the payphone would act just like a normal phone. So get out your
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smallest phone, cut off the jack and strip the wires. Connect the wires to
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two alligator clips. Then you can clip onto the payphone's wires BEFORE they
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connect to the payphone, you then have a normal telephone line that you don't
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pay the bills on!
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SYSOP of OSUNY 10-31-84
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