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