Ramsey Electronics TT1 Instruction Manual - page 4
TT1
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INTRODUCTION
Many times we wish to remember verbatim what was said during a phone
call. Whether it’s directions to grandma’s house or repair instructions for
some other manufacturers electronic kits, the TT1 will be your “silent
secretary”, recording calls for future playback.
The Ramsey TT1 “Tattle-tale” is a telephone recorder, which any person
may build and use in accordance with the laws of one’s state and local
authorities. For U.S. residents, it is illegal to tape someones telephone
conversation without informing all parties that the conversation is being
taped. So remember, when you pick up the phone and say hello also inform
the caller the conversation is being recorded. The TT1’s capabilities
make it practical for many uses, but one should remember that this kit is
definitely not a toy. You may need to consult local regulations to provide you
with some information necessary to enjoy the TT1’s capabilities in
accordance with the law.
Typical uses for the TT1 include:
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Recording directions to a particular location.
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Varifing calls made from or to your telephone.
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Taping annoying or obscene calls.
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Or how about those business calls you don’t want to forget.
We think that you will be very pleased with the “Hands Off” operation,
audio quality, and ease of assembly of this build-it-yourself telephone
recorder. If you follow our assembly instructions carefully and use your
TT1 in accordance with applicable laws you’ll have a proud “reminder”
for all those phone conversations to come.
TT1 CIRCUIT OPERATING DESCRIPTION
Take a look at the schematic diagram as we walk through the circuit.
As you can see there is not much to the telephone recorder. For the purpose
of making this as easy as possible we will assume the “Power” switch is “on”
and the “Mode” switch is in the “record” position. We will discuss these
switches later.
STAND-BY MODE
When the phone receiver is “on hook” (hung up), the voltage that is applied
through the telephone line to J1 is about 48 volts. This voltage is supplied by
a room full of huge batteries at your local telephone company.