Telephone Phone Line Recorder Adapter RJ11>3.5mm Audio Review

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(More customer reviews)This product is really inexpensive - it takes the voltage from the phone line, uses capacitors to isolate the phone line from the recorder, and then uses resistors to attenuate the voltage level down to microphone level.
Included with the box shown on amazon are a 3.5 mm to 3.5 mm stereo patchcable about 6" long and a similiar length telephone cable.
The case is plastic without any good shielding - I did pickup a hum at -55 db (referenced to 0 dB digital recording)
Be sure to check with local codes about recording calls - while most of the united states only requires ONE party in a conversation to KNOW they are recording themselves, some states such as california require BOTH parties in the call to know that you are being recorded to avoid wiretapping rules. I'm not sure about what happens when banks announce "this call may be monitored or recorded" - so my interpretation based on that message is that the other end is telling me they may record the call - so they already know they are recording it, and I know I'm recording it, so both parties know its being recorded.
Olympus makes another recording adapter that is portable and works with cellphones which renders better quality - check out Olympus TP-7 Telephone Recording Device - its twice the price of this but still cheap.

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