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Your ET-545 operates on standard ra- dio frequencies, as allocated by the FCC. Therefore, it is possible for other radio units operating on similar fre- quencies, within a certain area, to in- advertently intercept your conversa- tions and/or cause interference on your cordless telephone. This lack of privacy can occur with any cordless telephone.

READ THIS BEFORE INSTALLATION

We have designed your telephone to conform to federal regulations, and you can connect it to most telephone lines. However, each device that you connect to the phone line draws pow- er from the phone line. We refer to this power draw as the device’s ringer equivalence number, or REN. The REN is on the bottom of your phone’s base.

If you are using more than one phone or other device on the line, add up all the RENs. If the total is more than five, your phone might not ring. In rural ar- eas, a total REN of three might impair ringer operation. If ringer operation is impaired, remove a device from the line.

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FCC STATEMENT

This telephone complies with Part 68 of FCC Rules. You must, upon re- quest, provide the FCC registration number and the REN to your phone company. These numbers are on the bottom of your phone’s base.

Note: You must not connect your phone to any of the following:

•Coin-operated systems

•Party-line systems

•Most electronic key phone sys- tems

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Radio Shack ET-545 owner manual Read this Before Installation, FCC Statement
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ET-545 specifications

The Radio Shack ET-545 is a classic electronic device that epitomizes the charm and functionality of portable technology from the late 20th century. Introduced during a time when personal electronics were gaining rapid popularity, it catered particularly to enthusiasts who sought reliability and usability in a compact design.

One of the standout features of the ET-545 is its advanced calculator functionality. It features a multi-line display, allowing users to view complex calculations and equations in a clear manner. This enhances the user experience, especially for students and professionals who often grapple with intricate mathematical problems. The calculator supports a range of mathematical functions, including trigonometric and exponential calculations, making it a versatile tool in academic and professional settings.

In terms of design, the ET-545 showcases a user-friendly interface with well-spaced keys and a simple layout. The device is compact, easily fitting into a pocket or bag, which makes it an ideal companion for those on the go. The durability of the build quality is commendable, reflecting the robust manufacturing standards of Radio Shack, a brand known for its long-lasting electronics.

The ET-545 is powered by batteries, emphasizing portability. This aspect eliminates the hassle of finding a power outlet when you're out and about. Users appreciate the long battery life, ensuring that the device remains functional for extended periods without the need for frequent battery changes.

Another notable characteristic of the ET-545 is its ability to perform conversions, such as unit conversions for measurements and currency, which were groundbreaking features for handheld devices of its time. This functionality proved invaluable for travelers and professionals dealing with international transactions.

In conclusion, the Radio Shack ET-545 is not just a piece of technology; it represents a significant chapter in the evolution of portable electronics. With its combination of mathematical capabilities, portability, and user-friendly design, it serves as a testament to the ingenuity of its era. For those who have fond memories of using this device, the ET-545 remains an iconic symbol of a time when personal electronics were just beginning to transform everyday life.
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