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Notes:

•If you do not have special phone services, pressing FLASH/DEL might disconnect the current call.

•The redial memory does not store a FLASH/DEL entry or any digits entered after you press FLASH/ DEL.

USING TONE SERVICES ON A PULSE LINE

Some special services, such as bank by phone, require tone signals. If you have pulse service, you can still use these special tone services by follow- ing these steps.

1.Set TONE/PULSE on the base to

PULSE.

2.Dial the service’s main number.

3.When the service answers, press

*on the keypad. A appears on the display. Then dial the additional numbers. The phone sends these numbers as tone signals.

4.When you complete the call, place the handset on the cradle or press TALK to disconnect the call. The phone automatically resets to the pulse mode.

Note: We recommend you not use RE- DIAL to dial numbers that include a tone (*) entry.

USING PAGE

The PAGE feature allows someone at the base to page you at the handset. It also helps you find the handset if you misplaced it.

With the handset’s power on, the handset beeps four sets of two beeps when you press PAGE on the base. The TALK key on the handset flashes, and the channel number and INT ap- pear on the display.

Note: The handset will not beep during a call.

MEMORY DIALING

You can store up to 30 phone numbers for quick and easy dialing. Each stored number can be up to 16 digits long.

Notes:

•If TONE/PULSE is set to PULSE and you want to use tone dialing for a memory number, you must store the tone entry along with the number.

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Radio Shack ET-543 owner manual Using, Memory Dialing
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ET-543 specifications

The Radio Shack ET-543 is a noteworthy addition to the realm of portable electronic technology, particularly in the category of handheld calculators and educational tools. Launched during a vibrant era of innovation, the ET-543 encapsulates the spirit of the late 20th century, when personal computing and digital gadgets became increasingly accessible to the general public.

At its core, the ET-543 features a natural display that allows for easy viewing of calculations, making it user-friendly for both novices and seasoned users alike. The device is equipped with a combination of mathematical functions that streamline computations ranging from basic arithmetic to more complex algebraic operations. This wide array of capabilities makes the ET-543 an ideal choice for students and professionals who require a reliable tool for everyday calculations.

One of the standout technologies of the ET-543 is its robust memory function, which allows users to store multiple calculations for later use. This feature is particularly beneficial for users who engage in repetitive tasks or require a quick reference for previously calculated values. Coupled with its programmable functions, the ET-543 presents a versatile platform that can accommodate a range of mathematical needs.

In terms of design, the Radio Shack ET-543 boasts a compact and lightweight form factor, making it highly portable. This characteristic is essential for users who need a dependable calculator on the go, whether in the classroom, workplace, or during travel. The button layout is intuitive, allowing for easy navigation through various functions without the need for extensive training.

Another important aspect of the ET-543 is its educational value. The device serves as a practical teaching aid, helping students grasp fundamental concepts of mathematics and computation. Its durability and ease of use ensure that it stands up to repeated use in educational environments.

In summary, the Radio Shack ET-543 is more than just a calculator; it embodies the fusion of technological innovation and user-centric design. With features tailored to meet a variety of mathematical challenges, coupled with its portability and educational utility, the ET-543 remains a symbol of practical technology that resonates with users across generations.
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