Ramsey Electronics CT255 manual Congratulations, Assembly Instructions for Custom Case

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CONGRATULATIONS !

Your binary thermometer is now complete! Have a final look over your work, paying particular attention to the orientation of diodes, capacitors, and IC’s. Remember that any problems you find now can save time and effort after the unit has been cased up and final assembled.

ASSEMBLY INSTRUCTIONS FOR CUSTOM CASE

The enclosure is a key element to the overall pride you will have upon complet- ing your Ramsey kit. The enclosure will show how you were able to “build from scratch” a commercial piece of high-tech electronics. For some of us, the en- closure will also hide a number of “not-so-pretty” assembly mistakes. Once the kit is enclosed, your friends will never know that you were new to soldering. Finally, the enclosure case will protect your electronics from many possible causes of damage so that you can receive years worth of enjoyment using, talking about, and remembering the fun you had building your kit. In short, TAKE YOUR TIME when assembling the enclosure. This is the part that you and your friends will look at and admire for years!

ˆ1. Lay the front and rear plastic plates over their corresponding labels to verify which sticker goes with which panel. You’ll want to work with one panel at a time to avoid possible mix-ups.

ˆ2. Remove the backing material from one of the stickers and line it up properly on its pre-punched panel. Make sure that they are aligned cor- rectly before allowing them to touch the plastic plates. They stick the first time, line them up right!

ˆ3. Use a sharp hobby knife to cut out the holes in the labels along the pre- punched holes. A short sawing motion works well around the inner circum- ference of the holes.

ˆ4. Repeat the above steps for the other panel.

ˆ5. Insert the board into the case with the knobs and LED extending through the holes in the front panel.

ˆ6. Raise the rear portion of the PC board and extend the jacks through the rear plastic plate. Insert the plate into the grooves on the base tray.

7.Secure the PC board to the bottom base tray with 4 short Phillips head screws.

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Contents Computemp 255 Binary Thermometer KIT Ramsey Transmitter Kits KIT Assembly Introduction CB B OA RD in CA SEBinary counter Circuit DescriptionScaling to Celsius DAC Digital to Analog ConverterADC Analog to Digital Converter? In a sense… Oh that extra count More on the ADCFor the complicated Fahrenheit design How the counter oscillator worksRestarting the conversion cycle CT255 Binary math Bit # Value 128 Some random parts, and what they do CT255 Schematic Diagram CT255 Parts Layout Diagram Semiconductors Parts Supplied with Your CT255 KITCapacitors ResistorsEnough of that ... let’s get started Ramsey LEARN-AS-YOU-BUILD KIT AssemblyCT255 Thermometer Assembly Instructions CT255 CT255 CT255 Front View LM35DZ Congratulations Assembly Instructions for Custom CaseUSE of Your Computemp Still Having TROUBLE? Troubleshooting GuideConclusion Ramsey Kit Warranty Fishers Station Drive Victor, New York Phone 585 Required ToolsAdditional Suggested Items Ramsey ELECTRONICS, INC

CT255 specifications

The Ramsey Electronics CT255 is a versatile and advanced communication tool designed for radio enthusiasts and professionals alike. As a 2-meter FM transceiver, it is known for its robust performance and extensive feature set, making it ideal for both casual users and serious operators.

One of the standout features of the CT255 is its compact design, allowing for easy integration into various environments such as home stations or portable setups. The unit is built with user-friendliness in mind, featuring an intuitive interface with a clear display and easily accessible controls. This ensures that users can quickly tune into their desired frequencies and modify settings without extensive technical knowledge.

The CT255 operates on a frequency range from 144 to 148 MHz, providing access to the popular 2-meter amateur radio band. This frequency capability is complemented by an impressive output power of up to 25 watts, ensuring robust communication over extended distances. It also includes a built-in automatic repeater shift, which simplifies contacts through repeaters, making it an excellent choice for those looking to enhance their communication range.

In terms of technology, the CT255 employs advanced digital signal processing (DSP), which significantly improves audio clarity and reduces background noise. This makes communication clearer, even in less-than-ideal conditions. Additionally, the transceiver features an array of scanning functions, including memory scan and priority scan, allowing users to monitor multiple channels effortlessly.

The CT255 comes equipped with multiple memory channels, enabling easy access to frequently used frequencies. This feature is particularly useful for users who participate in various nets or have multiple repeaters they commonly contact. Moreover, the unit supports CTCSS and DCS tones, which adds an extra layer of privacy and reduces interference from unwanted transmissions.

Safety and durability are also key characteristics of the CT255. The robust construction ensures it can withstand the rigors of regular use, making it suitable for field operations. It is designed with heat dissipation features to prevent overheating during prolonged use, ensuring reliability during critical communications.

In conclusion, the Ramsey Electronics CT255 is a well-rounded transceiver that brings together advanced technology, user-centric design, and excellent performance. Its range of features makes it an appealing choice for radio amateurs seeking a dependable and efficient communication solution. Whether for casual chatting or emergency communications, the CT255 stands out as a reliable tool that meets the demands of modern radio users.
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