ASSEMBLY INSTRUCTIONS

In ALL PC-board assembly steps, our word "INSTALL" means to do this:

ˆInsert the part, oriented or "pointed" correctly, into its holes in the PC board.

ˆIf helpful, gently BEND the part's wire leads or tabs to hold it in place, with the body of the part snugly against the top side ("component side") of the circuit board.

ˆSolder ALL wires or pins of the part.

ˆTrim or "nip" all excess wire lengths extending beyond each solder connection, taking care that wire trimmings do not become lodged in solder connections.

You can see that this circuit board, the center portion in particular, is fairly well-filled with components. There's more to this receiver than the average beginner's radio or even our popular Amateur Band receivers.

Follow the assembly instructions IN SEQUENCE and check off each step as understood and completed. Some of the components require modification! Examine the schematic circuit diagram and PC Board parts layout diagram as you proceed.

Use good soldering techniques! Let your soldering iron tip heat both the component lead wire and PC board trace enough so that the wire itself AND the foil trace BOTH become hot enough TOGETHER to melt a bit of solder so that it flows smoothly from the pin to the PC board trace.

Enough said... Let’s get building!

ˆ1. Install S1, the DPDT push button switch. Ensure that the white plastic switch extends out over the edge of the PC board and that the switch is flush to the board. Solder all six pins.

ˆ2. Install one of the 10K PC mount potentiometers, R14. Be sure it is seated flush to the PC board, then solder all 5 pins.

ˆ3. Install the other 10K PC mount pot, R21. Take care to seat it properly before soldering the 5 pins.

ˆ4. Install J1, the RCA jack. You will want to check your placement before soldering and be sure to solder all 4 tabs.

SR2 – 12

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Ramsey Electronics SR2 manual Assembly Instructions, Enough said... Let’s get building
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SR2 specifications

The Ramsey Electronics SR2 is a versatile and robust RF transmitter designed for a range of applications, including hobbyist projects, educational purposes, and practical uses in the field of amateur radio. Its compact size and user-friendly design make it a popular choice among enthusiasts and professionals alike.

One of the standout features of the SR2 is its frequency range, which typically spans from 88 MHz to 108 MHz. This wide range allows users to operate within the FM band, making it suitable for transmitting audio signals, music, or voice communications. This flexibility is particularly advantageous for those interested in creating their own radio stations or conducting experiments in radio frequency communication.

The SR2 utilizes advanced technology to ensure high-quality transmission. It incorporates modulation techniques that enhance audio clarity and reduce noise, resulting in a smoother listening experience. The transmitter is also equipped with a low distortion audio preamplifier, ensuring that sound quality remains pristine even at higher transmission stages.

Another important characteristic of the SR2 is its ease of assembly. The kit comes with all necessary components, including a printed circuit board (PCB), which simplifies the building process for users. Detailed instructions guide the user through the assembly, making it accessible even for those with limited electronics experience.

The SR2 also boasts a power output of approximately 100 mW, allowing for a transmission range of up to several miles, depending on the surroundings and antenna used. This power level strikes a balance between effective transmission and energy efficiency, catering to various operational settings.

In terms of design, the SR2 features a compact enclosure that protects the internal components from dust and damage, which is vital for maintaining reliability in various environments. Its user-friendly interface includes adjustable controls for tuning and volume, enabling users to customize their transmission settings easily.

Additionally, the SR2 is compatible with a variety of external audio sources, such as microphones, CD players, and smartphones, enhancing its versatility. The unit can be powered by standard power supplies or batteries, making it suitable for both portable and stationary use.

Overall, the Ramsey Electronics SR2 is a well-designed RF transmitter that combines quality, functionality, and ease of use, making it an excellent choice for anyone looking to explore the world of radio transmission.
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