‰28. Install C20, a 0.01 uF ceramic capacitor (marked 103).

‰29. Install R22, a 470 ohm resistor (yellow-violet-brown).

‰30. Install C29, a 0.001 uF ceramic capacitor (marked 102).

‰31. Install L21, the other 33 nH four turn inductor. This coil combined with C28 makes the amplifier of Q20 selective, so it only amplifies the desired frequency area of 433.42 MHz.

‰32. Install C28, a 10 pF ceramic capacitor (marked 10 or 10k).

‰33. Install C31, a 10 uF electrolytic capacitor. Check its orientation before soldering into place.

‰34. Install VR20, the 78L05 voltage regulator. Make sure the flat side of this component is in the same orientation as shown on the silkscreen. This part works by “smoothing” out any junk that may reside on the non- regulated input side of the part. It also allows you to run this kit from a wide range of supply voltages while it keeps the output fixed at 5V.

‰35. Install D21, the large 1N4002 regulator diode. If you are using an AC power supply, this diode helps to convert the AC source voltage to pulsed DC. C32 (which we install last for mechanical reasons) accumulates the pulsed DC and smoothes it out so that regulator VR20 can process it the rest of the way and provide us with a clean power source. Make sure the line which indicates the Cathode is installed in the same orientation as shown on the silk screen and Parts Layout Diagram.

‰36. Install S20, the power switch. Solder only one pin until you are sure the switch is flush to the board. Then solder the rest.

‰37. Install C32, the large 1000 uF electrolytic capacitor. Double check its orientation before soldering as this is especially critical with this part.

‰38. Install ANT1, the 6” piece of bus wire. Solder the wire in place where the circuit board has been marked “ANT1” for easy identification. Use a ruler and trim off any extra wire if longer then 6” (5.75 to 6.5” works great).

It looks like we have all of the holes stuffed with components now so I guess we are finished, right? Actually we aren’t quite done yet. Take a moment to go back through the steps you’ve completed and check the orientation of all the installed devices before plugging in the power. This will help you to avoid damaging any critical components by accident when you fire-it-up the first time (note: we are trying to avoid the “fire” in fire-it-up). Make sure to check all the capacitors for proper orientation, the micro-controller IC, as well as the rectifier diode and VR20.

RRW1B • 12

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Ramsey Electronics rrw1b manual RRW1B
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rrw1b specifications

The Ramsey Electronics RRW1B is a versatile and compact wireless transmitter and receiver system designed for various applications, including remote control and communications. This innovative device operates on the 27 MHz band, offering a robust solution for users seeking reliable wireless connectivity. One of the standout features of the RRW1B is its impressive transmission range, allowing for operation up to 1000 feet under optimal conditions. This makes it suitable for both hobbyist projects and professional applications where distance and reliability are critical.

The RRW1B utilizes frequency modulation (FM) technology, which ensures clear signal transmission and minimal interference from other devices operating on similar frequencies. Its design incorporates advanced circuitry that enhances its performance, contributing to a stable link between the transmitter and receiver while effectively reducing noise. This technology is particularly beneficial for applications in remote sensing, data logging, and control systems where accuracy is paramount.

Another notable characteristic of the RRW1B is its user-friendly interface, which allows for easy setup and configuration. The system is designed with the end-user in mind, featuring color-coded terminals and intuitive controls that facilitate straightforward installation. This aspect makes it accessible to both beginners and experienced technicians, reducing the learning curve typically associated with wireless systems.

The RRW1B is also characterized by its low power consumption, making it an energy-efficient choice for long-term use. This is particularly advantageous for battery-operated devices, extending their operational lifespan and reducing the frequency of battery replacements. Moreover, the RF (radio frequency) modules used in the RRW1B are known for their durability and resilience, ensuring that users can rely on the system in various environments, including those with challenging electromagnetic conditions.

In summary, the Ramsey Electronics RRW1B stands out due to its excellent range, FM technology, ease of use, and energy efficiency. These features make it a popular choice among hobbyists and professionals alike, providing a seamless wireless solution for a myriad of applications. Whether users are looking to enhance their home automation systems, develop remote-control gadgets, or implement wireless data communication, the RRW1B proves to be a capable and dependable option. Its combination of performance, simplicity, and versatility makes it a valuable addition to the toolkit of anyone interested in electronics and wireless technology.
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