Ramsey Electronics SHA2 manual

Install C14, 100nF ceramic disc capacitor (marked 104).

Install R7, a 2 ohm resistor (red-black-gold).

Install C23, 100pF ceramic disc capacitor (marked 100, 100K, or 101). It’s tucked in between U2 and U4.

Install C27, 100nF ceramic disc capacitor (marked 104).

Install R14, 2 ohms (red-black-gold).

Install C12 and C24, both 220uF electrolytic capacitors. These are slightly larger than the 10uF caps you’ve been installing but the same rules apply as to polarity. Follow the stripe or band for the negative lead and place the longer positive lead in the hole marked with a “+” sign.

Now we’ll move back up and toward the middle of the board. Hopefully you’re not having too much trouble seeing where the parts are supposed to be placed.

Install C4, 10uF electrolytic capacitor. Please orient it properly. Thanks!

Install D5, 1N4000 series diode, another polarity sensitive component. The white band on the part and the white band shown on the silkscreen need to line up with each other. Solder as usual.

Install R17, 560k ohms (green-blue-yellow).

Install R15, a 100k ohm resistor (brown-black-yellow).

Install C33, 470uF electrolytic capacitor. Remember the rules for electrolytic caps and follow the “+” sign.

Install D1, 1N4000 series diode. The white band shows the way to place the part.

While you’re clipping leads on the back side of the board you can also

check the solder joints and immediately touch up any that don’t look right. You’re already looking at the connections closely and it’s a good time to spot mistakes!

Install VR1, the 7810 10V voltage regulator. The writing on the part should face the outside of the PC board. Bend the center lead out so that the part fits into the holes and solder it in.

Install D2, 1N4000 series diode. Again, follow the white band on the board and on the part for orientation.

Install R3, 1 M ohm resistor (that’s a million ohms!) (brown-black-green).

SHA2 • 15

SHA2 specifications

Ramsey Electronics SHA2 is a state-of-the-art digital transmitter designed for a wide range of applications, including DIY projects, short-range communication, and remote sensing. This powerful device allows users to transmit audio, data, and control signals wirelessly with outstanding clarity and reliability.

One of the standout features of the SHA2 is its transmission range, which can reach up to several hundred meters depending on the environment and conditions. This capability makes it an ideal choice for various applications, from hobbyist projects to more complex commercial uses. The SHA2 operates in the 2.4 GHz ISM band, which is a widely used frequency range that provides robust performance and minimal interference from other electronic devices.

The SHA2 incorporates advanced Frequency Hopping Spread Spectrum (FHSS) technology, enhancing its resilience against potential disruptions. By rapidly changing frequencies during transmission, FHSS minimizes the chance of interference and improves the overall signal integrity, ensuring a stable connection even in crowded environments. This feature is particularly beneficial for applications that require reliable and consistent data transmission.

Moreover, the SHA2 is equipped with powerful modulation schemes that support various encoding methods. As a result, users can transmit different types of signals, including analog audio, digital data, and even coded control signals. This versatility allows for creative approaches to problem-solving in diverse fields, such as automation, security systems, and wireless audio transmission.

In terms of user-friendly design, Ramsey Electronics has made the SHA2 easy to integrate into existing systems. Its compact size, along with clearly marked connection points, allows for streamlined installation. The module's low power consumption is another critical advantage, making it suitable for battery-operated devices and applications that prioritize energy efficiency.

The SHA2 is also compatible with various microcontrollers and development platforms, ensuring seamless connectivity regardless of the user's preferred technology. With its durable construction and excellent performance specifications, the Ramsey Electronics SHA2 stands out as a reliable choice for anyone looking to leverage wireless communication technology effectively. In summary, the SHA2 excels in transmission range, interference resistance, versatile signal encoding, user-friendly integration, and energy efficiency, making it a prime candidate for both hobbyists and professionals alike.