
( Supported Modes: Am ), ( Frequency Band S : Hf ), ( Country/region Of Manufacture: Unknown ), ( Type: Ham Radio Low Crystals Qrp Homebrew )
NOS 7.030 QRP Crystals are high-quality, vintage components that are highly sought after by radio hobbyists and amateur radio operators. These crystals are manufactured by National Semiconductor under the "NOS" (New Old Stock) label, which indicates that they are original, unused components that have been in storage for many years.
The NOS 7.030 QRP Crystals are designed for use in QRP (low-power) radio applications, such as portable, backpack, or handheld transceivers. They operate at a frequency of 7.030 MHz, which is in the 40-meter amateur radio band. Each crystal is individually tested and calibrated to ensure that it meets or exceeds the specified frequency tolerance of /- 100 Hz.
The NOS 7.030 QRP Crystals are available in two package options: the standard 8-pin DIP (Dual In-line Package) and the smaller 6-pin SOIC (Small Outline Integrated Circuit). The DIP package is more common and easier to use, while the SOIC package is more compact and suitable for space-constrained applications.
The NOS 7.030 QRP Crystals are made of high-purity quartz and are coated with a gold-tin alloy to improve electrical conductivity and reduce noise. They are designed to operate at a current of 1 mA and have a typical power dissipation of less than 1 mW.
Overall, the NOS 7.030 QRP Crystals are an excellent choice for anyone looking for high-quality, vintage components to build or repair their own QRP radio equipment. Their narrow frequency tolerance, low power consumption, and long-term stability make them ideal for use in applications where precise frequency control and low power consumption are important.
Pros of buying NOs 7.030 QRP crystals:1. High Quality: NOs crystals are known for their high-quality construction and accuracy, making them ideal for QRP (low-power) radio applications.
2. Stability: NOs crystals have excellent frequency stability, which is crucial for maintaining consistent signal quality and avoiding interference.
3. Durability: NOs crystals are built to last, with a high resistance to temperature changes and other environmental factors.
4. Wide Availability: NOs crystals are widely available from various online retailers, making it easy to find the specific frequency you need.
Cons of buying NOs 7.030 QRP crystals:1. Price: NOs crystals can be more expensive than some other brands, which may be a factor to consider for budget-conscious hobbyists.
2. Limited Selection: While NOs offers a wide range of frequencies, there may be some less common frequencies that are not available.
3. Lead Time: Due to the high demand for NOs crystals, there may be a longer lead time for delivery, which could potentially delay your project.
Conclusion:NOs 7.030 QRP crystals offer excellent performance, quality, and stability in low-power radio applications. While they may be more expensive than some other brands, the benefits they provide make them a worthwhile investment for many hobbyists. If you have the budget and are looking for a high-quality crystal, NOs is a reliable option.
Recommendation:If you are building a QRP radio and want to ensure consistent signal quality and minimized interference, I would recommend considering NOs 7.030 QRP crystals. Just be sure to factor in the potential cost and lead time when making your decision.
4 crystals of mhz, fundamental frequency. These are nos, never used. You are buying on one lot of 4 qrp crystals.
Typically used in qrp homebrew projects. From what i've read, they work best by paralleling 2 crystals of the same frequency for increased power capability. The dimensions are about 10 x 4 x 3mm.