DECIBEL PRODUCTS DB4140-1C Cavity Notch Filter

( Brand: Decibel Products ), ( Manufacturer Part Number: DB4140-1C ), ( Model: DECIBEL PRODUCTS DB4140-1C ), ( Type: Notch Filter ), ( Band: Vhf ), ( Country Of Origin: United States )

Review DECIBEL PRODUCTS Cavity Notch Filter

The Decibel DB4140-1C Cavity Notch Filter is a high-performance acoustic component designed for applications in various industries, including telecommunications, audio, and defense. This notch filter is specifically engineered to provide precise attenuation of targeted frequency bands, making it an ideal solution for filtering out unwanted noise or interference.

The DB4140-1C is constructed using a high-quality, ceramic resonator material, ensuring excellent stability and consistency over a wide temperature range. The filter cavity is designed as a single-pole, single-notch resonator, providing a sharp and deep notch in the frequency response curve. The filter is also designed to be compact, with a small form factor that makes it easy to integrate into a variety of systems.

The DB4140-1C notch filter offers a nominal insertion loss of 0.5 dB and a return loss of 15 dB or better, ensuring excellent signal attenuation and minimal reflection. The filter has a center frequency of 1410 MHz, with a bandwidth of approximately 11.5 MHz, making it suitable for filtering out specific frequencies in the UHF band.

The DB4140-1C is designed to be used in a series configuration, with the filter elements connected in a cascaded fashion to achieve the desired attenuation of multiple frequency bands. The filter is also available in other center frequencies and bandwidths, making it a versatile solution for a range of applications.

The DB4140-1C Cavity Notch Filter is housed in a rugged, RoHS-compliant, epoxy-coated metal case, ensuring durability and protection against environmental conditions. The filter is also supplied with a mounting bracket and screws for easy installation. Overall, the Decibel DB4140-1C Cavity Notch Filter is an excellent choice for applications where precise frequency filtering is required, offering high performance, reliability, and ease of use.

The DB4140-1C cavity notch filter manufactured by Decibel Laboratories is a high-performance filter designed for radio frequency (RF) applications. This filter offers several advantages and disadvantages, which are essential to consider before making a purchase decision.

1. High Selectivity: The DB4140-1C filter provides excellent selectivity, which is crucial in RF applications where minimizing unwanted signals is important. Its cavity design allows for a narrow bandpass, ensuring better signal purity.

2. High Power Handling: This filter can handle high power levels, making it suitable for applications where significant power is required.

3. Robust Construction: The DB4140-1C filter features a rugged construction, ensuring its durability and reliability in various operating environments.

1. Size and Weight: Compared to other filter technologies, cavity filters are generally larger and heavier due to their construction. This may not be ideal for applications where size and weight are critical factors.

2. Cost: Cavity filters like the DB4140-1C can be more expensive than other filter technologies due to their complex design and manufacturing process.

3. Tuning Complexity: Cavity filters require precise tuning, which can be time-consuming and may require specialized equipment.

In conclusion, the DB4140-1C cavity notch filter from Decibel Laboratories offers high selectivity, high power handling, and robust construction, making it a suitable choice for RF applications where signal purity and power handling are essential. However, its larger size, higher cost, and complex tuning process may be disadvantages for some applications.

If your application requires a high level of signal purity and can accommodate the larger size and higher cost, the DB4140-1C cavity notch filter could be an excellent choice. Alternatively, if size, weight, and cost are critical factors, other filter technologies, such as surface acoustic wave (SAW) or bulk acoustic wave (BAW) filters, might be more suitable. Ultimately, the decision depends on the specific requirements of your RF application.

Details:

The RF connectors are UHF-female. This filter can be returned to other frequencies, the catalog shows a frequency range of 148-174 MHz. This is a cavity notch filter, currently set for pass frequency of 158.100 MHz, and reject 157.600.

part #: db41401c prices

• $424.99-$699.99

specifications walkietalkiesz:

• brand: Decibel Products
• mpn: Db4140-1c
• model: Decibel Products Db4140-1c
• type: Notch Filter
• band: Vhf
• country of origin: United States

shipping walkietalkiesz:

• class: Standard
• carrier: UPS
• transit: 4-9 Days
• service: UPS Ground
• type: Calculated
• cost: $18.83

seller walkietalkiesz:

• # reviews: 2359
• rating: 100.0%
• city: New Berlin, Wisconsin

general walkietalkiesz:

• condition: Used
• Consumer Electronics > Radio Communication > Walkie Talkies, Two-Way Radios

returns walkietalkiesz:

• policy: No Returns

payments walkietalkiesz:

• credit card: Visa
• wallet: Google-pay
• other

offer walkietalkiesz:

• availability: In Stock
• quantity: 1
• started: February 22, 2026
• options: Ship-to-home
• best offers: True
• sold: 0

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