RF Meca 4000W 20M Transmit Band Pass Filters are designed for high power contesting and DXing. They are also perfect for high power DXpeditions when multiband antennas are used. These high-quality bandpass filters, from the French manufacturer RF Meca, feature an HF-tight sheet metal housing to maintain optimal functionality and signal integrity. A rear panel 12VDC fan provides component cooling during continuous operations.

Advantages of RF Meca High Power Bandpass Filters:

- Reduction of Interference: Band pass filters block unwanted signals outside the target frequency band, minimizing interference from adjacent frequencies and improving signal quality.

- Improved Signal-to-Noise Ratio (SNR): By suppressing noise and interference outside the desired frequency range, band pass filters enhance the SNR. This makes it easier for the receiver to detect weak signals in the target frequency band, effectively increasing the system's sensitivity.

- Avoiding Overload: Strong signals outside the target band can overload the receiver and cause distortion. Band pass filters prevent this by allowing only the desired frequency band to pass through.

- Avoidance of Harmonic Interference: Band pass filters help suppress transmitted harmonic and other non-linear distortions that could radiate into neighboring bands.

Additional Features and Specifications:

• Band: 20m

• Frequency Range: 14.0-14.35 MHz

• Power Rating: 4000W CW (Continuous)

• Return Loss: -30dB (<1.07:1 SWR)

• Insertion Loss: -0.35dB

• Maximum Load Capacity: 4000W PEP

• Coaxial Connectors: UHF female/SO-239

• Dimensions: (W x H x D) 22.375 x 6.250 x 9.125 in. (568.3 x 158.8 x 231.8 mm) - including fan projection