RM Italy Low Pass Filter, 36MHz Cutoff, 1200W SSB, 9-Pole Chebyshev, SO-239

High-Power Low Pass Filter for 10m, 11m and 12m Bands

The RM Italy 35MHz Low Pass Filter is a precision 9-pole Chebyshev design with a 36MHz cutoff frequency, built to suppress harmonics and out-of-band interference from HF transmitters operating on the 10m, 11m, and 12m bands. With a maximum power rating of 1200W SSB (600W constant carrier) and ultra-low insertion loss of less than 0.1dB, it is suitable for high-power amateur and CB installations where TVI suppression or harmonic attenuation is required. SO-239 input and output connectors feature Teflon insulators and gold-plated terminals for reliable, low-loss connections.

Key Features

• 9-pole Chebyshev low pass filter design
• 36MHz cutoff frequency — suitable for 10m, 11m, and 12m bands
• High power handling: 1200W SSB / 600W constant carrier
• Ultra-low insertion loss: less than 0.1dB
• Low input VSWR: less than 1.15:1
• Stopband attenuation: >50dB at 55MHz, >70dB at 100MHz
• 50 Ohm input and output impedance
• SO-239 connectors with Teflon insulator and gold-plated terminals
• Compact form factor: 230 × 50 × 40mm

Technical Specifications

• Filter Type: 9-pole Chebyshev low pass
• Cutoff Frequency: 36MHz
• Suitable Bands: 12m, 11m, 10m
• Maximum Power: 1200W (SSB) / 600W (constant carrier)
• Impedance: 50 Ohms
• Insertion Loss: Less than 0.1dB
• Input VSWR: Less than 1.15:1
• Stopband Attenuation: >50dB @ 55MHz, >70dB @ 100MHz
• Connectors: SO-239, Teflon insulator, gold-plated terminals
• Dimensions: L230 × W50 × H40mm