80m, 3.5 MHz High power band-pass filter 4kW

  • 80m, 3.5 MHz High power band-pass filter 4kW

80m High power band-pass filter 3.5 - 4 MHz 4kW

High power 80m 3.5 - 4 MHz bandpass filters for BIG GUNS. 80m Band-Pass filter is designed for more power than presented.


Inside filter are High-Q coils.


The recorded data on the assembled filter with HP8753ES full 2-port calibrated are presented below.

4 kW 80m 3.5-4MHz Band-Pass Filter S21 (forward) full range to 30 MHz.



High power BandPass Filter 3.5 - 4MHz Power Derating Chart.



Electrical Specifications 80 meter Band pass Filter
Frequency Range: 3.5 MHz - 4 MHz
Insertion Loss: < 0.12 dB
Input Return Loss Batter Than: -31 dB
Nominal Input Impedance: 50 Ohms
Attenuation on Nearest Band: 35 dB - 55 dB
Maximum Power Input at SWR 1:1 4000 W
Maximum Power Input at SWR 1:1.5 3500 W
Maximum Power Input at SWR 1:2 3200 W
Maximum Power Input at SWR 1:3 3000 W
Mechanical Specifications
Connectors: SO239 Default or "N", 7/16 DIN by Order*
Filter Size: 455 mm x 220 mm x 135 mm
Fan Power Consumption: +12 V DC, 200 mA**
BandPass Filter Net Weight: 2.8 kg
Mounting: Any position (5 mm hole)
Work Environment: Indoor

*No price difference between SO 239 & "N" connectors

** Fan usage is not required for power below 1500 W.

Filter size measured on longest side without fan.


We produce heavy duty antennas for HF Band. Link to our HF Antenna products: HF Antenna list

  • Product Code: 0603
  • Availability: In Stock
  • 199.00€

Tags: 3.5MHz, 4MHz, 80m, 80meters, HF BandPass, RFI Band-Pass filter, BPF, High Q, Low Loss, 4kW, Transmitting, High Power, Field Day Filter, Ham Radio Filter