20 meter 4000 W High Power Band Pass Filter
High power 20 meter 14 – 14.35 MHz band pass filters for BIG GUNS.
Band pass filter is perfect for multi-station environment like special events, field day, portable operating to protect receivers from excessively strong out-of-band signals. Our 20 meter filter is designed to have extremely low loss from 14 – 14.35 MHz (20 meter band) and it is 0.12 dB! Out-of-band interference is extremely suppressed. The filter is ideal to be on both reception and transmission. The 20 meter band pass filter is declared at 4000 W, but filters is designed for more power than presented. Band pass filter is placed in a powder-coated aluminum box. Silver-plated SO239 connectors and excellent filter design enable extremely low losses through 20 meters band and high attenuation of out-of-band signals.
20 meter band pass filter external appearance.
Electrical specifications of 4 kW HF Band pass (14 – 14.35 MHz, 20 meter Band) are given in the table below.
| Specifications | |
|---|---|
| Frequency range: | 14 – 14.35 MHz |
| Insertion loss: | 0.12 dB |
| Input return loss better than: | -35 dB |
| Attenuation on nearest band: | 35 – 55 dB |
| Nominal impedance: | 50 Ohm |
| Maximum power input at SWR 1:1 | 4000 W |
| Maximum power input at SWR 1:1 | 3200 W |
| Maximum power input at SWR 1:1 | 2600 W |
| Maximum power input at SWR 1:1 | 2000 W |
| Connectors: | SO239 or “N” |
The recorded data on the assembled filter with HP8753ES full 2-port calibrated is presented below.
4000 W 14 – 14.35 MHz Band-Pass Filter S11 and S21 measurements.
Out-of-band measurements.
| Ham Radio Bands | Attenuation (more than |
|---|---|
| 160 meter | 45 dB |
| 80 meter | 38 dB |
| 40 meter | 50 dB |
| 15 meter | 60 dB |
| 10 meter | 45 dB |
Actual box size 20 meter band pass filter. The filter is placed and closed with a strong aluminum box. The filter is designed and adjusted together with the box so that the shown and measured characteristics are identical.
High power Band-Pass Filter 14 MHz Power Derating Chart and label:
Similar HF band-pass filters:
160 meter band: 160 meter High power band pass filter – 4 kW
80 meter band: 80 meter High power band pass filter – 4 kW
40 meter band: 40 meter High power band pass filter – 4 kW
15 meter band: 15 meter High power band pass filter – 4 kW
10 meter band: 10 meter High power band pass filter – 4 kW
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