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17 meter WARC, 18.068 – 18.168 MHz Band-Pass Filter 2 kW.
The WARC bands are three portions of the shortwave radio spectrum used by licensed and/or certified amateur radio operators. They consist of 30 meters (10.100–10.150 MHz), 17 meters (18.068–18.168 MHz) and 12 meters (24.890–24.990 MHz). They were named after the World Administrative Radio Conference. This WARC filter can be used for power up to 2 kW, but it is also perfect for less power. Since its low loss, 18 MHz WARC band pass filter is perfect for transmitting as well for receiving.
2 kW WARC Band-Pass Filter 18 MHz appearance. 17m band.
|Electrical specifications:||18 MHz Band Pass Filter|
|Frequency Range:||18.068 – 18.168 MHz|
|Insertion Loss:||0.32 dB|
|Input return loss batter than||-36 dB|
|Nominal Impedance:||50 Ohm|
|Maximum Power Input at SWR 1:1||2000 W|
|Maximum Power Input at SWR 1:1.5||1300 W|
|Maximum Power Input at SWR 1:2||1050 W|
|Maximum Power Input at SWR 1:3||900 W|
|Short Period of Time at 1:1||3000 W|
|Connectors:||SO239 default or “N” by order|
|Fan:||+12 V, 0.2 A|
|Atennuation on nearest band:|
|1.8 MHz||+88 dB|
|3.5 MHz||+70 dB|
|7 MHz||+52 dB|
|14 MHz||+42 dB|
|21 MHz||+40 dB|
|24 MHz||+46 dB|
|28 MHz||+49 dB|
SWR on 18 MHz WARC band. Average SWR is 1.03 across band.
The recorded data on the assembled filter with HP8753ES full 2-port calibrated are presented below. The following 3 images show the S parameters of the most important points.
High Power 30 m HF Band-pass 10 MHz 2 kW filter.
Similar HF band-pass filters:
160 meter band: 160 meter, 1.8 MHz High Power Band-Pass Filter 4 kW
80 meter band: 80 meter, 3.5 MHz High Power Band-Pass Filter 4 kW
40 meter band: 40 meter, 7 MHz High Power Band-Pass Filter 4 kW
20 meter band: 20 meter, 14 MHz High Power Band-Pass Filter 4 kW
15 meter band: 15 meter, 21 MHz High Power Band-Pass Filter 4 kW
10 meter band: 10 meter, 28 MHz High Power Band-Pass Filter 4 kW