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Bandpass filter «BPF-21»
The filter "BPF-21" (15 Meters band) is purposed to provide RF compatibility of a few simultaneously transmitted signals at amateur radio stations. This filter is targeted to the contest club stations competing in multi transmitter categories, to individual SO2R contesters and to major DX-peditions.
The filters are installed between the transceiver and power amplifier, to cut off the interference from the radio emission on another band.
Each filter "BPF-21" supplied with the data on insertion loss (S21) and return loss (S11) parameters (measured by Vector Network Analyzer), frequency response graph and VSWR. These plots show the most detailed characteristics of each particular filter.
Specifications:
| Attenuation of 2-nd harmonic: | at least 40 dB |
| VSWR: | no more than 1:1.25 |
| Loss in the passband: | no more than 0.6 dB |
| Impedance: | 50 OHm |
| Maximum allowable continuous power: | 100W |
| Dimensions of the filter: | 192x86x65 mm (7.56”x3.39”x2.56”) |
| Weight: | not more than 0.35 kg. (0.77lbs) |
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