High frequency and high isolation shortwave bandpass filter (BPF): BPF-plus 21.400
1. more details of technical parameters, please login to China antenna network (Baidu Search china antenna).
2. input impedance: 50 Europe; output impedance: 50 Europe.
3. power: 100W (SSB CW AM FM), higher power can be customized.
4. standing wave: less than 1.5
5. interface: SL16-F (M)
6. insertion loss: less than 0.8db
7. frequency point: 21.400MHz (also customized according to user requirements).
8. 3dB bandwidth: 7.5MHz (the attenuation of 14.2700MHz is 23dB, the attenuation of 7.050MHz is 61db, the attenuation in 3.860MHz is 66db, the attenuation of 29.6MHz is 46db, the 50MHz attenuation is 46db).
A: This bandpass filter is suitable for mounting 2 or 2 or more short wave antennas in the same location while working at different frequencies. For example, when a game is played.
B: a higher isolation band pass filter (BPF) is suitable for 2 or more than 2 short wave radio stations to share a multi band short wave antenna and need to work at the same time.
General situation: when working in short wave radio, in order to reduce the electromagnetic interference from the surrounding, the bandpass filter can be accessed and the signal to noise ratio will be greatly improved.