70 cm 432 MHz -0.06dB 2500 W Band-pass Filter

229,00 

70 cm 430 – 440 MHz 2.5 kW -0.06 dB Transmitting – Receiving Band-pass Filter with “7/16 DIN” connectors

 

With its extreme low insertion loss this filter could be used as transmitting and / or receiving filter in line with antenna.
– As transmitting to suppress any harmonics from 70 cm up to 2.5 kW linear amplifiers.
– On receive side before LNA to protect receive performance from any HF, FM 2 m, 220 MHz or 23 cm strong stations.

 
Filter is completely the same as 1 kW version except connectors (7/16 DIN – “N”).

 

Achieved results on a built Band pass filter:

Insertion loss (S21) [MHz] [dB]
1.8 MHz < -110 dB
3.8 MHz < -110 dB
7.1 MHz < -108 dB
14.15 MHz < -100 dB
21.4 MHz -92 dB
28.4 MHz -84 dB
50.1 MHz -69 dB
70.2 MHz -60 dB
88 MHz -54 dB
144 MHz -39 dB
146 MHz -39 dB
148 MHz -38 dB
220 MHz -24 dB
225 MHz -23 dB
430 MHz  -0.06 dB, Input RL batter than -34 dB
432.1 MHz -0.06 dB, Input RL batter than -34 dB
440 MHz -0.06 dB, Input RL batter than -34 dB
860 MHz -26 dB
864.2 MHz -26 dB
880 MHz -27 dB
1240 Mhz -64 dB
1296.1 MHz -48 dB
Maximum Power Input at SWR: [W]
1 : 1 2500 W
1 : 1.1.5 1600 W
1 : 2 1350 W
1 : 3 1150 W

 

 
Measured data on the assembled filter with HP8753ES network analyzer full 2-port calibrated:

70 cm Band-pass Filter 2500 W S11 and S21

432MHz-Bandpass-Filter-2500W-S11-S21-Measured-Data

 

70cm Bandpass Filter High Power 2500W HF Suppression:

70cm Bandpass Filter High Power 2500W HF Suppression

 

432MHz Bandpass Filter 2.5 kW: HF, 6m, FM Suppression:
70MHz Band-pass Filter 2500W 6m FM Suppression
 
432 MHz Band Pass Filter 2500 W: 2m and 1.25m Suppression:
70cm-432MHz-Bandpass-Filter-2500W-144MHz-222MHz-Suppression
 
430 – 440 MHz Band-pass Filter 2.5 kW Measured Data zoomed characteristics. Insertion Loss is set to 0.2 dB! Excellent Band Flatness and supper low loss of BPF!
70cm-Bandpass-Filter-2500W-S11-S21-Measured-Data-Zoomed
70cm Bandpass Filter 2500 W Harmonics Suppression:
70cm-Bandpass-Filter-1000W-Harmonics-Suppression

Additional information

Weight 1.00 kg