![How do I find the right filter for my particular application and what is the difference between them? (part 3) How do I find the right filter for my particular application and what is the difference between them? (part 3)](https://qd-europe.com/fileadmin/_processed_/c/1/csm_129_fi_andover_1_700FS20_cd192c4023.jpg)
How do I find the right filter for my particular application and what is the difference between them? (part 3)
![Positive Train Control (PTC) Filter, Railroad RF Band Pass, 450 MHz to 460 MHz, Type N F/M, 100W CW, IP67 Positive Train Control (PTC) Filter, Railroad RF Band Pass, 450 MHz to 460 MHz, Type N F/M, 100W CW, IP67](https://www.polyphaser.com/Content/Images/Product/Large/RRF-450-NFM-L_500x500_View1.jpg)
Positive Train Control (PTC) Filter, Railroad RF Band Pass, 450 MHz to 460 MHz, Type N F/M, 100W CW, IP67
![6 Section Bandpass Filter With SMA Female Connectors Operating From 18.2 GHz to 19.2 GHz With a 1,000 MHz Passband 6 Section Bandpass Filter With SMA Female Connectors Operating From 18.2 GHz to 19.2 GHz With a 1,000 MHz Passband](https://www.pasternack.com/images/Product/large/PE87FL1009.jpg)
6 Section Bandpass Filter With SMA Female Connectors Operating From 18.2 GHz to 19.2 GHz With a 1,000 MHz Passband
![Tested filtering elements-light red bandpass filter BP635-27 and linear... | Download Scientific Diagram Tested filtering elements-light red bandpass filter BP635-27 and linear... | Download Scientific Diagram](https://www.researchgate.net/publication/341309717/figure/fig4/AS:890190520406025@1589249367824/Tested-filtering-elements-light-red-bandpass-filter-BP635-27-and-linear-polarizer_Q640.jpg)
Tested filtering elements-light red bandpass filter BP635-27 and linear... | Download Scientific Diagram
![5 Section Tunable Band Pass Filter With N Female Connectors Operating From 125 MHz to 250 MHz With a 5% Bandwidth 5 Section Tunable Band Pass Filter With N Female Connectors Operating From 125 MHz to 250 MHz With a 5% Bandwidth](https://www.pasternack.com/images/Product/large/PE8728.jpg)
5 Section Tunable Band Pass Filter With N Female Connectors Operating From 125 MHz to 250 MHz With a 5% Bandwidth
![Amazon.com: Optical Part For 650Nm Band-Pass Filter +/-30nm Red Light 4.6mm 10mm Through Barcode Engine 9mm (Diameter: 10mm 10mm 1mm) : Clothing, Shoes & Jewelry Amazon.com: Optical Part For 650Nm Band-Pass Filter +/-30nm Red Light 4.6mm 10mm Through Barcode Engine 9mm (Diameter: 10mm 10mm 1mm) : Clothing, Shoes & Jewelry](https://m.media-amazon.com/images/I/31otyELQW6L.jpg)