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G0HZU_JMR · 3rd Mar 2021, 7:09 pm

In the worst case, it would be possible to remove and scrap the square directional filter section shown in 20210302_173808.jpg and make a copy as this looks to be a separate PCB. There isn't anything special there and it just has to have the right dimensions to suit the alternative PCB material Er and thickness. Make sure you never touch the other printed BPF sections though. This 2.05GHz BPF would be much harder to replicate.

3rd Mar 2021, 7:09 pm	#39
G0HZU_JMR Dekatron Join Date: Sep 2010 Location: Cheltenham, Gloucestershire, UK. Posts: 3,077	Re: Spectrum Analyser TR4172 In the worst case, it would be possible to remove and scrap the square directional filter section shown in 20210302_173808.jpg and make a copy as this looks to be a separate PCB. There isn't anything special there and it just has to have the right dimensions to suit the alternative PCB material Er and thickness. Make sure you never touch the other printed BPF sections though. This 2.05GHz BPF would be much harder to replicate. __________________ Regards, Jeremy G0HZU