Bandpass UHF notch.

[m0lsx]

I have been looking around for a source of reasonably priced UHF bandpass (notch) filters.
This is not for an amateur radio band & it must be sharp (narrow) as it needs to both reject & prevent interference to others on frequencies very close by. So self building is out, as it's needs to be better quality than anything that I can put together with the test kit I have available.
Any ideas?

[G4RMT]

Something like this https://www.aliexpress.com/item/300-512MHz-With-resistance-filter-Notch-filter-Low-pass-notch-filter-high-pass-notch-filter-50W/32584249307.html?spm=2114.search0104.8.50.1a0947fczbmGoZ&transAbTest=ae803_5&priceBeautifyAB=0

They'll probably align it for you if you ask? Bit expensive though.

[m0lsx]

Something like this https://www.aliexpress.com/item/300-512MHz-With-resistance-filter-Notch-filter-Low-pass-notch-filter-high-pass-notch-filter-50W/32584249307.html?spm=2114.search0104.8.50.1a0947fczbmGoZ&transAbTest=ae803_5&priceBeautifyAB=0

They'll probably align it for you if you ask? Bit expensive though.

That is the sort of thing yes. Especially if it can be narrowed to under 1MHz, like that.
The filter it's self is only about £63 so not too bad, but £42 for postage
I am not sure if I am missing it or not, but there do not appear to be any supplying company details there. So yes something like that but from a safer source.

[G4RMT]

They're micro businesses - I buy loads of stuff from them and in about 8 years, I've spent thousands - microphones, moving lights, and radio stuff mainly. They use an escrow system, so as soon as it arrives, you click on the box and they get paid. I thought you mentioned a while back you've bought from AE before, but I may have dreamt that?

If time isn't an issue - ask them about cheaper ways of sending it. This seller has a decent feedback record and has been around 3 yrs+.