I'll try this out after checking out the existing filter. The antenna would now be placed on the higher roof. The location would not be very easily accessible and possibly quite dangerous for vandals. It seems the vandal is an old lady.This LNA is proven and has 3 filters on board: https://rtl-sdr.com/new-product-rtl-sdr-blog-1090-mhz-ads-b-lna/
It's 27$ including shipping, with 3$ added for slightly better shipping.
I can put this between the power inserter Bias Tee and DVB-T.No matter if you use a filter in front of the LNA, i would highly recommend using one behind the LNA.
(no matter the type)
If you are confident you can solder the SAW filter to 2 connectors while keeping the losses acceptable, go ahead.
But at GHz frequencies such undertakings require knowledge about the subject.
What really affects the efficacy of SAW and Bandpass Filters? Not finding clear literature online comparing the two.
Anyway, whenever the components are gathered and I restart the new installations, I plan to use the following sequence:
First, I determine which antenna is the best. For this, I would be testing on the Pi powered by a power bank with a mobile hotspot - all on the roof with 1m of coax.
The PCB antenna would be easiest and everything can be housed in a PVC pipe. However, if the coax spider or the SO-239 spider works better, then mounting it on the roof may tough. Exposure to pollution, temperature, wind has already made the old coax spider look quite sad under a month.
When the first part is done, I'll be adding the filter(s) and re-testing. Finally, I'll rig up the LNA+ BiasT and the entire length of coax and bring the Pi back down to the apartment. Ultimately, I aim use a 230V AC to 12 V DC, 12-5V DC buck converter, and a 7Ah battery to build continuous power supply. I really wish I could borrow a VNA from somewhere.