Hans,

I was going to recommend the same RTL-SDR.com filters, with the caveat that you cannot transmit through them. This shouldn't be a problem if you are using an arrow (just be sure to not TX on the antenna it's connected to), though? (somebody can correct me if I am wrong). I will say that I researched band reject filters a while ago that can take significant power, and they are REALLY expensive (like $100 and up). I own one of these cheap RTL-SDR.com FM filters and it does work (although I've never used it for sat ops).

--Roy K3RLD

I doubt these can take more than a few Watts. I want something you can use for higher power. Thanks for the link, though.