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The best filtered pre-amp for 2 metres is this one from David G0MRF https://shop.amsat-uk.org/G0MRF_2m_Filt ... 28541.aspx
It was originally designed for an early SDR dongle that suffered badly from out of band overload.
detailed notes are here https://ukamsat.files.wordpress.com/201 ... _notes.pdf
It might not have the 55dB gain that Noel was talking about but it will be amplifying only the signals that you want!
On a related note, using other software for RX it crossed my mind that as SDRAngel does DVBS (video here https://www.youtube.com/watch?v=Bb8S_J9 ... Eu&index=2) and that my Pluto does 70MHz upwards I thought I'd give it a try.
Undoubtedly powerful but the GUI is very tricky for me, I could not get copy across the shack although the Pluto is clearly picking up something. I've had a quick download of Marks software but I can't select a device. So much to try, but good fun trying...
Dongles not that bad at all after all.
Onward to boxing and switching and making things a bit safer!!
Thanks to the people who work to make this possible with hardware and software
The DG8 pre-amp is available as a short kit from SDR-Kits
Any Mini-Circuits parts may require an EZ Samples application on their website to get them. FOC. It's been a while since I read the DG8 manual and I can't remember what's in it.