I HIGHLY recommend that you do NOT put the amp at the rec port!
All the ambient noise will be amplified as well.? ?Dynamic range severely limited!
Any strong signals can now have enough power to damage the Nano input port.Most amps have more than enough IP3 level to take out the Nano.We are now depending on that 10-20 dB of coax loss to protect the Nano..
The best place to have the amp would be at the source antenna, but you don't lose?much if it is closer to the Nano.? ? ? ?Kent WA5VJB
PS? It is nice to see a discussion on the use of that little VNA.??? ? ? ?Seems most of the traffic is about changing the operating system.? i.e. software
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On Tuesday, July 20, 2021, 12:15:17 PM CDT, Donald S Brant Jr <dsbrantjr@...> wrote:
Kent:? Since you are making up for system losses, you could place the amplifier at the receive port as well, or anywhere in the system that it is convenient.? As long as you calibrate with the reference antennas (and the amplifier or receiver is not being saturated) the results will be the same.? It would increase the susceptibility to interference, though; bandpass filtering would be helpful in this case.
