[R-390] r390a and SDR

[jm]

Hi fellows!

Taking advantage of the IF external connection of the receiver, I have been
using it with my SDR dongle. It is a Funcube pro+ and the  sdr software is
Gqrx running under linux. I have to thank my son the program settings and
his willingness to help me with the obscure world of linux.   The
combination of both new and old technology runs smoothly.

Obviously, the program is tuned to 455 kcs and the bandwith used in the 390
is its maximum capability,  16 kcs.

I am impressed by the technical level of the people in the list and hope
not to be an annoying beginner that makes silly questions.

In spite of the above, here are my questions:

1. I was surprised about the floor level in the sdr sofware. The floor is
-100 db which is very low, in my opinion, according to what I have read
about the 390. I don't aspire to have a receiver whith a 'galactic level'
as Mr. Rippel says, but this is far from expected. Does that level
correspond to the r390 or is it the sdr receiver level (funcube)?

2. I read somewhere that it is possible to feed the sdr receiver through
some point of the 390 with the result of obtaining a much widest bandwidht.
I remember that could be extended to 1 mhz. The current 16khz is
appropriate for amateurs chunks of bands but in broadcasting the reception
is limited to only one station.

Many thanks as always and happy Easter!

Jose
EA8DCP