[Skimmertalk] Difference of RP10 14 16

[Bob Wilson, N6TV]

On Tue, Jul 16, 2019 at 4:07 PM Lee Sawkins <ve7cc at shaw.ca> wrote:

> It's a trade off for me. Sensitivity on high bands with a 20 dB pre-amp or
> a few busted calls on lower bands.
>

Well, since the RP has two antenna inputs, one can assign the low band
slices to antenna input 1 (no preamp), and the high band slices to input 2
(with preamp).  If using one common antenna, use a splitter:

                                                   +------------> Input1
(Low Bands)
Antenna -> Front End Protector -> Passive Splitter +
                                                   +-> Pre-amp -> Input2
(High Bands)

A passive attenuator in the low band input could also achieve the same
result.

Antenna assignments for all 16 receiver slices are defined in
*sdr_receiver_hpsdr/start.sh*, and are independent, but not dynamic, so
this works best with no .ini file rotation in Aggregator.

73,
Bob, N6TV
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