How to setup the SDR for maximum and close range? Impossible?

[abcd567]

Dual Receiver on Piaware SD Card image (Jessie)/RPi Model2

1. First step was to serialize the Dongles. Assigned serial number 00000000 to one Dongle (for dump1090-fa), and 00001001 to other Dongle (for ModeSDeco2).
   Put Stickers with their assigned Serial Numbers on both Dongles.

   How to Change Serial Number of Dongle - ADSB 1090 + UAT 978 Dongles Plugged Into Same Pi

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2. Downloaded modesdeco2_rpi2-3_20170127.tgz from ModeSDecoder2 site on Windows computer, then uploaded to DropBox

3. Plugged both Dongles in Pi and rebooted Pi

4. Started installation process

sudo mkdir msd2

#Downloaded file from DropBox to newly created directory msd2
sudo wget -O msd2/modesdeco2_rpi2-3_20170127.tgz  "https://www.dropbox.com/s/dwhvl5n8pud2urq/modesdeco2_rpi2-3_20170127.tgz?dl=1"    

#moved into directory where downloaded file is saved
cd msd2

#Unzipped downloaded file
sudo tar xvzf modesdeco2_rpi2-3_20170127.tgz

#Created a blank file
sudo nano msd2.sh

Copy-pasted following text into blank file msd2.sh
(replace XX.XXXX:YY.YYYY by your actual Latitude & Longitude)

/home/pi/msd2/modesdeco2 \
 --device-serial 1001 \
 --gain 49.6 \
 --freq-correction 62 \
 --location XX.XXXX:YY.YYYY \
 --web 8088 \
 --metric \

Saved File.

Made file msd2.sh executable

sudo chmod +x msd2.sh

To Automatically start ModeSDeco2 at boot/reboot:

Open file rc.local for editing
sudo nano /etc/rc.local

Add following line just above the last, single-worded line (i.e. above exit0)
/home/pi/msd2/msd2.sh &
Save (Ctrl+o) and close file (Ctrl+x)

Rebooted RPi
sudo reboot

Both the dump1090-fa and ModeSDeco2 started, each one using its designated Dongle. ModeSDeco2 will automatically start at Boot / Reboot.

Dump1090-fa Map

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ModeSDeco2 Map