Apparently, my last message on this got lost in the server somehwere.
I have uploaded two new photos to the N1RX folder that show the
difference between powering the SoftRock from the USB port vs using
a battery powered supply.
Both photos show the central noise spike from an SR-40 connected to
a dipole antenna. The only difference between the two photos are the
source of power. In the first, the SR-40 is powered by the USB port,
using the standard Q1 power conditioner. In the second, the SAME SR-
40 is now powered by a 78L05 voltage regulator, driven by a battery.
Notice the difference in the width of the central noise spike.
Better performance from the SR-40 can be obtained by running from a
power source OTHER than the USB port on the computer. Battery power
is best. For details on how to modify the SoftRock to use non-
computer power, see the other photos in the N1RX folder.
73,
Bruce N1RX
