Filters switching frequencies
Posted: Fri Jul 17, 2015 8:23 am
Hi
One of the things that decided my purchase was the nice documentation.
Some details are missing.
Am I right in assuming that 12 Mhz hardware frequency is the point where switching
from the 0/12Mhz filter to the 12/30Mhz one happens ?
This can be of importance :
Imagine you want to receive 11.9Mhz you can do it with a 11 Mhz VCO frequency
and a +0.9Mhz software offset or with a 13Mhz VCO and a -1.1Mhz offset.
In those 2 cases the filter used is different and ,depending on aerial and
propagation, results can be too.
May be adding a "filter in use" box to the GUI would be useful.
May be a manual override ,like in the SOFT66LC4 receiver ,too
One of the things that decided my purchase was the nice documentation.
Some details are missing.
Am I right in assuming that 12 Mhz hardware frequency is the point where switching
from the 0/12Mhz filter to the 12/30Mhz one happens ?
This can be of importance :
Imagine you want to receive 11.9Mhz you can do it with a 11 Mhz VCO frequency
and a +0.9Mhz software offset or with a 13Mhz VCO and a -1.1Mhz offset.
In those 2 cases the filter used is different and ,depending on aerial and
propagation, results can be too.
May be adding a "filter in use" box to the GUI would be useful.
May be a manual override ,like in the SOFT66LC4 receiver ,too