Cascading:
The only cascading filtering is first the xtal filter and then the DSP
filter. (So there's only one xtal filter)
400Hz-500Hz:
Yes listening to a wider DSP filter than Xtal filter is pointless.
Although (if configured correctly) the K3 will switch to a wider Xtal
filter (if there is one) if you widen up the DSP.
Analog demodulation:
Demodulation in the K3 is DSP. There is not menu setting to get around this.
73
Arie PA3A
Gee schreef op 24-6-2015 om 14:55:
Trying to sort this out.......
1) with any filter selected using the XFIL button on the K3, there is only ONE
crystal IF filter in the signal path. In other words, there is no cascading or
tail ending of the filters before and after the IF.
2) if I select a 400 Hz filter with the XFIL button then adjusting the DSP
WIDTH control to any WIDER than 500 Hz is pointless.
3) can the DSP be bypassed to produce a purely analog demodulated audio to the
speaker? As I recall years ago, some early DSP radios had this feature. I am
pretty sure the answer is no but still, had to ask.
It is interesting to note that there are new hams out there who have never
listened to an analog receiver before. It can be an eye opening experience!
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