Home |
Search |
Today's Posts |
#17
![]() |
|||
|
|||
![]()
An all software based receiver shoulnds like a neat idea until you
realize you run out of dynamic range by trying to sample such a wide bandwidth directly. In another reply to this thread, I mentioned commutating filters. At VLF, one of these ahead of a good ADC would probably also yield very good performance without downconverting to audio baseband first. As to speed of the ADC, using undersampling you theoretically only need enough speed to sample at twice the modulation (information) bandwidth. This is just a few kilohertz sampling rate. I've heard of this technique, but don't recall ever seeing it implemented in a real receiver design. Can anyone comment and shed more light on this?? Joe W3JDR |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Phone line as SW antenna [04-Apr-00] | Info | |||
Phone line as SW antenna [04-Apr-00] | Info | |||
Variations on the channel TRF AM tube tuner; and a question | Shortwave | |||
Phone line as SW antenna [04-Apr-00] | Shortwave | |||
Phone line as SW antenna [04-Apr-00] | Info |